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<!doctype html><html><head><meta charset="utf-8"></head><body><pre id="__testling_output"></pre><script>(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
(function (process){
var xws = require('xhr-write-stream');
var Stream = require('stream');
var inspect = require('object-inspect');
process.on = function () {};
var ws = xws('/__testling/sock');
ws.write(window.location.hash + '\n');
function createChannel (writeListen) {
var c = new Stream;
c.writable = true;
c.write = function (buf) {
if (writeListen) writeListen(buf);
return ws.write(String(buf));
};
c.destroy = function () {};
c.end = function (buf) {
c.emit('close');
};
return c;
}
var lastTestId = 0;
process.stdout = createChannel(function (buf) {
var m = /^(?:not )? ok (\d+)/.exec(String(buf));
if (m) lastTestId = m[1];
});
process.stderr = createChannel();
process.stdout.on('close', function () { ws.end() });
process.exit = function () { ws.end() };
var oldError = window.onerror;
window.onerror = function (err, url, lineNum) {
var type = err && err.name || 'Error';
process.stdout.write(
'not ok ' + (lastTestId + 1) + ' ' + type + ': '
+ (err && err.message || String(err))
+ (lineNum ? ' on line ' + lineNum : '')
+ '\n'
);
if (err && err.stack) {
var lines = String(err.stack).split('\n');
var xs = [];
for (var i = 0; i < lines.length; i++) {
xs.push(' ' + lines[i]);
}
process.stdout.write([
' ---',
' stack:',
xs.join('\n'),
' ...'
].join('\n') + '\n');
}
ws.end();
if (typeof oldError === 'function') {
return oldError.apply(this, arguments);
}
};
window.__testlingErrorHandler = onerror;
if (typeof console === 'undefined') {
console = {};
}
var params = (function () {
var unesc = typeof decodeURIComponent !== 'undefined'
? decodeURIComponent : unescape
;
var parts = (window.location.search || '').replace(/^\?/, '').split('&');
var opts = {};
for (var i = 0; i < parts.length; i++) {
var x = parts[i].split('=');
opts[unesc(x[0])] = unesc(x[1]);
}
return opts;
})();
var originalLog = console.log;
console.log = function (msg) {
var index = 1;
var args = arguments;
if (typeof msg === 'string') {
msg = msg.replace(/(^|[^%])%[sd]/g, function (_, s) {
return s + args[index++];
});
}
else msg = inspect(msg);
for (var i = index; i < args.length; i++) {
msg += ' ' + inspect(args[i]);
}
if (params.show === undefined || parseBoolean(params.show)) {
var elem = document.getElementById('__testling_output');
if (elem) {
var txt = document.createTextNode(msg + '\n');
elem.appendChild(txt);
}
}
process.stdout.write(msg + '\n');
if (typeof originalLog === 'function') {
return originalLog.apply(this, arguments);
}
else if (originalLog) return originalLog(arguments[0]);
};
window.__testlingConsole = console;
function parseBoolean (x) {
if (x === 'false' || x === '0') return false;
return true;
}
}).call(this,require("g5I+bs"))
},{"g5I+bs":13,"object-inspect":11,"stream":19,"xhr-write-stream":30}],2:[function(require,module,exports){
;(function () {
var object = typeof exports != 'undefined' ? exports : this; // #8: web workers
var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
function InvalidCharacterError(message) {
this.message = message;
}
InvalidCharacterError.prototype = new Error;
InvalidCharacterError.prototype.name = 'InvalidCharacterError';
// encoder
// [https://gist.github.com/999166] by [https://github.com/nignag]
object.btoa || (
object.btoa = function (input) {
for (
// initialize result and counter
var block, charCode, idx = 0, map = chars, output = '';
// if the next input index does not exist:
// change the mapping table to "="
// check if d has no fractional digits
input.charAt(idx | 0) || (map = '=', idx % 1);
// "8 - idx % 1 * 8" generates the sequence 2, 4, 6, 8
output += map.charAt(63 & block >> 8 - idx % 1 * 8)
) {
charCode = input.charCodeAt(idx += 3/4);
if (charCode > 0xFF) {
throw new InvalidCharacterError("'btoa' failed: The string to be encoded contains characters outside of the Latin1 range.");
}
block = block << 8 | charCode;
}
return output;
});
// decoder
// [https://gist.github.com/1020396] by [https://github.com/atk]
object.atob || (
object.atob = function (input) {
input = input.replace(/=+$/, '');
if (input.length % 4 == 1) {
throw new InvalidCharacterError("'atob' failed: The string to be decoded is not correctly encoded.");
}
for (
// initialize result and counters
var bc = 0, bs, buffer, idx = 0, output = '';
// get next character
buffer = input.charAt(idx++);
// character found in table? initialize bit storage and add its ascii value;
~buffer && (bs = bc % 4 ? bs * 64 + buffer : buffer,
// and if not first of each 4 characters,
// convert the first 8 bits to one ascii character
bc++ % 4) ? output += String.fromCharCode(255 & bs >> (-2 * bc & 6)) : 0
) {
// try to find character in table (0-63, not found => -1)
buffer = chars.indexOf(buffer);
}
return output;
});
}());
},{}],3:[function(require,module,exports){
/*!
* The buffer module from node.js, for the browser.
*
* @author Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
* @license MIT
*/
var base64 = require('base64-js')
var ieee754 = require('ieee754')
exports.Buffer = Buffer
exports.SlowBuffer = Buffer
exports.INSPECT_MAX_BYTES = 50
Buffer.poolSize = 8192
/**
* If `Buffer._useTypedArrays`:
* === true Use Uint8Array implementation (fastest)
* === false Use Object implementation (compatible down to IE6)
*/
Buffer._useTypedArrays = (function () {
// Detect if browser supports Typed Arrays. Supported browsers are IE 10+, Firefox 4+,
// Chrome 7+, Safari 5.1+, Opera 11.6+, iOS 4.2+. If the browser does not support adding
// properties to `Uint8Array` instances, then that's the same as no `Uint8Array` support
// because we need to be able to add all the node Buffer API methods. This is an issue
// in Firefox 4-29. Now fixed: https://bugzilla.mozilla.org/show_bug.cgi?id=695438
try {
var buf = new ArrayBuffer(0)
var arr = new Uint8Array(buf)
arr.foo = function () { return 42 }
return 42 === arr.foo() &&
typeof arr.subarray === 'function' // Chrome 9-10 lack `subarray`
} catch (e) {
return false
}
})()
/**
* Class: Buffer
* =============
*
* The Buffer constructor returns instances of `Uint8Array` that are augmented
* with function properties for all the node `Buffer` API functions. We use
* `Uint8Array` so that square bracket notation works as expected -- it returns
* a single octet.
*
* By augmenting the instances, we can avoid modifying the `Uint8Array`
* prototype.
*/
function Buffer (subject, encoding, noZero) {
if (!(this instanceof Buffer))
return new Buffer(subject, encoding, noZero)
var type = typeof subject
// Workaround: node's base64 implementation allows for non-padded strings
// while base64-js does not.
if (encoding === 'base64' && type === 'string') {
subject = stringtrim(subject)
while (subject.length % 4 !== 0) {
subject = subject + '='
}
}
// Find the length
var length
if (type === 'number')
length = coerce(subject)
else if (type === 'string')
length = Buffer.byteLength(subject, encoding)
else if (type === 'object')
length = coerce(subject.length) // assume that object is array-like
else
throw new Error('First argument needs to be a number, array or string.')
var buf
if (Buffer._useTypedArrays) {
// Preferred: Return an augmented `Uint8Array` instance for best performance
buf = Buffer._augment(new Uint8Array(length))
} else {
// Fallback: Return THIS instance of Buffer (created by `new`)
buf = this
buf.length = length
buf._isBuffer = true
}
var i
if (Buffer._useTypedArrays && typeof subject.byteLength === 'number') {
// Speed optimization -- use set if we're copying from a typed array
buf._set(subject)
} else if (isArrayish(subject)) {
// Treat array-ish objects as a byte array
for (i = 0; i < length; i++) {
if (Buffer.isBuffer(subject))
buf[i] = subject.readUInt8(i)
else
buf[i] = subject[i]
}
} else if (type === 'string') {
buf.write(subject, 0, encoding)
} else if (type === 'number' && !Buffer._useTypedArrays && !noZero) {
for (i = 0; i < length; i++) {
buf[i] = 0
}
}
return buf
}
// STATIC METHODS
// ==============
Buffer.isEncoding = function (encoding) {
switch (String(encoding).toLowerCase()) {
case 'hex':
case 'utf8':
case 'utf-8':
case 'ascii':
case 'binary':
case 'base64':
case 'raw':
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return true
default:
return false
}
}
Buffer.isBuffer = function (b) {
return !!(b !== null && b !== undefined && b._isBuffer)
}
Buffer.byteLength = function (str, encoding) {
var ret
str = str + ''
switch (encoding || 'utf8') {
case 'hex':
ret = str.length / 2
break
case 'utf8':
case 'utf-8':
ret = utf8ToBytes(str).length
break
case 'ascii':
case 'binary':
case 'raw':
ret = str.length
break
case 'base64':
ret = base64ToBytes(str).length
break
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
ret = str.length * 2
break
default:
throw new Error('Unknown encoding')
}
return ret
}
Buffer.concat = function (list, totalLength) {
assert(isArray(list), 'Usage: Buffer.concat(list, [totalLength])\n' +
'list should be an Array.')
if (list.length === 0) {
return new Buffer(0)
} else if (list.length === 1) {
return list[0]
}
var i
if (typeof totalLength !== 'number') {
totalLength = 0
for (i = 0; i < list.length; i++) {
totalLength += list[i].length
}
}
var buf = new Buffer(totalLength)
var pos = 0
for (i = 0; i < list.length; i++) {
var item = list[i]
item.copy(buf, pos)
pos += item.length
}
return buf
}
// BUFFER INSTANCE METHODS
// =======================
function _hexWrite (buf, string, offset, length) {
offset = Number(offset) || 0
var remaining = buf.length - offset
if (!length) {
length = remaining
} else {
length = Number(length)
if (length > remaining) {
length = remaining
}
}
// must be an even number of digits
var strLen = string.length
assert(strLen % 2 === 0, 'Invalid hex string')
if (length > strLen / 2) {
length = strLen / 2
}
for (var i = 0; i < length; i++) {
var byte = parseInt(string.substr(i * 2, 2), 16)
assert(!isNaN(byte), 'Invalid hex string')
buf[offset + i] = byte
}
Buffer._charsWritten = i * 2
return i
}
function _utf8Write (buf, string, offset, length) {
var charsWritten = Buffer._charsWritten =
blitBuffer(utf8ToBytes(string), buf, offset, length)
return charsWritten
}
function _asciiWrite (buf, string, offset, length) {
var charsWritten = Buffer._charsWritten =
blitBuffer(asciiToBytes(string), buf, offset, length)
return charsWritten
}
function _binaryWrite (buf, string, offset, length) {
return _asciiWrite(buf, string, offset, length)
}
function _base64Write (buf, string, offset, length) {
var charsWritten = Buffer._charsWritten =
blitBuffer(base64ToBytes(string), buf, offset, length)
return charsWritten
}
function _utf16leWrite (buf, string, offset, length) {
var charsWritten = Buffer._charsWritten =
blitBuffer(utf16leToBytes(string), buf, offset, length)
return charsWritten
}
Buffer.prototype.write = function (string, offset, length, encoding) {
// Support both (string, offset, length, encoding)
// and the legacy (string, encoding, offset, length)
if (isFinite(offset)) {
if (!isFinite(length)) {
encoding = length
length = undefined
}
} else { // legacy
var swap = encoding
encoding = offset
offset = length
length = swap
}
offset = Number(offset) || 0
var remaining = this.length - offset
if (!length) {
length = remaining
} else {
length = Number(length)
if (length > remaining) {
length = remaining
}
}
encoding = String(encoding || 'utf8').toLowerCase()
var ret
switch (encoding) {
case 'hex':
ret = _hexWrite(this, string, offset, length)
break
case 'utf8':
case 'utf-8':
ret = _utf8Write(this, string, offset, length)
break
case 'ascii':
ret = _asciiWrite(this, string, offset, length)
break
case 'binary':
ret = _binaryWrite(this, string, offset, length)
break
case 'base64':
ret = _base64Write(this, string, offset, length)
break
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
ret = _utf16leWrite(this, string, offset, length)
break
default:
throw new Error('Unknown encoding')
}
return ret
}
Buffer.prototype.toString = function (encoding, start, end) {
var self = this
encoding = String(encoding || 'utf8').toLowerCase()
start = Number(start) || 0
end = (end !== undefined)
? Number(end)
: end = self.length
// Fastpath empty strings
if (end === start)
return ''
var ret
switch (encoding) {
case 'hex':
ret = _hexSlice(self, start, end)
break
case 'utf8':
case 'utf-8':
ret = _utf8Slice(self, start, end)
break
case 'ascii':
ret = _asciiSlice(self, start, end)
break
case 'binary':
ret = _binarySlice(self, start, end)
break
case 'base64':
ret = _base64Slice(self, start, end)
break
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
ret = _utf16leSlice(self, start, end)
break
default:
throw new Error('Unknown encoding')
}
return ret
}
Buffer.prototype.toJSON = function () {
return {
type: 'Buffer',
data: Array.prototype.slice.call(this._arr || this, 0)
}
}
// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function (target, target_start, start, end) {
var source = this
if (!start) start = 0
if (!end && end !== 0) end = this.length
if (!target_start) target_start = 0
// Copy 0 bytes; we're done
if (end === start) return
if (target.length === 0 || source.length === 0) return
// Fatal error conditions
assert(end >= start, 'sourceEnd < sourceStart')
assert(target_start >= 0 && target_start < target.length,
'targetStart out of bounds')
assert(start >= 0 && start < source.length, 'sourceStart out of bounds')
assert(end >= 0 && end <= source.length, 'sourceEnd out of bounds')
// Are we oob?
if (end > this.length)
end = this.length
if (target.length - target_start < end - start)
end = target.length - target_start + start
var len = end - start
if (len < 100 || !Buffer._useTypedArrays) {
for (var i = 0; i < len; i++)
target[i + target_start] = this[i + start]
} else {
target._set(this.subarray(start, start + len), target_start)
}
}
function _base64Slice (buf, start, end) {
if (start === 0 && end === buf.length) {
return base64.fromByteArray(buf)
} else {
return base64.fromByteArray(buf.slice(start, end))
}
}
function _utf8Slice (buf, start, end) {
var res = ''
var tmp = ''
end = Math.min(buf.length, end)
for (var i = start; i < end; i++) {
if (buf[i] <= 0x7F) {
res += decodeUtf8Char(tmp) + String.fromCharCode(buf[i])
tmp = ''
} else {
tmp += '%' + buf[i].toString(16)
}
}
return res + decodeUtf8Char(tmp)
}
function _asciiSlice (buf, start, end) {
var ret = ''
end = Math.min(buf.length, end)
for (var i = start; i < end; i++)
ret += String.fromCharCode(buf[i])
return ret
}
function _binarySlice (buf, start, end) {
return _asciiSlice(buf, start, end)
}
function _hexSlice (buf, start, end) {
var len = buf.length
if (!start || start < 0) start = 0
if (!end || end < 0 || end > len) end = len
var out = ''
for (var i = start; i < end; i++) {
out += toHex(buf[i])
}
return out
}
function _utf16leSlice (buf, start, end) {
var bytes = buf.slice(start, end)
var res = ''
for (var i = 0; i < bytes.length; i += 2) {
res += String.fromCharCode(bytes[i] + bytes[i+1] * 256)
}
return res
}
Buffer.prototype.slice = function (start, end) {
var len = this.length
start = clamp(start, len, 0)
end = clamp(end, len, len)
if (Buffer._useTypedArrays) {
return Buffer._augment(this.subarray(start, end))
} else {
var sliceLen = end - start
var newBuf = new Buffer(sliceLen, undefined, true)
for (var i = 0; i < sliceLen; i++) {
newBuf[i] = this[i + start]
}
return newBuf
}
}
// `get` will be removed in Node 0.13+
Buffer.prototype.get = function (offset) {
console.log('.get() is deprecated. Access using array indexes instead.')
return this.readUInt8(offset)
}
// `set` will be removed in Node 0.13+
Buffer.prototype.set = function (v, offset) {
console.log('.set() is deprecated. Access using array indexes instead.')
return this.writeUInt8(v, offset)
}
Buffer.prototype.readUInt8 = function (offset, noAssert) {
if (!noAssert) {
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset < this.length, 'Trying to read beyond buffer length')
}
if (offset >= this.length)
return
return this[offset]
}
function _readUInt16 (buf, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 1 < buf.length, 'Trying to read beyond buffer length')
}
var len = buf.length
if (offset >= len)
return
var val
if (littleEndian) {
val = buf[offset]
if (offset + 1 < len)
val |= buf[offset + 1] << 8
} else {
val = buf[offset] << 8
if (offset + 1 < len)
val |= buf[offset + 1]
}
return val
}
Buffer.prototype.readUInt16LE = function (offset, noAssert) {
return _readUInt16(this, offset, true, noAssert)
}
Buffer.prototype.readUInt16BE = function (offset, noAssert) {
return _readUInt16(this, offset, false, noAssert)
}
function _readUInt32 (buf, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 3 < buf.length, 'Trying to read beyond buffer length')
}
var len = buf.length
if (offset >= len)
return
var val
if (littleEndian) {
if (offset + 2 < len)
val = buf[offset + 2] << 16
if (offset + 1 < len)
val |= buf[offset + 1] << 8
val |= buf[offset]
if (offset + 3 < len)
val = val + (buf[offset + 3] << 24 >>> 0)
} else {
if (offset + 1 < len)
val = buf[offset + 1] << 16
if (offset + 2 < len)
val |= buf[offset + 2] << 8
if (offset + 3 < len)
val |= buf[offset + 3]
val = val + (buf[offset] << 24 >>> 0)
}
return val
}
Buffer.prototype.readUInt32LE = function (offset, noAssert) {
return _readUInt32(this, offset, true, noAssert)
}
Buffer.prototype.readUInt32BE = function (offset, noAssert) {
return _readUInt32(this, offset, false, noAssert)
}
Buffer.prototype.readInt8 = function (offset, noAssert) {
if (!noAssert) {
assert(offset !== undefined && offset !== null,
'missing offset')
assert(offset < this.length, 'Trying to read beyond buffer length')
}
if (offset >= this.length)
return
var neg = this[offset] & 0x80
if (neg)
return (0xff - this[offset] + 1) * -1
else
return this[offset]
}
function _readInt16 (buf, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 1 < buf.length, 'Trying to read beyond buffer length')
}
var len = buf.length
if (offset >= len)
return
var val = _readUInt16(buf, offset, littleEndian, true)
var neg = val & 0x8000
if (neg)
return (0xffff - val + 1) * -1
else
return val
}
Buffer.prototype.readInt16LE = function (offset, noAssert) {
return _readInt16(this, offset, true, noAssert)
}
Buffer.prototype.readInt16BE = function (offset, noAssert) {
return _readInt16(this, offset, false, noAssert)
}
function _readInt32 (buf, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 3 < buf.length, 'Trying to read beyond buffer length')
}
var len = buf.length
if (offset >= len)
return
var val = _readUInt32(buf, offset, littleEndian, true)
var neg = val & 0x80000000
if (neg)
return (0xffffffff - val + 1) * -1
else
return val
}
Buffer.prototype.readInt32LE = function (offset, noAssert) {
return _readInt32(this, offset, true, noAssert)
}
Buffer.prototype.readInt32BE = function (offset, noAssert) {
return _readInt32(this, offset, false, noAssert)
}
function _readFloat (buf, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset + 3 < buf.length, 'Trying to read beyond buffer length')
}
return ieee754.read(buf, offset, littleEndian, 23, 4)
}
Buffer.prototype.readFloatLE = function (offset, noAssert) {
return _readFloat(this, offset, true, noAssert)
}
Buffer.prototype.readFloatBE = function (offset, noAssert) {
return _readFloat(this, offset, false, noAssert)
}
function _readDouble (buf, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset + 7 < buf.length, 'Trying to read beyond buffer length')
}
return ieee754.read(buf, offset, littleEndian, 52, 8)
}
Buffer.prototype.readDoubleLE = function (offset, noAssert) {
return _readDouble(this, offset, true, noAssert)
}
Buffer.prototype.readDoubleBE = function (offset, noAssert) {
return _readDouble(this, offset, false, noAssert)
}
Buffer.prototype.writeUInt8 = function (value, offset, noAssert) {
if (!noAssert) {
assert(value !== undefined && value !== null, 'missing value')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset < this.length, 'trying to write beyond buffer length')
verifuint(value, 0xff)
}
if (offset >= this.length) return
this[offset] = value
}
function _writeUInt16 (buf, value, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(value !== undefined && value !== null, 'missing value')
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 1 < buf.length, 'trying to write beyond buffer length')
verifuint(value, 0xffff)
}
var len = buf.length
if (offset >= len)
return
for (var i = 0, j = Math.min(len - offset, 2); i < j; i++) {
buf[offset + i] =
(value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
(littleEndian ? i : 1 - i) * 8
}
}
Buffer.prototype.writeUInt16LE = function (value, offset, noAssert) {
_writeUInt16(this, value, offset, true, noAssert)
}
Buffer.prototype.writeUInt16BE = function (value, offset, noAssert) {
_writeUInt16(this, value, offset, false, noAssert)
}
function _writeUInt32 (buf, value, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(value !== undefined && value !== null, 'missing value')
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 3 < buf.length, 'trying to write beyond buffer length')
verifuint(value, 0xffffffff)
}
var len = buf.length
if (offset >= len)
return
for (var i = 0, j = Math.min(len - offset, 4); i < j; i++) {
buf[offset + i] =
(value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
}
}
Buffer.prototype.writeUInt32LE = function (value, offset, noAssert) {
_writeUInt32(this, value, offset, true, noAssert)
}
Buffer.prototype.writeUInt32BE = function (value, offset, noAssert) {
_writeUInt32(this, value, offset, false, noAssert)
}
Buffer.prototype.writeInt8 = function (value, offset, noAssert) {
if (!noAssert) {
assert(value !== undefined && value !== null, 'missing value')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset < this.length, 'Trying to write beyond buffer length')
verifsint(value, 0x7f, -0x80)
}
if (offset >= this.length)
return
if (value >= 0)
this.writeUInt8(value, offset, noAssert)
else
this.writeUInt8(0xff + value + 1, offset, noAssert)
}
function _writeInt16 (buf, value, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(value !== undefined && value !== null, 'missing value')
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 1 < buf.length, 'Trying to write beyond buffer length')
verifsint(value, 0x7fff, -0x8000)
}
var len = buf.length
if (offset >= len)
return
if (value >= 0)
_writeUInt16(buf, value, offset, littleEndian, noAssert)
else
_writeUInt16(buf, 0xffff + value + 1, offset, littleEndian, noAssert)
}
Buffer.prototype.writeInt16LE = function (value, offset, noAssert) {
_writeInt16(this, value, offset, true, noAssert)
}
Buffer.prototype.writeInt16BE = function (value, offset, noAssert) {
_writeInt16(this, value, offset, false, noAssert)
}
function _writeInt32 (buf, value, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(value !== undefined && value !== null, 'missing value')
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 3 < buf.length, 'Trying to write beyond buffer length')
verifsint(value, 0x7fffffff, -0x80000000)
}
var len = buf.length
if (offset >= len)
return
if (value >= 0)
_writeUInt32(buf, value, offset, littleEndian, noAssert)
else
_writeUInt32(buf, 0xffffffff + value + 1, offset, littleEndian, noAssert)
}
Buffer.prototype.writeInt32LE = function (value, offset, noAssert) {
_writeInt32(this, value, offset, true, noAssert)
}
Buffer.prototype.writeInt32BE = function (value, offset, noAssert) {
_writeInt32(this, value, offset, false, noAssert)
}
function _writeFloat (buf, value, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(value !== undefined && value !== null, 'missing value')
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 3 < buf.length, 'Trying to write beyond buffer length')
verifIEEE754(value, 3.4028234663852886e+38, -3.4028234663852886e+38)
}
var len = buf.length
if (offset >= len)
return
ieee754.write(buf, value, offset, littleEndian, 23, 4)
}
Buffer.prototype.writeFloatLE = function (value, offset, noAssert) {
_writeFloat(this, value, offset, true, noAssert)
}
Buffer.prototype.writeFloatBE = function (value, offset, noAssert) {
_writeFloat(this, value, offset, false, noAssert)
}
function _writeDouble (buf, value, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(value !== undefined && value !== null, 'missing value')
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 7 < buf.length,
'Trying to write beyond buffer length')
verifIEEE754(value, 1.7976931348623157E+308, -1.7976931348623157E+308)
}
var len = buf.length
if (offset >= len)
return
ieee754.write(buf, value, offset, littleEndian, 52, 8)
}
Buffer.prototype.writeDoubleLE = function (value, offset, noAssert) {
_writeDouble(this, value, offset, true, noAssert)
}
Buffer.prototype.writeDoubleBE = function (value, offset, noAssert) {
_writeDouble(this, value, offset, false, noAssert)
}
// fill(value, start=0, end=buffer.length)
Buffer.prototype.fill = function (value, start, end) {
if (!value) value = 0
if (!start) start = 0
if (!end) end = this.length
if (typeof value === 'string') {
value = value.charCodeAt(0)
}
assert(typeof value === 'number' && !isNaN(value), 'value is not a number')
assert(end >= start, 'end < start')
// Fill 0 bytes; we're done
if (end === start) return
if (this.length === 0) return
assert(start >= 0 && start < this.length, 'start out of bounds')
assert(end >= 0 && end <= this.length, 'end out of bounds')
for (var i = start; i < end; i++) {
this[i] = value
}
}
Buffer.prototype.inspect = function () {
var out = []
var len = this.length
for (var i = 0; i < len; i++) {
out[i] = toHex(this[i])
if (i === exports.INSPECT_MAX_BYTES) {
out[i + 1] = '...'
break
}
}
return '<Buffer ' + out.join(' ') + '>'
}
/**
* Creates a new `ArrayBuffer` with the *copied* memory of the buffer instance.
* Added in Node 0.12. Only available in browsers that support ArrayBuffer.
*/
Buffer.prototype.toArrayBuffer = function () {
if (typeof Uint8Array !== 'undefined') {
if (Buffer._useTypedArrays) {
return (new Buffer(this)).buffer
} else {
var buf = new Uint8Array(this.length)
for (var i = 0, len = buf.length; i < len; i += 1)
buf[i] = this[i]
return buf.buffer
}
} else {
throw new Error('Buffer.toArrayBuffer not supported in this browser')
}
}
// HELPER FUNCTIONS
// ================
function stringtrim (str) {
if (str.trim) return str.trim()
return str.replace(/^\s+|\s+$/g, '')
}
var BP = Buffer.prototype
/**
* Augment a Uint8Array *instance* (not the Uint8Array class!) with Buffer methods
*/
Buffer._augment = function (arr) {
arr._isBuffer = true
// save reference to original Uint8Array get/set methods before overwriting
arr._get = arr.get
arr._set = arr.set
// deprecated, will be removed in node 0.13+
arr.get = BP.get
arr.set = BP.set
arr.write = BP.write
arr.toString = BP.toString
arr.toLocaleString = BP.toString
arr.toJSON = BP.toJSON
arr.copy = BP.copy
arr.slice = BP.slice
arr.readUInt8 = BP.readUInt8
arr.readUInt16LE = BP.readUInt16LE
arr.readUInt16BE = BP.readUInt16BE
arr.readUInt32LE = BP.readUInt32LE
arr.readUInt32BE = BP.readUInt32BE
arr.readInt8 = BP.readInt8
arr.readInt16LE = BP.readInt16LE
arr.readInt16BE = BP.readInt16BE
arr.readInt32LE = BP.readInt32LE
arr.readInt32BE = BP.readInt32BE
arr.readFloatLE = BP.readFloatLE
arr.readFloatBE = BP.readFloatBE
arr.readDoubleLE = BP.readDoubleLE
arr.readDoubleBE = BP.readDoubleBE
arr.writeUInt8 = BP.writeUInt8
arr.writeUInt16LE = BP.writeUInt16LE
arr.writeUInt16BE = BP.writeUInt16BE
arr.writeUInt32LE = BP.writeUInt32LE
arr.writeUInt32BE = BP.writeUInt32BE
arr.writeInt8 = BP.writeInt8
arr.writeInt16LE = BP.writeInt16LE
arr.writeInt16BE = BP.writeInt16BE
arr.writeInt32LE = BP.writeInt32LE
arr.writeInt32BE = BP.writeInt32BE
arr.writeFloatLE = BP.writeFloatLE
arr.writeFloatBE = BP.writeFloatBE
arr.writeDoubleLE = BP.writeDoubleLE
arr.writeDoubleBE = BP.writeDoubleBE
arr.fill = BP.fill
arr.inspect = BP.inspect
arr.toArrayBuffer = BP.toArrayBuffer
return arr
}
// slice(start, end)
function clamp (index, len, defaultValue) {
if (typeof index !== 'number') return defaultValue
index = ~~index; // Coerce to integer.
if (index >= len) return len
if (index >= 0) return index
index += len
if (index >= 0) return index
return 0
}
function coerce (length) {
// Coerce length to a number (possibly NaN), round up
// in case it's fractional (e.g. 123.456) then do a
// double negate to coerce a NaN to 0. Easy, right?
length = ~~Math.ceil(+length)
return length < 0 ? 0 : length
}
function isArray (subject) {
return (Array.isArray || function (subject) {
return Object.prototype.toString.call(subject) === '[object Array]'
})(subject)
}
function isArrayish (subject) {
return isArray(subject) || Buffer.isBuffer(subject) ||
subject && typeof subject === 'object' &&
typeof subject.length === 'number'
}
function toHex (n) {
if (n < 16) return '0' + n.toString(16)
return n.toString(16)
}
function utf8ToBytes (str) {
var byteArray = []
for (var i = 0; i < str.length; i++) {
var b = str.charCodeAt(i)
if (b <= 0x7F)
byteArray.push(str.charCodeAt(i))
else {
var start = i
if (b >= 0xD800 && b <= 0xDFFF) i++
var h = encodeURIComponent(str.slice(start, i+1)).substr(1).split('%')
for (var j = 0; j < h.length; j++)
byteArray.push(parseInt(h[j], 16))
}
}
return byteArray
}
function asciiToBytes (str) {
var byteArray = []
for (var i = 0; i < str.length; i++) {
// Node's code seems to be doing this and not & 0x7F..
byteArray.push(str.charCodeAt(i) & 0xFF)
}
return byteArray
}
function utf16leToBytes (str) {
var c, hi, lo
var byteArray = []
for (var i = 0; i < str.length; i++) {
c = str.charCodeAt(i)
hi = c >> 8
lo = c % 256
byteArray.push(lo)
byteArray.push(hi)
}
return byteArray
}
function base64ToBytes (str) {
return base64.toByteArray(str)
}
function blitBuffer (src, dst, offset, length) {
var pos
for (var i = 0; i < length; i++) {
if ((i + offset >= dst.length) || (i >= src.length))
break
dst[i + offset] = src[i]
}
return i
}
function decodeUtf8Char (str) {
try {
return decodeURIComponent(str)
} catch (err) {
return String.fromCharCode(0xFFFD) // UTF 8 invalid char
}
}
/*
* We have to make sure that the value is a valid integer. This means that it
* is non-negative. It has no fractional component and that it does not
* exceed the maximum allowed value.
*/
function verifuint (value, max) {
assert(typeof value === 'number', 'cannot write a non-number as a number')
assert(value >= 0, 'specified a negative value for writing an unsigned value')
assert(value <= max, 'value is larger than maximum value for type')
assert(Math.floor(value) === value, 'value has a fractional component')
}
function verifsint (value, max, min) {
assert(typeof value === 'number', 'cannot write a non-number as a number')
assert(value <= max, 'value larger than maximum allowed value')
assert(value >= min, 'value smaller than minimum allowed value')
assert(Math.floor(value) === value, 'value has a fractional component')
}
function verifIEEE754 (value, max, min) {
assert(typeof value === 'number', 'cannot write a non-number as a number')
assert(value <= max, 'value larger than maximum allowed value')
assert(value >= min, 'value smaller than minimum allowed value')
}
function assert (test, message) {
if (!test) throw new Error(message || 'Failed assertion')
}
},{"base64-js":4,"ieee754":9}],4:[function(require,module,exports){
var lookup = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
;(function (exports) {
'use strict';
var Arr = (typeof Uint8Array !== 'undefined')
? Uint8Array
: Array
var PLUS = '+'.charCodeAt(0)
var SLASH = '/'.charCodeAt(0)
var NUMBER = '0'.charCodeAt(0)
var LOWER = 'a'.charCodeAt(0)
var UPPER = 'A'.charCodeAt(0)
var PLUS_URL_SAFE = '-'.charCodeAt(0)
var SLASH_URL_SAFE = '_'.charCodeAt(0)
function decode (elt) {
var code = elt.charCodeAt(0)
if (code === PLUS ||
code === PLUS_URL_SAFE)
return 62 // '+'
if (code === SLASH ||
code === SLASH_URL_SAFE)
return 63 // '/'
if (code < NUMBER)
return -1 //no match
if (code < NUMBER + 10)
return code - NUMBER + 26 + 26
if (code < UPPER + 26)
return code - UPPER
if (code < LOWER + 26)
return code - LOWER + 26
}
function b64ToByteArray (b64) {
var i, j, l, tmp, placeHolders, arr
if (b64.length % 4 > 0) {
throw new Error('Invalid string. Length must be a multiple of 4')
}
// the number of equal signs (place holders)
// if there are two placeholders, than the two characters before it
// represent one byte
// if there is only one, then the three characters before it represent 2 bytes
// this is just a cheap hack to not do indexOf twice
var len = b64.length
placeHolders = '=' === b64.charAt(len - 2) ? 2 : '=' === b64.charAt(len - 1) ? 1 : 0
// base64 is 4/3 + up to two characters of the original data
arr = new Arr(b64.length * 3 / 4 - placeHolders)
// if there are placeholders, only get up to the last complete 4 chars
l = placeHolders > 0 ? b64.length - 4 : b64.length
var L = 0
function push (v) {
arr[L++] = v
}
for (i = 0, j = 0; i < l; i += 4, j += 3) {
tmp = (decode(b64.charAt(i)) << 18) | (decode(b64.charAt(i + 1)) << 12) | (decode(b64.charAt(i + 2)) << 6) | decode(b64.charAt(i + 3))
push((tmp & 0xFF0000) >> 16)
push((tmp & 0xFF00) >> 8)
push(tmp & 0xFF)
}
if (placeHolders === 2) {
tmp = (decode(b64.charAt(i)) << 2) | (decode(b64.charAt(i + 1)) >> 4)
push(tmp & 0xFF)
} else if (placeHolders === 1) {
tmp = (decode(b64.charAt(i)) << 10) | (decode(b64.charAt(i + 1)) << 4) | (decode(b64.charAt(i + 2)) >> 2)
push((tmp >> 8) & 0xFF)
push(tmp & 0xFF)
}
return arr
}
function uint8ToBase64 (uint8) {
var i,
extraBytes = uint8.length % 3, // if we have 1 byte left, pad 2 bytes
output = "",
temp, length
function encode (num) {
return lookup.charAt(num)
}
function tripletToBase64 (num) {
return encode(num >> 18 & 0x3F) + encode(num >> 12 & 0x3F) + encode(num >> 6 & 0x3F) + encode(num & 0x3F)
}
// go through the array every three bytes, we'll deal with trailing stuff later
for (i = 0, length = uint8.length - extraBytes; i < length; i += 3) {
temp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
output += tripletToBase64(temp)
}
// pad the end with zeros, but make sure to not forget the extra bytes
switch (extraBytes) {
case 1:
temp = uint8[uint8.length - 1]
output += encode(temp >> 2)
output += encode((temp << 4) & 0x3F)
output += '=='
break
case 2:
temp = (uint8[uint8.length - 2] << 8) + (uint8[uint8.length - 1])
output += encode(temp >> 10)
output += encode((temp >> 4) & 0x3F)
output += encode((temp << 2) & 0x3F)
output += '='
break
}
return output
}
exports.toByteArray = b64ToByteArray
exports.fromByteArray = uint8ToBase64
}(typeof exports === 'undefined' ? (this.base64js = {}) : exports))
},{}],5:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
function EventEmitter() {
this._events = this._events || {};
this._maxListeners = this._maxListeners || undefined;
}
module.exports = EventEmitter;
// Backwards-compat with node 0.10.x
EventEmitter.EventEmitter = EventEmitter;
EventEmitter.prototype._events = undefined;
EventEmitter.prototype._maxListeners = undefined;
// By default EventEmitters will print a warning if more than 10 listeners are
// added to it. This is a useful default which helps finding memory leaks.
EventEmitter.defaultMaxListeners = 10;
// Obviously not all Emitters should be limited to 10. This function allows
// that to be increased. Set to zero for unlimited.
EventEmitter.prototype.setMaxListeners = function(n) {
if (!isNumber(n) || n < 0 || isNaN(n))
throw TypeError('n must be a positive number');
this._maxListeners = n;
return this;
};
EventEmitter.prototype.emit = function(type) {
var er, handler, len, args, i, listeners;
if (!this._events)
this._events = {};
// If there is no 'error' event listener then throw.
if (type === 'error') {
if (!this._events.error ||
(isObject(this._events.error) && !this._events.error.length)) {
er = arguments[1];
if (er instanceof Error) {
throw er; // Unhandled 'error' event
}
throw TypeError('Uncaught, unspecified "error" event.');
}
}
handler = this._events[type];
if (isUndefined(handler))
return false;
if (isFunction(handler)) {
switch (arguments.length) {
// fast cases
case 1:
handler.call(this);
break;
case 2:
handler.call(this, arguments[1]);
break;
case 3:
handler.call(this, arguments[1], arguments[2]);
break;
// slower
default:
len = arguments.length;
args = new Array(len - 1);
for (i = 1; i < len; i++)
args[i - 1] = arguments[i];
handler.apply(this, args);
}
} else if (isObject(handler)) {
len = arguments.length;
args = new Array(len - 1);
for (i = 1; i < len; i++)
args[i - 1] = arguments[i];
listeners = handler.slice();
len = listeners.length;
for (i = 0; i < len; i++)
listeners[i].apply(this, args);
}
return true;
};
EventEmitter.prototype.addListener = function(type, listener) {
var m;
if (!isFunction(listener))
throw TypeError('listener must be a function');
if (!this._events)
this._events = {};
// To avoid recursion in the case that type === "newListener"! Before
// adding it to the listeners, first emit "newListener".
if (this._events.newListener)
this.emit('newListener', type,
isFunction(listener.listener) ?
listener.listener : listener);
if (!this._events[type])
// Optimize the case of one listener. Don't need the extra array object.
this._events[type] = listener;
else if (isObject(this._events[type]))
// If we've already got an array, just append.
this._events[type].push(listener);
else
// Adding the second element, need to change to array.
this._events[type] = [this._events[type], listener];
// Check for listener leak
if (isObject(this._events[type]) && !this._events[type].warned) {
var m;
if (!isUndefined(this._maxListeners)) {
m = this._maxListeners;
} else {
m = EventEmitter.defaultMaxListeners;
}
if (m && m > 0 && this._events[type].length > m) {
this._events[type].warned = true;
console.error('(node) warning: possible EventEmitter memory ' +
'leak detected. %d listeners added. ' +
'Use emitter.setMaxListeners() to increase limit.',
this._events[type].length);
if (typeof console.trace === 'function') {
// not supported in IE 10
console.trace();
}
}
}
return this;
};
EventEmitter.prototype.on = EventEmitter.prototype.addListener;
EventEmitter.prototype.once = function(type, listener) {
if (!isFunction(listener))
throw TypeError('listener must be a function');
var fired = false;
function g() {
this.removeListener(type, g);
if (!fired) {
fired = true;
listener.apply(this, arguments);
}
}
g.listener = listener;
this.on(type, g);
return this;
};
// emits a 'removeListener' event iff the listener was removed
EventEmitter.prototype.removeListener = function(type, listener) {
var list, position, length, i;
if (!isFunction(listener))
throw TypeError('listener must be a function');
if (!this._events || !this._events[type])
return this;
list = this._events[type];
length = list.length;
position = -1;
if (list === listener ||
(isFunction(list.listener) && list.listener === listener)) {
delete this._events[type];
if (this._events.removeListener)
this.emit('removeListener', type, listener);
} else if (isObject(list)) {
for (i = length; i-- > 0;) {
if (list[i] === listener ||
(list[i].listener && list[i].listener === listener)) {
position = i;
break;
}
}
if (position < 0)
return this;
if (list.length === 1) {
list.length = 0;
delete this._events[type];
} else {
list.splice(position, 1);
}
if (this._events.removeListener)
this.emit('removeListener', type, listener);
}
return this;
};
EventEmitter.prototype.removeAllListeners = function(type) {
var key, listeners;
if (!this._events)
return this;
// not listening for removeListener, no need to emit
if (!this._events.removeListener) {
if (arguments.length === 0)
this._events = {};
else if (this._events[type])
delete this._events[type];
return this;
}
// emit removeListener for all listeners on all events
if (arguments.length === 0) {
for (key in this._events) {
if (key === 'removeListener') continue;
this.removeAllListeners(key);
}
this.removeAllListeners('removeListener');
this._events = {};
return this;
}
listeners = this._events[type];
if (isFunction(listeners)) {
this.removeListener(type, listeners);
} else {
// LIFO order
while (listeners.length)
this.removeListener(type, listeners[listeners.length - 1]);
}
delete this._events[type];
return this;
};
EventEmitter.prototype.listeners = function(type) {
var ret;
if (!this._events || !this._events[type])
ret = [];
else if (isFunction(this._events[type]))
ret = [this._events[type]];
else
ret = this._events[type].slice();
return ret;
};
EventEmitter.listenerCount = function(emitter, type) {
var ret;
if (!emitter._events || !emitter._events[type])
ret = 0;
else if (isFunction(emitter._events[type]))
ret = 1;
else
ret = emitter._events[type].length;
return ret;
};
function isFunction(arg) {
return typeof arg === 'function';
}
function isNumber(arg) {
return typeof arg === 'number';
}
function isObject(arg) {
return typeof arg === 'object' && arg !== null;
}
function isUndefined(arg) {
return arg === void 0;
}
},{}],6:[function(require,module,exports){
var http = module.exports;
var EventEmitter = require('events').EventEmitter;
var Request = require('./lib/request');
var url = require('url')
http.request = function (params, cb) {
if (typeof params === 'string') {
params = url.parse(params)
}
if (!params) params = {};
if (!params.host && !params.port) {
params.port = parseInt(window.location.port, 10);
}
if (!params.host && params.hostname) {
params.host = params.hostname;
}
if (!params.scheme) params.scheme = window.location.protocol.split(':')[0];
if (!params.host) {
params.host = window.location.hostname || window.location.host;
}
if (/:/.test(params.host)) {
if (!params.port) {
params.port = params.host.split(':')[1];
}
params.host = params.host.split(':')[0];
}
if (!params.port) params.port = params.scheme == 'https' ? 443 : 80;
var req = new Request(new xhrHttp, params);
if (cb) req.on('response', cb);
return req;
};
http.get = function (params, cb) {
params.method = 'GET';
var req = http.request(params, cb);
req.end();
return req;
};
http.Agent = function () {};
http.Agent.defaultMaxSockets = 4;
var xhrHttp = (function () {
if (typeof window === 'undefined') {
throw new Error('no window object present');
}
else if (window.XMLHttpRequest) {
return window.XMLHttpRequest;
}
else if (window.ActiveXObject) {
var axs = [
'Msxml2.XMLHTTP.6.0',
'Msxml2.XMLHTTP.3.0',
'Microsoft.XMLHTTP'
];
for (var i = 0; i < axs.length; i++) {
try {
var ax = new(window.ActiveXObject)(axs[i]);
return function () {
if (ax) {
var ax_ = ax;
ax = null;
return ax_;
}
else {
return new(window.ActiveXObject)(axs[i]);
}
};
}
catch (e) {}
}
throw new Error('ajax not supported in this browser')
}
else {
throw new Error('ajax not supported in this browser');
}
})();
http.STATUS_CODES = {
100 : 'Continue',
101 : 'Switching Protocols',
102 : 'Processing', // RFC 2518, obsoleted by RFC 4918
200 : 'OK',
201 : 'Created',
202 : 'Accepted',
203 : 'Non-Authoritative Information',
204 : 'No Content',
205 : 'Reset Content',
206 : 'Partial Content',
207 : 'Multi-Status', // RFC 4918
300 : 'Multiple Choices',
301 : 'Moved Permanently',
302 : 'Moved Temporarily',
303 : 'See Other',
304 : 'Not Modified',
305 : 'Use Proxy',
307 : 'Temporary Redirect',
400 : 'Bad Request',
401 : 'Unauthorized',
402 : 'Payment Required',
403 : 'Forbidden',
404 : 'Not Found',
405 : 'Method Not Allowed',
406 : 'Not Acceptable',
407 : 'Proxy Authentication Required',
408 : 'Request Time-out',
409 : 'Conflict',
410 : 'Gone',
411 : 'Length Required',
412 : 'Precondition Failed',
413 : 'Request Entity Too Large',
414 : 'Request-URI Too Large',
415 : 'Unsupported Media Type',
416 : 'Requested Range Not Satisfiable',
417 : 'Expectation Failed',
418 : 'I\'m a teapot', // RFC 2324
422 : 'Unprocessable Entity', // RFC 4918
423 : 'Locked', // RFC 4918
424 : 'Failed Dependency', // RFC 4918
425 : 'Unordered Collection', // RFC 4918
426 : 'Upgrade Required', // RFC 2817
428 : 'Precondition Required', // RFC 6585
429 : 'Too Many Requests', // RFC 6585
431 : 'Request Header Fields Too Large',// RFC 6585
500 : 'Internal Server Error',
501 : 'Not Implemented',
502 : 'Bad Gateway',
503 : 'Service Unavailable',
504 : 'Gateway Time-out',
505 : 'HTTP Version Not Supported',
506 : 'Variant Also Negotiates', // RFC 2295
507 : 'Insufficient Storage', // RFC 4918
509 : 'Bandwidth Limit Exceeded',
510 : 'Not Extended', // RFC 2774
511 : 'Network Authentication Required' // RFC 6585
};
},{"./lib/request":7,"events":5,"url":26}],7:[function(require,module,exports){
var Stream = require('stream');
var Response = require('./response');
var Base64 = require('Base64');
var inherits = require('inherits');
var Request = module.exports = function (xhr, params) {
var self = this;
self.writable = true;
self.xhr = xhr;
self.body = [];
self.uri = (params.scheme || 'http') + '://'
+ params.host
+ (params.port ? ':' + params.port : '')
+ (params.path || '/')
;
if (typeof params.withCredentials === 'undefined') {
params.withCredentials = true;
}
try { xhr.withCredentials = params.withCredentials }
catch (e) {}
xhr.open(
params.method || 'GET',
self.uri,
true
);
self._headers = {};
if (params.headers) {
var keys = objectKeys(params.headers);
for (var i = 0; i < keys.length; i++) {
var key = keys[i];
if (!self.isSafeRequestHeader(key)) continue;
var value = params.headers[key];
self.setHeader(key, value);
}
}
if (params.auth) {
//basic auth
this.setHeader('Authorization', 'Basic ' + Base64.btoa(params.auth));
}
var res = new Response;
res.on('close', function () {
self.emit('close');
});
res.on('ready', function () {
self.emit('response', res);
});
xhr.onreadystatechange = function () {
// Fix for IE9 bug
// SCRIPT575: Could not complete the operation due to error c00c023f
// It happens when a request is aborted, calling the success callback anyway with readyState === 4
if (xhr.__aborted) return;
res.handle(xhr);
};
};
inherits(Request, Stream);
Request.prototype.setHeader = function (key, value) {
this._headers[key.toLowerCase()] = value
};
Request.prototype.getHeader = function (key) {
return this._headers[key.toLowerCase()]
};
Request.prototype.removeHeader = function (key) {
delete this._headers[key.toLowerCase()]
};
Request.prototype.write = function (s) {
this.body.push(s);
};
Request.prototype.destroy = function (s) {
this.xhr.__aborted = true;
this.xhr.abort();
this.emit('close');
};
Request.prototype.end = function (s) {
if (s !== undefined) this.body.push(s);
var keys = objectKeys(this._headers);
for (var i = 0; i < keys.length; i++) {
var key = keys[i];
var value = this._headers[key];
if (isArray(value)) {
for (var j = 0; j < value.length; j++) {
this.xhr.setRequestHeader(key, value[j]);
}
}
else this.xhr.setRequestHeader(key, value)
}
if (this.body.length === 0) {
this.xhr.send('');
}
else if (typeof this.body[0] === 'string') {
this.xhr.send(this.body.join(''));
}
else if (isArray(this.body[0])) {
var body = [];
for (var i = 0; i < this.body.length; i++) {
body.push.apply(body, this.body[i]);
}
this.xhr.send(body);
}
else if (/Array/.test(Object.prototype.toString.call(this.body[0]))) {
var len = 0;
for (var i = 0; i < this.body.length; i++) {
len += this.body[i].length;
}
var body = new(this.body[0].constructor)(len);
var k = 0;
for (var i = 0; i < this.body.length; i++) {
var b = this.body[i];
for (var j = 0; j < b.length; j++) {
body[k++] = b[j];
}
}
this.xhr.send(body);
}
else {
var body = '';
for (var i = 0; i < this.body.length; i++) {
body += this.body[i].toString();
}
this.xhr.send(body);
}
};
// Taken from http://dxr.mozilla.org/mozilla/mozilla-central/content/base/src/nsXMLHttpRequest.cpp.html
Request.unsafeHeaders = [
"accept-charset",
"accept-encoding",
"access-control-request-headers",
"access-control-request-method",
"connection",
"content-length",
"cookie",
"cookie2",
"content-transfer-encoding",
"date",
"expect",
"host",
"keep-alive",
"origin",
"referer",
"te",
"trailer",
"transfer-encoding",
"upgrade",
"user-agent",
"via"
];
Request.prototype.isSafeRequestHeader = function (headerName) {
if (!headerName) return false;
return indexOf(Request.unsafeHeaders, headerName.toLowerCase()) === -1;
};
var objectKeys = Object.keys || function (obj) {
var keys = [];
for (var key in obj) keys.push(key);
return keys;
};
var isArray = Array.isArray || function (xs) {
return Object.prototype.toString.call(xs) === '[object Array]';
};
var indexOf = function (xs, x) {
if (xs.indexOf) return xs.indexOf(x);
for (var i = 0; i < xs.length; i++) {
if (xs[i] === x) return i;
}
return -1;
};
},{"./response":8,"Base64":2,"inherits":10,"stream":19}],8:[function(require,module,exports){
var Stream = require('stream');
var util = require('util');
var Response = module.exports = function (res) {
this.offset = 0;
this.readable = true;
};
util.inherits(Response, Stream);
var capable = {
streaming : true,
status2 : true
};
function parseHeaders (res) {
var lines = res.getAllResponseHeaders().split(/\r?\n/);
var headers = {};
for (var i = 0; i < lines.length; i++) {
var line = lines[i];
if (line === '') continue;
var m = line.match(/^([^:]+):\s*(.*)/);
if (m) {
var key = m[1].toLowerCase(), value = m[2];
if (headers[key] !== undefined) {
if (isArray(headers[key])) {
headers[key].push(value);
}
else {
headers[key] = [ headers[key], value ];
}
}
else {
headers[key] = value;
}
}
else {
headers[line] = true;
}
}
return headers;
}
Response.prototype.getResponse = function (xhr) {
var respType = String(xhr.responseType).toLowerCase();
if (respType === 'blob') return xhr.responseBlob || xhr.response;
if (respType === 'arraybuffer') return xhr.response;
return xhr.responseText;
}
Response.prototype.getHeader = function (key) {
return this.headers[key.toLowerCase()];
};
Response.prototype.handle = function (res) {
if (res.readyState === 2 && capable.status2) {
try {
this.statusCode = res.status;
this.headers = parseHeaders(res);
}
catch (err) {
capable.status2 = false;
}
if (capable.status2) {
this.emit('ready');
}
}
else if (capable.streaming && res.readyState === 3) {
try {
if (!this.statusCode) {
this.statusCode = res.status;
this.headers = parseHeaders(res);
this.emit('ready');
}
}
catch (err) {}
try {
this._emitData(res);
}
catch (err) {
capable.streaming = false;
}
}
else if (res.readyState === 4) {
if (!this.statusCode) {
this.statusCode = res.status;
this.emit('ready');
}
this._emitData(res);
if (res.error) {
this.emit('error', this.getResponse(res));
}
else this.emit('end');
this.emit('close');
}
};
Response.prototype._emitData = function (res) {
var respBody = this.getResponse(res);
if (respBody.toString().match(/ArrayBuffer/)) {
this.emit('data', new Uint8Array(respBody, this.offset));
this.offset = respBody.byteLength;
return;
}
if (respBody.length > this.offset) {
this.emit('data', respBody.slice(this.offset));
this.offset = respBody.length;
}
};
var isArray = Array.isArray || function (xs) {
return Object.prototype.toString.call(xs) === '[object Array]';
};
},{"stream":19,"util":29}],9:[function(require,module,exports){
exports.read = function (buffer, offset, isLE, mLen, nBytes) {
var e, m
var eLen = (nBytes * 8) - mLen - 1
var eMax = (1 << eLen) - 1
var eBias = eMax >> 1
var nBits = -7
var i = isLE ? (nBytes - 1) : 0
var d = isLE ? -1 : 1
var s = buffer[offset + i]
i += d
e = s & ((1 << (-nBits)) - 1)
s >>= (-nBits)
nBits += eLen
for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}
m = e & ((1 << (-nBits)) - 1)
e >>= (-nBits)
nBits += mLen
for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}
if (e === 0) {
e = 1 - eBias
} else if (e === eMax) {
return m ? NaN : ((s ? -1 : 1) * Infinity)
} else {
m = m + Math.pow(2, mLen)
e = e - eBias
}
return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
}
exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
var e, m, c
var eLen = (nBytes * 8) - mLen - 1
var eMax = (1 << eLen) - 1
var eBias = eMax >> 1
var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
var i = isLE ? 0 : (nBytes - 1)
var d = isLE ? 1 : -1
var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
value = Math.abs(value)
if (isNaN(value) || value === Infinity) {
m = isNaN(value) ? 1 : 0
e = eMax
} else {
e = Math.floor(Math.log(value) / Math.LN2)
if (value * (c = Math.pow(2, -e)) < 1) {
e--
c *= 2
}
if (e + eBias >= 1) {
value += rt / c
} else {
value += rt * Math.pow(2, 1 - eBias)
}
if (value * c >= 2) {
e++
c /= 2
}
if (e + eBias >= eMax) {
m = 0
e = eMax
} else if (e + eBias >= 1) {
m = ((value * c) - 1) * Math.pow(2, mLen)
e = e + eBias
} else {
m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
e = 0
}
}
for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
e = (e << mLen) | m
eLen += mLen
for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
buffer[offset + i - d] |= s * 128
}
},{}],10:[function(require,module,exports){
if (typeof Object.create === 'function') {
// implementation from standard node.js 'util' module
module.exports = function inherits(ctor, superCtor) {
if (superCtor) {
ctor.super_ = superCtor
ctor.prototype = Object.create(superCtor.prototype, {
constructor: {
value: ctor,
enumerable: false,
writable: true,
configurable: true
}
})
}
};
} else {
// old school shim for old browsers
module.exports = function inherits(ctor, superCtor) {
if (superCtor) {
ctor.super_ = superCtor
var TempCtor = function () {}
TempCtor.prototype = superCtor.prototype
ctor.prototype = new TempCtor()
ctor.prototype.constructor = ctor
}
}
}
},{}],11:[function(require,module,exports){
var hasMap = typeof Map === 'function' && Map.prototype;
var mapSizeDescriptor = Object.getOwnPropertyDescriptor && hasMap ? Object.getOwnPropertyDescriptor(Map.prototype, 'size') : null;
var mapSize = hasMap && mapSizeDescriptor && typeof mapSizeDescriptor.get === 'function' ? mapSizeDescriptor.get : null;
var mapForEach = hasMap && Map.prototype.forEach;
var hasSet = typeof Set === 'function' && Set.prototype;
var setSizeDescriptor = Object.getOwnPropertyDescriptor && hasSet ? Object.getOwnPropertyDescriptor(Set.prototype, 'size') : null;
var setSize = hasSet && setSizeDescriptor && typeof setSizeDescriptor.get === 'function' ? setSizeDescriptor.get : null;
var setForEach = hasSet && Set.prototype.forEach;
var hasWeakMap = typeof WeakMap === 'function' && WeakMap.prototype;
var weakMapHas = hasWeakMap ? WeakMap.prototype.has : null;
var hasWeakSet = typeof WeakSet === 'function' && WeakSet.prototype;
var weakSetHas = hasWeakSet ? WeakSet.prototype.has : null;
var booleanValueOf = Boolean.prototype.valueOf;
var objectToString = Object.prototype.toString;
var match = String.prototype.match;
var bigIntValueOf = typeof BigInt === 'function' ? BigInt.prototype.valueOf : null;
var inspectCustom = require('./util.inspect').custom;
var inspectSymbol = inspectCustom && isSymbol(inspectCustom) ? inspectCustom : null;
module.exports = function inspect_(obj, options, depth, seen) {
var opts = options || {};
if (has(opts, 'quoteStyle') && (opts.quoteStyle !== 'single' && opts.quoteStyle !== 'double')) {
throw new TypeError('option "quoteStyle" must be "single" or "double"');
}
if (typeof obj === 'undefined') {
return 'undefined';
}
if (obj === null) {
return 'null';
}
if (typeof obj === 'boolean') {
return obj ? 'true' : 'false';
}
if (typeof obj === 'string') {
return inspectString(obj, opts);
}
if (typeof obj === 'number') {
if (obj === 0) {
return Infinity / obj > 0 ? '0' : '-0';
}
return String(obj);
}
if (typeof obj === 'bigint') { // eslint-disable-line valid-typeof
return String(obj) + 'n';
}
var maxDepth = typeof opts.depth === 'undefined' ? 5 : opts.depth;
if (typeof depth === 'undefined') { depth = 0; }
if (depth >= maxDepth && maxDepth > 0 && typeof obj === 'object') {
return '[Object]';
}
if (typeof seen === 'undefined') {
seen = [];
} else if (indexOf(seen, obj) >= 0) {
return '[Circular]';
}
function inspect(value, from) {
if (from) {
seen = seen.slice();
seen.push(from);
}
return inspect_(value, opts, depth + 1, seen);
}
if (typeof obj === 'function') {
var name = nameOf(obj);
return '[Function' + (name ? ': ' + name : '') + ']';
}
if (isSymbol(obj)) {
var symString = Symbol.prototype.toString.call(obj);
return typeof obj === 'object' ? markBoxed(symString) : symString;
}
if (isElement(obj)) {
var s = '<' + String(obj.nodeName).toLowerCase();
var attrs = obj.attributes || [];
for (var i = 0; i < attrs.length; i++) {
s += ' ' + attrs[i].name + '=' + wrapQuotes(quote(attrs[i].value), 'double', opts);
}
s += '>';
if (obj.childNodes && obj.childNodes.length) { s += '...'; }
s += '</' + String(obj.nodeName).toLowerCase() + '>';
return s;
}
if (isArray(obj)) {
if (obj.length === 0) { return '[]'; }
return '[ ' + arrObjKeys(obj, inspect).join(', ') + ' ]';
}
if (isError(obj)) {
var parts = arrObjKeys(obj, inspect);
if (parts.length === 0) { return '[' + String(obj) + ']'; }
return '{ [' + String(obj) + '] ' + parts.join(', ') + ' }';
}
if (typeof obj === 'object') {
if (inspectSymbol && typeof obj[inspectSymbol] === 'function') {
return obj[inspectSymbol]();
} else if (typeof obj.inspect === 'function') {
return obj.inspect();
}
}
if (isMap(obj)) {
var mapParts = [];
mapForEach.call(obj, function (value, key) {
mapParts.push(inspect(key, obj) + ' => ' + inspect(value, obj));
});
return collectionOf('Map', mapSize.call(obj), mapParts);
}
if (isSet(obj)) {
var setParts = [];
setForEach.call(obj, function (value) {
setParts.push(inspect(value, obj));
});
return collectionOf('Set', setSize.call(obj), setParts);
}
if (isWeakMap(obj)) {
return weakCollectionOf('WeakMap');
}
if (isWeakSet(obj)) {
return weakCollectionOf('WeakSet');
}
if (isNumber(obj)) {
return markBoxed(inspect(Number(obj)));
}
if (isBigInt(obj)) {
return markBoxed(inspect(bigIntValueOf.call(obj)));
}
if (isBoolean(obj)) {
return markBoxed(booleanValueOf.call(obj));
}
if (isString(obj)) {
return markBoxed(inspect(String(obj)));
}
if (!isDate(obj) && !isRegExp(obj)) {
var xs = arrObjKeys(obj, inspect);
if (xs.length === 0) { return '{}'; }
return '{ ' + xs.join(', ') + ' }';
}
return String(obj);
};
function wrapQuotes(s, defaultStyle, opts) {
var quoteChar = (opts.quoteStyle || defaultStyle) === 'double' ? '"' : "'";
return quoteChar + s + quoteChar;
}
function quote(s) {
return String(s).replace(/"/g, '&quot;');
}
function isArray(obj) { return toStr(obj) === '[object Array]'; }
function isDate(obj) { return toStr(obj) === '[object Date]'; }
function isRegExp(obj) { return toStr(obj) === '[object RegExp]'; }
function isError(obj) { return toStr(obj) === '[object Error]'; }
function isSymbol(obj) { return toStr(obj) === '[object Symbol]'; }
function isString(obj) { return toStr(obj) === '[object String]'; }
function isNumber(obj) { return toStr(obj) === '[object Number]'; }
function isBigInt(obj) { return toStr(obj) === '[object BigInt]'; }
function isBoolean(obj) { return toStr(obj) === '[object Boolean]'; }
var hasOwn = Object.prototype.hasOwnProperty || function (key) { return key in this; };
function has(obj, key) {
return hasOwn.call(obj, key);
}
function toStr(obj) {
return objectToString.call(obj);
}
function nameOf(f) {
if (f.name) { return f.name; }
var m = match.call(f, /^function\s*([\w$]+)/);
if (m) { return m[1]; }
return null;
}
function indexOf(xs, x) {
if (xs.indexOf) { return xs.indexOf(x); }
for (var i = 0, l = xs.length; i < l; i++) {
if (xs[i] === x) { return i; }
}
return -1;
}
function isMap(x) {
if (!mapSize || !x || typeof x !== 'object') {
return false;
}
try {
mapSize.call(x);
try {
setSize.call(x);
} catch (s) {
return true;
}
return x instanceof Map; // core-js workaround, pre-v2.5.0
} catch (e) {}
return false;
}
function isWeakMap(x) {
if (!weakMapHas || !x || typeof x !== 'object') {
return false;
}
try {
weakMapHas.call(x, weakMapHas);
try {
weakSetHas.call(x, weakSetHas);
} catch (s) {
return true;
}
return x instanceof WeakMap; // core-js workaround, pre-v2.5.0
} catch (e) {}
return false;
}
function isSet(x) {
if (!setSize || !x || typeof x !== 'object') {
return false;
}
try {
setSize.call(x);
try {
mapSize.call(x);
} catch (m) {
return true;
}
return x instanceof Set; // core-js workaround, pre-v2.5.0
} catch (e) {}
return false;
}
function isWeakSet(x) {
if (!weakSetHas || !x || typeof x !== 'object') {
return false;
}
try {
weakSetHas.call(x, weakSetHas);
try {
weakMapHas.call(x, weakMapHas);
} catch (s) {
return true;
}
return x instanceof WeakSet; // core-js workaround, pre-v2.5.0
} catch (e) {}
return false;
}
function isElement(x) {
if (!x || typeof x !== 'object') { return false; }
if (typeof HTMLElement !== 'undefined' && x instanceof HTMLElement) {
return true;
}
return typeof x.nodeName === 'string' && typeof x.getAttribute === 'function';
}
function inspectString(str, opts) {
// eslint-disable-next-line no-control-regex
var s = str.replace(/(['\\])/g, '\\$1').replace(/[\x00-\x1f]/g, lowbyte);
return wrapQuotes(s, 'single', opts);
}
function lowbyte(c) {
var n = c.charCodeAt(0);
var x = {
8: 'b', 9: 't', 10: 'n', 12: 'f', 13: 'r'
}[n];
if (x) { return '\\' + x; }
return '\\x' + (n < 0x10 ? '0' : '') + n.toString(16);
}
function markBoxed(str) {
return 'Object(' + str + ')';
}
function weakCollectionOf(type) {
return type + ' { ? }';
}
function collectionOf(type, size, entries) {
return type + ' (' + size + ') {' + entries.join(', ') + '}';
}
function arrObjKeys(obj, inspect) {
var isArr = isArray(obj);
var xs = [];
if (isArr) {
xs.length = obj.length;
for (var i = 0; i < obj.length; i++) {
xs[i] = has(obj, i) ? inspect(obj[i], obj) : '';
}
}
for (var key in obj) { // eslint-disable-line no-restricted-syntax
if (!has(obj, key)) { continue; } // eslint-disable-line no-restricted-syntax, no-continue
if (isArr && String(Number(key)) === key && key < obj.length) { continue; } // eslint-disable-line no-restricted-syntax, no-continue
if ((/[^\w$]/).test(key)) {
xs.push(inspect(key, obj) + ': ' + inspect(obj[key], obj));
} else {
xs.push(key + ': ' + inspect(obj[key], obj));
}
}
return xs;
}
},{"./util.inspect":12}],12:[function(require,module,exports){
module.exports = require('util').inspect;
},{"util":29}],13:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};
process.nextTick = (function () {
var canSetImmediate = typeof window !== 'undefined'
&& window.setImmediate;
var canPost = typeof window !== 'undefined'
&& window.postMessage && window.addEventListener
;
if (canSetImmediate) {
return function (f) { return window.setImmediate(f) };
}
if (canPost) {
var queue = [];
window.addEventListener('message', function (ev) {
var source = ev.source;
if ((source === window || source === null) && ev.data === 'process-tick') {
ev.stopPropagation();
if (queue.length > 0) {
var fn = queue.shift();
fn();
}
}
}, true);
return function nextTick(fn) {
queue.push(fn);
window.postMessage('process-tick', '*');
};
}
return function nextTick(fn) {
setTimeout(fn, 0);
};
})();
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
function noop() {}
process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.binding = function (name) {
throw new Error('process.binding is not supported');
}
// TODO(shtylman)
process.cwd = function () { return '/' };
process.chdir = function (dir) {
throw new Error('process.chdir is not supported');
};
},{}],14:[function(require,module,exports){
(function (global){
/*! http://mths.be/punycode v1.2.4 by @mathias */
;(function(root) {
/** Detect free variables */
var freeExports = typeof exports == 'object' && exports;
var freeModule = typeof module == 'object' && module &&
module.exports == freeExports && module;
var freeGlobal = typeof global == 'object' && global;
if (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal) {
root = freeGlobal;
}
/**
* The `punycode` object.
* @name punycode
* @type Object
*/
var punycode,
/** Highest positive signed 32-bit float value */
maxInt = 2147483647, // aka. 0x7FFFFFFF or 2^31-1
/** Bootstring parameters */
base = 36,
tMin = 1,
tMax = 26,
skew = 38,
damp = 700,
initialBias = 72,
initialN = 128, // 0x80
delimiter = '-', // '\x2D'
/** Regular expressions */
regexPunycode = /^xn--/,
regexNonASCII = /[^ -~]/, // unprintable ASCII chars + non-ASCII chars
regexSeparators = /\x2E|\u3002|\uFF0E|\uFF61/g, // RFC 3490 separators
/** Error messages */
errors = {
'overflow': 'Overflow: input needs wider integers to process',
'not-basic': 'Illegal input >= 0x80 (not a basic code point)',
'invalid-input': 'Invalid input'
},
/** Convenience shortcuts */
baseMinusTMin = base - tMin,
floor = Math.floor,
stringFromCharCode = String.fromCharCode,
/** Temporary variable */
key;
/*--------------------------------------------------------------------------*/
/**
* A generic error utility function.
* @private
* @param {String} type The error type.
* @returns {Error} Throws a `RangeError` with the applicable error message.
*/
function error(type) {
throw RangeError(errors[type]);
}
/**
* A generic `Array#map` utility function.
* @private
* @param {Array} array The array to iterate over.
* @param {Function} callback The function that gets called for every array
* item.
* @returns {Array} A new array of values returned by the callback function.
*/
function map(array, fn) {
var length = array.length;
while (length--) {
array[length] = fn(array[length]);
}
return array;
}
/**
* A simple `Array#map`-like wrapper to work with domain name strings.
* @private
* @param {String} domain The domain name.
* @param {Function} callback The function that gets called for every
* character.
* @returns {Array} A new string of characters returned by the callback
* function.
*/
function mapDomain(string, fn) {
return map(string.split(regexSeparators), fn).join('.');
}
/**
* Creates an array containing the numeric code points of each Unicode
* character in the string. While JavaScript uses UCS-2 internally,
* this function will convert a pair of surrogate halves (each of which
* UCS-2 exposes as separate characters) into a single code point,
* matching UTF-16.
* @see `punycode.ucs2.encode`
* @see <http://mathiasbynens.be/notes/javascript-encoding>
* @memberOf punycode.ucs2
* @name decode
* @param {String} string The Unicode input string (UCS-2).
* @returns {Array} The new array of code points.
*/
function ucs2decode(string) {
var output = [],
counter = 0,
length = string.length,
value,
extra;
while (counter < length) {
value = string.charCodeAt(counter++);
if (value >= 0xD800 && value <= 0xDBFF && counter < length) {
// high surrogate, and there is a next character
extra = string.charCodeAt(counter++);
if ((extra & 0xFC00) == 0xDC00) { // low surrogate
output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);
} else {
// unmatched surrogate; only append this code unit, in case the next
// code unit is the high surrogate of a surrogate pair
output.push(value);
counter--;
}
} else {
output.push(value);
}
}
return output;
}
/**
* Creates a string based on an array of numeric code points.
* @see `punycode.ucs2.decode`
* @memberOf punycode.ucs2
* @name encode
* @param {Array} codePoints The array of numeric code points.
* @returns {String} The new Unicode string (UCS-2).
*/
function ucs2encode(array) {
return map(array, function(value) {
var output = '';
if (value > 0xFFFF) {
value -= 0x10000;
output += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800);
value = 0xDC00 | value & 0x3FF;
}
output += stringFromCharCode(value);
return output;
}).join('');
}
/**
* Converts a basic code point into a digit/integer.
* @see `digitToBasic()`
* @private
* @param {Number} codePoint The basic numeric code point value.
* @returns {Number} The numeric value of a basic code point (for use in
* representing integers) in the range `0` to `base - 1`, or `base` if
* the code point does not represent a value.
*/
function basicToDigit(codePoint) {
if (codePoint - 48 < 10) {
return codePoint - 22;
}
if (codePoint - 65 < 26) {
return codePoint - 65;
}
if (codePoint - 97 < 26) {
return codePoint - 97;
}
return base;
}
/**
* Converts a digit/integer into a basic code point.
* @see `basicToDigit()`
* @private
* @param {Number} digit The numeric value of a basic code point.
* @returns {Number} The basic code point whose value (when used for
* representing integers) is `digit`, which needs to be in the range
* `0` to `base - 1`. If `flag` is non-zero, the uppercase form is
* used; else, the lowercase form is used. The behavior is undefined
* if `flag` is non-zero and `digit` has no uppercase form.
*/
function digitToBasic(digit, flag) {
// 0..25 map to ASCII a..z or A..Z
// 26..35 map to ASCII 0..9
return digit + 22 + 75 * (digit < 26) - ((flag != 0) << 5);
}
/**
* Bias adaptation function as per section 3.4 of RFC 3492.
* http://tools.ietf.org/html/rfc3492#section-3.4
* @private
*/
function adapt(delta, numPoints, firstTime) {
var k = 0;
delta = firstTime ? floor(delta / damp) : delta >> 1;
delta += floor(delta / numPoints);
for (/* no initialization */; delta > baseMinusTMin * tMax >> 1; k += base) {
delta = floor(delta / baseMinusTMin);
}
return floor(k + (baseMinusTMin + 1) * delta / (delta + skew));
}
/**
* Converts a Punycode string of ASCII-only symbols to a string of Unicode
* symbols.
* @memberOf punycode
* @param {String} input The Punycode string of ASCII-only symbols.
* @returns {String} The resulting string of Unicode symbols.
*/
function decode(input) {
// Don't use UCS-2
var output = [],
inputLength = input.length,
out,
i = 0,
n = initialN,
bias = initialBias,
basic,
j,
index,
oldi,
w,
k,
digit,
t,
/** Cached calculation results */
baseMinusT;
// Handle the basic code points: let `basic` be the number of input code
// points before the last delimiter, or `0` if there is none, then copy
// the first basic code points to the output.
basic = input.lastIndexOf(delimiter);
if (basic < 0) {
basic = 0;
}
for (j = 0; j < basic; ++j) {
// if it's not a basic code point
if (input.charCodeAt(j) >= 0x80) {
error('not-basic');
}
output.push(input.charCodeAt(j));
}
// Main decoding loop: start just after the last delimiter if any basic code
// points were copied; start at the beginning otherwise.
for (index = basic > 0 ? basic + 1 : 0; index < inputLength; /* no final expression */) {
// `index` is the index of the next character to be consumed.
// Decode a generalized variable-length integer into `delta`,
// which gets added to `i`. The overflow checking is easier
// if we increase `i` as we go, then subtract off its starting
// value at the end to obtain `delta`.
for (oldi = i, w = 1, k = base; /* no condition */; k += base) {
if (index >= inputLength) {
error('invalid-input');
}
digit = basicToDigit(input.charCodeAt(index++));
if (digit >= base || digit > floor((maxInt - i) / w)) {
error('overflow');
}
i += digit * w;
t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);
if (digit < t) {
break;
}
baseMinusT = base - t;
if (w > floor(maxInt / baseMinusT)) {
error('overflow');
}
w *= baseMinusT;
}
out = output.length + 1;
bias = adapt(i - oldi, out, oldi == 0);
// `i` was supposed to wrap around from `out` to `0`,
// incrementing `n` each time, so we'll fix that now:
if (floor(i / out) > maxInt - n) {
error('overflow');
}
n += floor(i / out);
i %= out;
// Insert `n` at position `i` of the output
output.splice(i++, 0, n);
}
return ucs2encode(output);
}
/**
* Converts a string of Unicode symbols to a Punycode string of ASCII-only
* symbols.
* @memberOf punycode
* @param {String} input The string of Unicode symbols.
* @returns {String} The resulting Punycode string of ASCII-only symbols.
*/
function encode(input) {
var n,
delta,
handledCPCount,
basicLength,
bias,
j,
m,
q,
k,
t,
currentValue,
output = [],
/** `inputLength` will hold the number of code points in `input`. */
inputLength,
/** Cached calculation results */
handledCPCountPlusOne,
baseMinusT,
qMinusT;
// Convert the input in UCS-2 to Unicode
input = ucs2decode(input);
// Cache the length
inputLength = input.length;
// Initialize the state
n = initialN;
delta = 0;
bias = initialBias;
// Handle the basic code points
for (j = 0; j < inputLength; ++j) {
currentValue = input[j];
if (currentValue < 0x80) {
output.push(stringFromCharCode(currentValue));
}
}
handledCPCount = basicLength = output.length;
// `handledCPCount` is the number of code points that have been handled;
// `basicLength` is the number of basic code points.
// Finish the basic string - if it is not empty - with a delimiter
if (basicLength) {
output.push(delimiter);
}
// Main encoding loop:
while (handledCPCount < inputLength) {
// All non-basic code points < n have been handled already. Find the next
// larger one:
for (m = maxInt, j = 0; j < inputLength; ++j) {
currentValue = input[j];
if (currentValue >= n && currentValue < m) {
m = currentValue;
}
}
// Increase `delta` enough to advance the decoder's <n,i> state to <m,0>,
// but guard against overflow
handledCPCountPlusOne = handledCPCount + 1;
if (m - n > floor((maxInt - delta) / handledCPCountPlusOne)) {
error('overflow');
}
delta += (m - n) * handledCPCountPlusOne;
n = m;
for (j = 0; j < inputLength; ++j) {
currentValue = input[j];
if (currentValue < n && ++delta > maxInt) {
error('overflow');
}
if (currentValue == n) {
// Represent delta as a generalized variable-length integer
for (q = delta, k = base; /* no condition */; k += base) {
t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);
if (q < t) {
break;
}
qMinusT = q - t;
baseMinusT = base - t;
output.push(
stringFromCharCode(digitToBasic(t + qMinusT % baseMinusT, 0))
);
q = floor(qMinusT / baseMinusT);
}
output.push(stringFromCharCode(digitToBasic(q, 0)));
bias = adapt(delta, handledCPCountPlusOne, handledCPCount == basicLength);
delta = 0;
++handledCPCount;
}
}
++delta;
++n;
}
return output.join('');
}
/**
* Converts a Punycode string representing a domain name to Unicode. Only the
* Punycoded parts of the domain name will be converted, i.e. it doesn't
* matter if you call it on a string that has already been converted to
* Unicode.
* @memberOf punycode
* @param {String} domain The Punycode domain name to convert to Unicode.
* @returns {String} The Unicode representation of the given Punycode
* string.
*/
function toUnicode(domain) {
return mapDomain(domain, function(string) {
return regexPunycode.test(string)
? decode(string.slice(4).toLowerCase())
: string;
});
}
/**
* Converts a Unicode string representing a domain name to Punycode. Only the
* non-ASCII parts of the domain name will be converted, i.e. it doesn't
* matter if you call it with a domain that's already in ASCII.
* @memberOf punycode
* @param {String} domain The domain name to convert, as a Unicode string.
* @returns {String} The Punycode representation of the given domain name.
*/
function toASCII(domain) {
return mapDomain(domain, function(string) {
return regexNonASCII.test(string)
? 'xn--' + encode(string)
: string;
});
}
/*--------------------------------------------------------------------------*/
/** Define the public API */
punycode = {
/**
* A string representing the current Punycode.js version number.
* @memberOf punycode
* @type String
*/
'version': '1.2.4',
/**
* An object of methods to convert from JavaScript's internal character
* representation (UCS-2) to Unicode code points, and back.
* @see <http://mathiasbynens.be/notes/javascript-encoding>
* @memberOf punycode
* @type Object
*/
'ucs2': {
'decode': ucs2decode,
'encode': ucs2encode
},
'decode': decode,
'encode': encode,
'toASCII': toASCII,
'toUnicode': toUnicode
};
/** Expose `punycode` */
// Some AMD build optimizers, like r.js, check for specific condition patterns
// like the following:
if (
typeof define == 'function' &&
typeof define.amd == 'object' &&
define.amd
) {
define('punycode', function() {
return punycode;
});
} else if (freeExports && !freeExports.nodeType) {
if (freeModule) { // in Node.js or RingoJS v0.8.0+
freeModule.exports = punycode;
} else { // in Narwhal or RingoJS v0.7.0-
for (key in punycode) {
punycode.hasOwnProperty(key) && (freeExports[key] = punycode[key]);
}
}
} else { // in Rhino or a web browser
root.punycode = punycode;
}
}(this));
}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],15:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
// If obj.hasOwnProperty has been overridden, then calling
// obj.hasOwnProperty(prop) will break.
// See: https://github.com/joyent/node/issues/1707
function hasOwnProperty(obj, prop) {
return Object.prototype.hasOwnProperty.call(obj, prop);
}
module.exports = function(qs, sep, eq, options) {
sep = sep || '&';
eq = eq || '=';
var obj = {};
if (typeof qs !== 'string' || qs.length === 0) {
return obj;
}
var regexp = /\+/g;
qs = qs.split(sep);
var maxKeys = 1000;
if (options && typeof options.maxKeys === 'number') {
maxKeys = options.maxKeys;
}
var len = qs.length;
// maxKeys <= 0 means that we should not limit keys count
if (maxKeys > 0 && len > maxKeys) {
len = maxKeys;
}
for (var i = 0; i < len; ++i) {
var x = qs[i].replace(regexp, '%20'),
idx = x.indexOf(eq),
kstr, vstr, k, v;
if (idx >= 0) {
kstr = x.substr(0, idx);
vstr = x.substr(idx + 1);
} else {
kstr = x;
vstr = '';
}
k = decodeURIComponent(kstr);
v = decodeURIComponent(vstr);
if (!hasOwnProperty(obj, k)) {
obj[k] = v;
} else if (isArray(obj[k])) {
obj[k].push(v);
} else {
obj[k] = [obj[k], v];
}
}
return obj;
};
var isArray = Array.isArray || function (xs) {
return Object.prototype.toString.call(xs) === '[object Array]';
};
},{}],16:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
var stringifyPrimitive = function(v) {
switch (typeof v) {
case 'string':
return v;
case 'boolean':
return v ? 'true' : 'false';
case 'number':
return isFinite(v) ? v : '';
default:
return '';
}
};
module.exports = function(obj, sep, eq, name) {
sep = sep || '&';
eq = eq || '=';
if (obj === null) {
obj = undefined;
}
if (typeof obj === 'object') {
return map(objectKeys(obj), function(k) {
var ks = encodeURIComponent(stringifyPrimitive(k)) + eq;
if (isArray(obj[k])) {
return obj[k].map(function(v) {
return ks + encodeURIComponent(stringifyPrimitive(v));
}).join(sep);
} else {
return ks + encodeURIComponent(stringifyPrimitive(obj[k]));
}
}).join(sep);
}
if (!name) return '';
return encodeURIComponent(stringifyPrimitive(name)) + eq +
encodeURIComponent(stringifyPrimitive(obj));
};
var isArray = Array.isArray || function (xs) {
return Object.prototype.toString.call(xs) === '[object Array]';
};
function map (xs, f) {
if (xs.map) return xs.map(f);
var res = [];
for (var i = 0; i < xs.length; i++) {
res.push(f(xs[i], i));
}
return res;
}
var objectKeys = Object.keys || function (obj) {
var res = [];
for (var key in obj) {
if (Object.prototype.hasOwnProperty.call(obj, key)) res.push(key);
}
return res;
};
},{}],17:[function(require,module,exports){
'use strict';
exports.decode = exports.parse = require('./decode');
exports.encode = exports.stringify = require('./encode');
},{"./decode":15,"./encode":16}],18:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a duplex stream is just a stream that is both readable and writable.
// Since JS doesn't have multiple prototypal inheritance, this class
// prototypally inherits from Readable, and then parasitically from
// Writable.
module.exports = Duplex;
var inherits = require('inherits');
var setImmediate = require('process/browser.js').nextTick;
var Readable = require('./readable.js');
var Writable = require('./writable.js');
inherits(Duplex, Readable);
Duplex.prototype.write = Writable.prototype.write;
Duplex.prototype.end = Writable.prototype.end;
Duplex.prototype._write = Writable.prototype._write;
function Duplex(options) {
if (!(this instanceof Duplex))
return new Duplex(options);
Readable.call(this, options);
Writable.call(this, options);
if (options && options.readable === false)
this.readable = false;
if (options && options.writable === false)
this.writable = false;
this.allowHalfOpen = true;
if (options && options.allowHalfOpen === false)
this.allowHalfOpen = false;
this.once('end', onend);
}
// the no-half-open enforcer
function onend() {
// if we allow half-open state, or if the writable side ended,
// then we're ok.
if (this.allowHalfOpen || this._writableState.ended)
return;
// no more data can be written.
// But allow more writes to happen in this tick.
var self = this;
setImmediate(function () {
self.end();
});
}
},{"./readable.js":22,"./writable.js":24,"inherits":10,"process/browser.js":20}],19:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
module.exports = Stream;
var EE = require('events').EventEmitter;
var inherits = require('inherits');
inherits(Stream, EE);
Stream.Readable = require('./readable.js');
Stream.Writable = require('./writable.js');
Stream.Duplex = require('./duplex.js');
Stream.Transform = require('./transform.js');
Stream.PassThrough = require('./passthrough.js');
// Backwards-compat with node 0.4.x
Stream.Stream = Stream;
// old-style streams. Note that the pipe method (the only relevant
// part of this class) is overridden in the Readable class.
function Stream() {
EE.call(this);
}
Stream.prototype.pipe = function(dest, options) {
var source = this;
function ondata(chunk) {
if (dest.writable) {
if (false === dest.write(chunk) && source.pause) {
source.pause();
}
}
}
source.on('data', ondata);
function ondrain() {
if (source.readable && source.resume) {
source.resume();
}
}
dest.on('drain', ondrain);
// If the 'end' option is not supplied, dest.end() will be called when
// source gets the 'end' or 'close' events. Only dest.end() once.
if (!dest._isStdio && (!options || options.end !== false)) {
source.on('end', onend);
source.on('close', onclose);
}
var didOnEnd = false;
function onend() {
if (didOnEnd) return;
didOnEnd = true;
dest.end();
}
function onclose() {
if (didOnEnd) return;
didOnEnd = true;
if (typeof dest.destroy === 'function') dest.destroy();
}
// don't leave dangling pipes when there are errors.
function onerror(er) {
cleanup();
if (EE.listenerCount(this, 'error') === 0) {
throw er; // Unhandled stream error in pipe.
}
}
source.on('error', onerror);
dest.on('error', onerror);
// remove all the event listeners that were added.
function cleanup() {
source.removeListener('data', ondata);
dest.removeListener('drain', ondrain);
source.removeListener('end', onend);
source.removeListener('close', onclose);
source.removeListener('error', onerror);
dest.removeListener('error', onerror);
source.removeListener('end', cleanup);
source.removeListener('close', cleanup);
dest.removeListener('close', cleanup);
}
source.on('end', cleanup);
source.on('close', cleanup);
dest.on('close', cleanup);
dest.emit('pipe', source);
// Allow for unix-like usage: A.pipe(B).pipe(C)
return dest;
};
},{"./duplex.js":18,"./passthrough.js":21,"./readable.js":22,"./transform.js":23,"./writable.js":24,"events":5,"inherits":10}],20:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};
process.nextTick = (function () {
var canSetImmediate = typeof window !== 'undefined'
&& window.setImmediate;
var canPost = typeof window !== 'undefined'
&& window.postMessage && window.addEventListener
;
if (canSetImmediate) {
return function (f) { return window.setImmediate(f) };
}
if (canPost) {
var queue = [];
window.addEventListener('message', function (ev) {
var source = ev.source;
if ((source === window || source === null) && ev.data === 'process-tick') {
ev.stopPropagation();
if (queue.length > 0) {
var fn = queue.shift();
fn();
}
}
}, true);
return function nextTick(fn) {
queue.push(fn);
window.postMessage('process-tick', '*');
};
}
return function nextTick(fn) {
setTimeout(fn, 0);
};
})();
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.binding = function (name) {
throw new Error('process.binding is not supported');
}
// TODO(shtylman)
process.cwd = function () { return '/' };
process.chdir = function (dir) {
throw new Error('process.chdir is not supported');
};
},{}],21:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a passthrough stream.
// basically just the most minimal sort of Transform stream.
// Every written chunk gets output as-is.
module.exports = PassThrough;
var Transform = require('./transform.js');
var inherits = require('inherits');
inherits(PassThrough, Transform);
function PassThrough(options) {
if (!(this instanceof PassThrough))
return new PassThrough(options);
Transform.call(this, options);
}
PassThrough.prototype._transform = function(chunk, encoding, cb) {
cb(null, chunk);
};
},{"./transform.js":23,"inherits":10}],22:[function(require,module,exports){
(function (process){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
module.exports = Readable;
Readable.ReadableState = ReadableState;
var EE = require('events').EventEmitter;
var Stream = require('./index.js');
var Buffer = require('buffer').Buffer;
var setImmediate = require('process/browser.js').nextTick;
var StringDecoder;
var inherits = require('inherits');
inherits(Readable, Stream);
function ReadableState(options, stream) {
options = options || {};
// the point at which it stops calling _read() to fill the buffer
// Note: 0 is a valid value, means "don't call _read preemptively ever"
var hwm = options.highWaterMark;
this.highWaterMark = (hwm || hwm === 0) ? hwm : 16 * 1024;
// cast to ints.
this.highWaterMark = ~~this.highWaterMark;
this.buffer = [];
this.length = 0;
this.pipes = null;
this.pipesCount = 0;
this.flowing = false;
this.ended = false;
this.endEmitted = false;
this.reading = false;
// In streams that never have any data, and do push(null) right away,
// the consumer can miss the 'end' event if they do some I/O before
// consuming the stream. So, we don't emit('end') until some reading
// happens.
this.calledRead = false;
// a flag to be able to tell if the onwrite cb is called immediately,
// or on a later tick. We set this to true at first, becuase any
// actions that shouldn't happen until "later" should generally also
// not happen before the first write call.
this.sync = true;
// whenever we return null, then we set a flag to say
// that we're awaiting a 'readable' event emission.
this.needReadable = false;
this.emittedReadable = false;
this.readableListening = false;
// object stream flag. Used to make read(n) ignore n and to
// make all the buffer merging and length checks go away
this.objectMode = !!options.objectMode;
// Crypto is kind of old and crusty. Historically, its default string
// encoding is 'binary' so we have to make this configurable.
// Everything else in the universe uses 'utf8', though.
this.defaultEncoding = options.defaultEncoding || 'utf8';
// when piping, we only care about 'readable' events that happen
// after read()ing all the bytes and not getting any pushback.
this.ranOut = false;
// the number of writers that are awaiting a drain event in .pipe()s
this.awaitDrain = 0;
// if true, a maybeReadMore has been scheduled
this.readingMore = false;
this.decoder = null;
this.encoding = null;
if (options.encoding) {
if (!StringDecoder)
StringDecoder = require('string_decoder').StringDecoder;
this.decoder = new StringDecoder(options.encoding);
this.encoding = options.encoding;
}
}
function Readable(options) {
if (!(this instanceof Readable))
return new Readable(options);
this._readableState = new ReadableState(options, this);
// legacy
this.readable = true;
Stream.call(this);
}
// Manually shove something into the read() buffer.
// This returns true if the highWaterMark has not been hit yet,
// similar to how Writable.write() returns true if you should
// write() some more.
Readable.prototype.push = function(chunk, encoding) {
var state = this._readableState;
if (typeof chunk === 'string' && !state.objectMode) {
encoding = encoding || state.defaultEncoding;
if (encoding !== state.encoding) {
chunk = new Buffer(chunk, encoding);
encoding = '';
}
}
return readableAddChunk(this, state, chunk, encoding, false);
};
// Unshift should *always* be something directly out of read()
Readable.prototype.unshift = function(chunk) {
var state = this._readableState;
return readableAddChunk(this, state, chunk, '', true);
};
function readableAddChunk(stream, state, chunk, encoding, addToFront) {
var er = chunkInvalid(state, chunk);
if (er) {
stream.emit('error', er);
} else if (chunk === null || chunk === undefined) {
state.reading = false;
if (!state.ended)
onEofChunk(stream, state);
} else if (state.objectMode || chunk && chunk.length > 0) {
if (state.ended && !addToFront) {
var e = new Error('stream.push() after EOF');
stream.emit('error', e);
} else if (state.endEmitted && addToFront) {
var e = new Error('stream.unshift() after end event');
stream.emit('error', e);
} else {
if (state.decoder && !addToFront && !encoding)
chunk = state.decoder.write(chunk);
// update the buffer info.
state.length += state.objectMode ? 1 : chunk.length;
if (addToFront) {
state.buffer.unshift(chunk);
} else {
state.reading = false;
state.buffer.push(chunk);
}
if (state.needReadable)
emitReadable(stream);
maybeReadMore(stream, state);
}
} else if (!addToFront) {
state.reading = false;
}
return needMoreData(state);
}
// if it's past the high water mark, we can push in some more.
// Also, if we have no data yet, we can stand some
// more bytes. This is to work around cases where hwm=0,
// such as the repl. Also, if the push() triggered a
// readable event, and the user called read(largeNumber) such that
// needReadable was set, then we ought to push more, so that another
// 'readable' event will be triggered.
function needMoreData(state) {
return !state.ended &&
(state.needReadable ||
state.length < state.highWaterMark ||
state.length === 0);
}
// backwards compatibility.
Readable.prototype.setEncoding = function(enc) {
if (!StringDecoder)
StringDecoder = require('string_decoder').StringDecoder;
this._readableState.decoder = new StringDecoder(enc);
this._readableState.encoding = enc;
};
// Don't raise the hwm > 128MB
var MAX_HWM = 0x800000;
function roundUpToNextPowerOf2(n) {
if (n >= MAX_HWM) {
n = MAX_HWM;
} else {
// Get the next highest power of 2
n--;
for (var p = 1; p < 32; p <<= 1) n |= n >> p;
n++;
}
return n;
}
function howMuchToRead(n, state) {
if (state.length === 0 && state.ended)
return 0;
if (state.objectMode)
return n === 0 ? 0 : 1;
if (isNaN(n) || n === null) {
// only flow one buffer at a time
if (state.flowing && state.buffer.length)
return state.buffer[0].length;
else
return state.length;
}
if (n <= 0)
return 0;
// If we're asking for more than the target buffer level,
// then raise the water mark. Bump up to the next highest
// power of 2, to prevent increasing it excessively in tiny
// amounts.
if (n > state.highWaterMark)
state.highWaterMark = roundUpToNextPowerOf2(n);
// don't have that much. return null, unless we've ended.
if (n > state.length) {
if (!state.ended) {
state.needReadable = true;
return 0;
} else
return state.length;
}
return n;
}
// you can override either this method, or the async _read(n) below.
Readable.prototype.read = function(n) {
var state = this._readableState;
state.calledRead = true;
var nOrig = n;
if (typeof n !== 'number' || n > 0)
state.emittedReadable = false;
// if we're doing read(0) to trigger a readable event, but we
// already have a bunch of data in the buffer, then just trigger
// the 'readable' event and move on.
if (n === 0 &&
state.needReadable &&
(state.length >= state.highWaterMark || state.ended)) {
emitReadable(this);
return null;
}
n = howMuchToRead(n, state);
// if we've ended, and we're now clear, then finish it up.
if (n === 0 && state.ended) {
if (state.length === 0)
endReadable(this);
return null;
}
// All the actual chunk generation logic needs to be
// *below* the call to _read. The reason is that in certain
// synthetic stream cases, such as passthrough streams, _read
// may be a completely synchronous operation which may change
// the state of the read buffer, providing enough data when
// before there was *not* enough.
//
// So, the steps are:
// 1. Figure out what the state of things will be after we do
// a read from the buffer.
//
// 2. If that resulting state will trigger a _read, then call _read.
// Note that this may be asynchronous, or synchronous. Yes, it is
// deeply ugly to write APIs this way, but that still doesn't mean
// that the Readable class should behave improperly, as streams are
// designed to be sync/async agnostic.
// Take note if the _read call is sync or async (ie, if the read call
// has returned yet), so that we know whether or not it's safe to emit
// 'readable' etc.
//
// 3. Actually pull the requested chunks out of the buffer and return.
// if we need a readable event, then we need to do some reading.
var doRead = state.needReadable;
// if we currently have less than the highWaterMark, then also read some
if (state.length - n <= state.highWaterMark)
doRead = true;
// however, if we've ended, then there's no point, and if we're already
// reading, then it's unnecessary.
if (state.ended || state.reading)
doRead = false;
if (doRead) {
state.reading = true;
state.sync = true;
// if the length is currently zero, then we *need* a readable event.
if (state.length === 0)
state.needReadable = true;
// call internal read method
this._read(state.highWaterMark);
state.sync = false;
}
// If _read called its callback synchronously, then `reading`
// will be false, and we need to re-evaluate how much data we
// can return to the user.
if (doRead && !state.reading)
n = howMuchToRead(nOrig, state);
var ret;
if (n > 0)
ret = fromList(n, state);
else
ret = null;
if (ret === null) {
state.needReadable = true;
n = 0;
}
state.length -= n;
// If we have nothing in the buffer, then we want to know
// as soon as we *do* get something into the buffer.
if (state.length === 0 && !state.ended)
state.needReadable = true;
// If we happened to read() exactly the remaining amount in the
// buffer, and the EOF has been seen at this point, then make sure
// that we emit 'end' on the very next tick.
if (state.ended && !state.endEmitted && state.length === 0)
endReadable(this);
return ret;
};
function chunkInvalid(state, chunk) {
var er = null;
if (!Buffer.isBuffer(chunk) &&
'string' !== typeof chunk &&
chunk !== null &&
chunk !== undefined &&
!state.objectMode &&
!er) {
er = new TypeError('Invalid non-string/buffer chunk');
}
return er;
}
function onEofChunk(stream, state) {
if (state.decoder && !state.ended) {
var chunk = state.decoder.end();
if (chunk && chunk.length) {
state.buffer.push(chunk);
state.length += state.objectMode ? 1 : chunk.length;
}
}
state.ended = true;
// if we've ended and we have some data left, then emit
// 'readable' now to make sure it gets picked up.
if (state.length > 0)
emitReadable(stream);
else
endReadable(stream);
}
// Don't emit readable right away in sync mode, because this can trigger
// another read() call => stack overflow. This way, it might trigger
// a nextTick recursion warning, but that's not so bad.
function emitReadable(stream) {
var state = stream._readableState;
state.needReadable = false;
if (state.emittedReadable)
return;
state.emittedReadable = true;
if (state.sync)
setImmediate(function() {
emitReadable_(stream);
});
else
emitReadable_(stream);
}
function emitReadable_(stream) {
stream.emit('readable');
}
// at this point, the user has presumably seen the 'readable' event,
// and called read() to consume some data. that may have triggered
// in turn another _read(n) call, in which case reading = true if
// it's in progress.
// However, if we're not ended, or reading, and the length < hwm,
// then go ahead and try to read some more preemptively.
function maybeReadMore(stream, state) {
if (!state.readingMore) {
state.readingMore = true;
setImmediate(function() {
maybeReadMore_(stream, state);
});
}
}
function maybeReadMore_(stream, state) {
var len = state.length;
while (!state.reading && !state.flowing && !state.ended &&
state.length < state.highWaterMark) {
stream.read(0);
if (len === state.length)
// didn't get any data, stop spinning.
break;
else
len = state.length;
}
state.readingMore = false;
}
// abstract method. to be overridden in specific implementation classes.
// call cb(er, data) where data is <= n in length.
// for virtual (non-string, non-buffer) streams, "length" is somewhat
// arbitrary, and perhaps not very meaningful.
Readable.prototype._read = function(n) {
this.emit('error', new Error('not implemented'));
};
Readable.prototype.pipe = function(dest, pipeOpts) {
var src = this;
var state = this._readableState;
switch (state.pipesCount) {
case 0:
state.pipes = dest;
break;
case 1:
state.pipes = [state.pipes, dest];
break;
default:
state.pipes.push(dest);
break;
}
state.pipesCount += 1;
var doEnd = (!pipeOpts || pipeOpts.end !== false) &&
dest !== process.stdout &&
dest !== process.stderr;
var endFn = doEnd ? onend : cleanup;
if (state.endEmitted)
setImmediate(endFn);
else
src.once('end', endFn);
dest.on('unpipe', onunpipe);
function onunpipe(readable) {
if (readable !== src) return;
cleanup();
}
function onend() {
dest.end();
}
// when the dest drains, it reduces the awaitDrain counter
// on the source. This would be more elegant with a .once()
// handler in flow(), but adding and removing repeatedly is
// too slow.
var ondrain = pipeOnDrain(src);
dest.on('drain', ondrain);
function cleanup() {
// cleanup event handlers once the pipe is broken
dest.removeListener('close', onclose);
dest.removeListener('finish', onfinish);
dest.removeListener('drain', ondrain);
dest.removeListener('error', onerror);
dest.removeListener('unpipe', onunpipe);
src.removeListener('end', onend);
src.removeListener('end', cleanup);
// if the reader is waiting for a drain event from this
// specific writer, then it would cause it to never start
// flowing again.
// So, if this is awaiting a drain, then we just call it now.
// If we don't know, then assume that we are waiting for one.
if (!dest._writableState || dest._writableState.needDrain)
ondrain();
}
// if the dest has an error, then stop piping into it.
// however, don't suppress the throwing behavior for this.
// check for listeners before emit removes one-time listeners.
var errListeners = EE.listenerCount(dest, 'error');
function onerror(er) {
unpipe();
if (errListeners === 0 && EE.listenerCount(dest, 'error') === 0)
dest.emit('error', er);
}
dest.once('error', onerror);
// Both close and finish should trigger unpipe, but only once.
function onclose() {
dest.removeListener('finish', onfinish);
unpipe();
}
dest.once('close', onclose);
function onfinish() {
dest.removeListener('close', onclose);
unpipe();
}
dest.once('finish', onfinish);
function unpipe() {
src.unpipe(dest);
}
// tell the dest that it's being piped to
dest.emit('pipe', src);
// start the flow if it hasn't been started already.
if (!state.flowing) {
// the handler that waits for readable events after all
// the data gets sucked out in flow.
// This would be easier to follow with a .once() handler
// in flow(), but that is too slow.
this.on('readable', pipeOnReadable);
state.flowing = true;
setImmediate(function() {
flow(src);
});
}
return dest;
};
function pipeOnDrain(src) {
return function() {
var dest = this;
var state = src._readableState;
state.awaitDrain--;
if (state.awaitDrain === 0)
flow(src);
};
}
function flow(src) {
var state = src._readableState;
var chunk;
state.awaitDrain = 0;
function write(dest, i, list) {
var written = dest.write(chunk);
if (false === written) {
state.awaitDrain++;
}
}
while (state.pipesCount && null !== (chunk = src.read())) {
if (state.pipesCount === 1)
write(state.pipes, 0, null);
else
forEach(state.pipes, write);
src.emit('data', chunk);
// if anyone needs a drain, then we have to wait for that.
if (state.awaitDrain > 0)
return;
}
// if every destination was unpiped, either before entering this
// function, or in the while loop, then stop flowing.
//
// NB: This is a pretty rare edge case.
if (state.pipesCount === 0) {
state.flowing = false;
// if there were data event listeners added, then switch to old mode.
if (EE.listenerCount(src, 'data') > 0)
emitDataEvents(src);
return;
}
// at this point, no one needed a drain, so we just ran out of data
// on the next readable event, start it over again.
state.ranOut = true;
}
function pipeOnReadable() {
if (this._readableState.ranOut) {
this._readableState.ranOut = false;
flow(this);
}
}
Readable.prototype.unpipe = function(dest) {
var state = this._readableState;
// if we're not piping anywhere, then do nothing.
if (state.pipesCount === 0)
return this;
// just one destination. most common case.
if (state.pipesCount === 1) {
// passed in one, but it's not the right one.
if (dest && dest !== state.pipes)
return this;
if (!dest)
dest = state.pipes;
// got a match.
state.pipes = null;
state.pipesCount = 0;
this.removeListener('readable', pipeOnReadable);
state.flowing = false;
if (dest)
dest.emit('unpipe', this);
return this;
}
// slow case. multiple pipe destinations.
if (!dest) {
// remove all.
var dests = state.pipes;
var len = state.pipesCount;
state.pipes = null;
state.pipesCount = 0;
this.removeListener('readable', pipeOnReadable);
state.flowing = false;
for (var i = 0; i < len; i++)
dests[i].emit('unpipe', this);
return this;
}
// try to find the right one.
var i = indexOf(state.pipes, dest);
if (i === -1)
return this;
state.pipes.splice(i, 1);
state.pipesCount -= 1;
if (state.pipesCount === 1)
state.pipes = state.pipes[0];
dest.emit('unpipe', this);
return this;
};
// set up data events if they are asked for
// Ensure readable listeners eventually get something
Readable.prototype.on = function(ev, fn) {
var res = Stream.prototype.on.call(this, ev, fn);
if (ev === 'data' && !this._readableState.flowing)
emitDataEvents(this);
if (ev === 'readable' && this.readable) {
var state = this._readableState;
if (!state.readableListening) {
state.readableListening = true;
state.emittedReadable = false;
state.needReadable = true;
if (!state.reading) {
this.read(0);
} else if (state.length) {
emitReadable(this, state);
}
}
}
return res;
};
Readable.prototype.addListener = Readable.prototype.on;
// pause() and resume() are remnants of the legacy readable stream API
// If the user uses them, then switch into old mode.
Readable.prototype.resume = function() {
emitDataEvents(this);
this.read(0);
this.emit('resume');
};
Readable.prototype.pause = function() {
emitDataEvents(this, true);
this.emit('pause');
};
function emitDataEvents(stream, startPaused) {
var state = stream._readableState;
if (state.flowing) {
// https://github.com/isaacs/readable-stream/issues/16
throw new Error('Cannot switch to old mode now.');
}
var paused = startPaused || false;
var readable = false;
// convert to an old-style stream.
stream.readable = true;
stream.pipe = Stream.prototype.pipe;
stream.on = stream.addListener = Stream.prototype.on;
stream.on('readable', function() {
readable = true;
var c;
while (!paused && (null !== (c = stream.read())))
stream.emit('data', c);
if (c === null) {
readable = false;
stream._readableState.needReadable = true;
}
});
stream.pause = function() {
paused = true;
this.emit('pause');
};
stream.resume = function() {
paused = false;
if (readable)
setImmediate(function() {
stream.emit('readable');
});
else
this.read(0);
this.emit('resume');
};
// now make it start, just in case it hadn't already.
stream.emit('readable');
}
// wrap an old-style stream as the async data source.
// This is *not* part of the readable stream interface.
// It is an ugly unfortunate mess of history.
Readable.prototype.wrap = function(stream) {
var state = this._readableState;
var paused = false;
var self = this;
stream.on('end', function() {
if (state.decoder && !state.ended) {
var chunk = state.decoder.end();
if (chunk && chunk.length)
self.push(chunk);
}
self.push(null);
});
stream.on('data', function(chunk) {
if (state.decoder)
chunk = state.decoder.write(chunk);
if (!chunk || !state.objectMode && !chunk.length)
return;
var ret = self.push(chunk);
if (!ret) {
paused = true;
stream.pause();
}
});
// proxy all the other methods.
// important when wrapping filters and duplexes.
for (var i in stream) {
if (typeof stream[i] === 'function' &&
typeof this[i] === 'undefined') {
this[i] = function(method) { return function() {
return stream[method].apply(stream, arguments);
}}(i);
}
}
// proxy certain important events.
var events = ['error', 'close', 'destroy', 'pause', 'resume'];
forEach(events, function(ev) {
stream.on(ev, function (x) {
return self.emit.apply(self, ev, x);
});
});
// when we try to consume some more bytes, simply unpause the
// underlying stream.
self._read = function(n) {
if (paused) {
paused = false;
stream.resume();
}
};
return self;
};
// exposed for testing purposes only.
Readable._fromList = fromList;
// Pluck off n bytes from an array of buffers.
// Length is the combined lengths of all the buffers in the list.
function fromList(n, state) {
var list = state.buffer;
var length = state.length;
var stringMode = !!state.decoder;
var objectMode = !!state.objectMode;
var ret;
// nothing in the list, definitely empty.
if (list.length === 0)
return null;
if (length === 0)
ret = null;
else if (objectMode)
ret = list.shift();
else if (!n || n >= length) {
// read it all, truncate the array.
if (stringMode)
ret = list.join('');
else
ret = Buffer.concat(list, length);
list.length = 0;
} else {
// read just some of it.
if (n < list[0].length) {
// just take a part of the first list item.
// slice is the same for buffers and strings.
var buf = list[0];
ret = buf.slice(0, n);
list[0] = buf.slice(n);
} else if (n === list[0].length) {
// first list is a perfect match
ret = list.shift();
} else {
// complex case.
// we have enough to cover it, but it spans past the first buffer.
if (stringMode)
ret = '';
else
ret = new Buffer(n);
var c = 0;
for (var i = 0, l = list.length; i < l && c < n; i++) {
var buf = list[0];
var cpy = Math.min(n - c, buf.length);
if (stringMode)
ret += buf.slice(0, cpy);
else
buf.copy(ret, c, 0, cpy);
if (cpy < buf.length)
list[0] = buf.slice(cpy);
else
list.shift();
c += cpy;
}
}
}
return ret;
}
function endReadable(stream) {
var state = stream._readableState;
// If we get here before consuming all the bytes, then that is a
// bug in node. Should never happen.
if (state.length > 0)
throw new Error('endReadable called on non-empty stream');
if (!state.endEmitted && state.calledRead) {
state.ended = true;
setImmediate(function() {
// Check that we didn't get one last unshift.
if (!state.endEmitted && state.length === 0) {
state.endEmitted = true;
stream.readable = false;
stream.emit('end');
}
});
}
}
function forEach (xs, f) {
for (var i = 0, l = xs.length; i < l; i++) {
f(xs[i], i);
}
}
function indexOf (xs, x) {
for (var i = 0, l = xs.length; i < l; i++) {
if (xs[i] === x) return i;
}
return -1;
}
}).call(this,require("g5I+bs"))
},{"./index.js":19,"buffer":3,"events":5,"g5I+bs":13,"inherits":10,"process/browser.js":20,"string_decoder":25}],23:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a transform stream is a readable/writable stream where you do
// something with the data. Sometimes it's called a "filter",
// but that's not a great name for it, since that implies a thing where
// some bits pass through, and others are simply ignored. (That would
// be a valid example of a transform, of course.)
//
// While the output is causally related to the input, it's not a
// necessarily symmetric or synchronous transformation. For example,
// a zlib stream might take multiple plain-text writes(), and then
// emit a single compressed chunk some time in the future.
//
// Here's how this works:
//
// The Transform stream has all the aspects of the readable and writable
// stream classes. When you write(chunk), that calls _write(chunk,cb)
// internally, and returns false if there's a lot of pending writes
// buffered up. When you call read(), that calls _read(n) until
// there's enough pending readable data buffered up.
//
// In a transform stream, the written data is placed in a buffer. When
// _read(n) is called, it transforms the queued up data, calling the
// buffered _write cb's as it consumes chunks. If consuming a single
// written chunk would result in multiple output chunks, then the first
// outputted bit calls the readcb, and subsequent chunks just go into
// the read buffer, and will cause it to emit 'readable' if necessary.
//
// This way, back-pressure is actually determined by the reading side,
// since _read has to be called to start processing a new chunk. However,
// a pathological inflate type of transform can cause excessive buffering
// here. For example, imagine a stream where every byte of input is
// interpreted as an integer from 0-255, and then results in that many
// bytes of output. Writing the 4 bytes {ff,ff,ff,ff} would result in
// 1kb of data being output. In this case, you could write a very small
// amount of input, and end up with a very large amount of output. In
// such a pathological inflating mechanism, there'd be no way to tell
// the system to stop doing the transform. A single 4MB write could
// cause the system to run out of memory.
//
// However, even in such a pathological case, only a single written chunk
// would be consumed, and then the rest would wait (un-transformed) until
// the results of the previous transformed chunk were consumed.
module.exports = Transform;
var Duplex = require('./duplex.js');
var inherits = require('inherits');
inherits(Transform, Duplex);
function TransformState(options, stream) {
this.afterTransform = function(er, data) {
return afterTransform(stream, er, data);
};
this.needTransform = false;
this.transforming = false;
this.writecb = null;
this.writechunk = null;
}
function afterTransform(stream, er, data) {
var ts = stream._transformState;
ts.transforming = false;
var cb = ts.writecb;
if (!cb)
return stream.emit('error', new Error('no writecb in Transform class'));
ts.writechunk = null;
ts.writecb = null;
if (data !== null && data !== undefined)
stream.push(data);
if (cb)
cb(er);
var rs = stream._readableState;
rs.reading = false;
if (rs.needReadable || rs.length < rs.highWaterMark) {
stream._read(rs.highWaterMark);
}
}
function Transform(options) {
if (!(this instanceof Transform))
return new Transform(options);
Duplex.call(this, options);
var ts = this._transformState = new TransformState(options, this);
// when the writable side finishes, then flush out anything remaining.
var stream = this;
// start out asking for a readable event once data is transformed.
this._readableState.needReadable = true;
// we have implemented the _read method, and done the other things
// that Readable wants before the first _read call, so unset the
// sync guard flag.
this._readableState.sync = false;
this.once('finish', function() {
if ('function' === typeof this._flush)
this._flush(function(er) {
done(stream, er);
});
else
done(stream);
});
}
Transform.prototype.push = function(chunk, encoding) {
this._transformState.needTransform = false;
return Duplex.prototype.push.call(this, chunk, encoding);
};
// This is the part where you do stuff!
// override this function in implementation classes.
// 'chunk' is an input chunk.
//
// Call `push(newChunk)` to pass along transformed output
// to the readable side. You may call 'push' zero or more times.
//
// Call `cb(err)` when you are done with this chunk. If you pass
// an error, then that'll put the hurt on the whole operation. If you
// never call cb(), then you'll never get another chunk.
Transform.prototype._transform = function(chunk, encoding, cb) {
throw new Error('not implemented');
};
Transform.prototype._write = function(chunk, encoding, cb) {
var ts = this._transformState;
ts.writecb = cb;
ts.writechunk = chunk;
ts.writeencoding = encoding;
if (!ts.transforming) {
var rs = this._readableState;
if (ts.needTransform ||
rs.needReadable ||
rs.length < rs.highWaterMark)
this._read(rs.highWaterMark);
}
};
// Doesn't matter what the args are here.
// _transform does all the work.
// That we got here means that the readable side wants more data.
Transform.prototype._read = function(n) {
var ts = this._transformState;
if (ts.writechunk && ts.writecb && !ts.transforming) {
ts.transforming = true;
this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
} else {
// mark that we need a transform, so that any data that comes in
// will get processed, now that we've asked for it.
ts.needTransform = true;
}
};
function done(stream, er) {
if (er)
return stream.emit('error', er);
// if there's nothing in the write buffer, then that means
// that nothing more will ever be provided
var ws = stream._writableState;
var rs = stream._readableState;
var ts = stream._transformState;
if (ws.length)
throw new Error('calling transform done when ws.length != 0');
if (ts.transforming)
throw new Error('calling transform done when still transforming');
return stream.push(null);
}
},{"./duplex.js":18,"inherits":10}],24:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// A bit simpler than readable streams.
// Implement an async ._write(chunk, cb), and it'll handle all
// the drain event emission and buffering.
module.exports = Writable;
Writable.WritableState = WritableState;
var isUint8Array = typeof Uint8Array !== 'undefined'
? function (x) { return x instanceof Uint8Array }
: function (x) {
return x && x.constructor && x.constructor.name === 'Uint8Array'
}
;
var isArrayBuffer = typeof ArrayBuffer !== 'undefined'
? function (x) { return x instanceof ArrayBuffer }
: function (x) {
return x && x.constructor && x.constructor.name === 'ArrayBuffer'
}
;
var inherits = require('inherits');
var Stream = require('./index.js');
var setImmediate = require('process/browser.js').nextTick;
var Buffer = require('buffer').Buffer;
inherits(Writable, Stream);
function WriteReq(chunk, encoding, cb) {
this.chunk = chunk;
this.encoding = encoding;
this.callback = cb;
}
function WritableState(options, stream) {
options = options || {};
// the point at which write() starts returning false
// Note: 0 is a valid value, means that we always return false if
// the entire buffer is not flushed immediately on write()
var hwm = options.highWaterMark;
this.highWaterMark = (hwm || hwm === 0) ? hwm : 16 * 1024;
// object stream flag to indicate whether or not this stream
// contains buffers or objects.
this.objectMode = !!options.objectMode;
// cast to ints.
this.highWaterMark = ~~this.highWaterMark;
this.needDrain = false;
// at the start of calling end()
this.ending = false;
// when end() has been called, and returned
this.ended = false;
// when 'finish' is emitted
this.finished = false;
// should we decode strings into buffers before passing to _write?
// this is here so that some node-core streams can optimize string
// handling at a lower level.
var noDecode = options.decodeStrings === false;
this.decodeStrings = !noDecode;
// Crypto is kind of old and crusty. Historically, its default string
// encoding is 'binary' so we have to make this configurable.
// Everything else in the universe uses 'utf8', though.
this.defaultEncoding = options.defaultEncoding || 'utf8';
// not an actual buffer we keep track of, but a measurement
// of how much we're waiting to get pushed to some underlying
// socket or file.
this.length = 0;
// a flag to see when we're in the middle of a write.
this.writing = false;
// a flag to be able to tell if the onwrite cb is called immediately,
// or on a later tick. We set this to true at first, becuase any
// actions that shouldn't happen until "later" should generally also
// not happen before the first write call.
this.sync = true;
// a flag to know if we're processing previously buffered items, which
// may call the _write() callback in the same tick, so that we don't
// end up in an overlapped onwrite situation.
this.bufferProcessing = false;
// the callback that's passed to _write(chunk,cb)
this.onwrite = function(er) {
onwrite(stream, er);
};
// the callback that the user supplies to write(chunk,encoding,cb)
this.writecb = null;
// the amount that is being written when _write is called.
this.writelen = 0;
this.buffer = [];
}
function Writable(options) {
// Writable ctor is applied to Duplexes, though they're not
// instanceof Writable, they're instanceof Readable.
if (!(this instanceof Writable) && !(this instanceof Stream.Duplex))
return new Writable(options);
this._writableState = new WritableState(options, this);
// legacy.
this.writable = true;
Stream.call(this);
}
// Otherwise people can pipe Writable streams, which is just wrong.
Writable.prototype.pipe = function() {
this.emit('error', new Error('Cannot pipe. Not readable.'));
};
function writeAfterEnd(stream, state, cb) {
var er = new Error('write after end');
// TODO: defer error events consistently everywhere, not just the cb
stream.emit('error', er);
setImmediate(function() {
cb(er);
});
}
// If we get something that is not a buffer, string, null, or undefined,
// and we're not in objectMode, then that's an error.
// Otherwise stream chunks are all considered to be of length=1, and the
// watermarks determine how many objects to keep in the buffer, rather than
// how many bytes or characters.
function validChunk(stream, state, chunk, cb) {
var valid = true;
if (!Buffer.isBuffer(chunk) &&
'string' !== typeof chunk &&
chunk !== null &&
chunk !== undefined &&
!state.objectMode) {
var er = new TypeError('Invalid non-string/buffer chunk');
stream.emit('error', er);
setImmediate(function() {
cb(er);
});
valid = false;
}
return valid;
}
Writable.prototype.write = function(chunk, encoding, cb) {
var state = this._writableState;
var ret = false;
if (typeof encoding === 'function') {
cb = encoding;
encoding = null;
}
if (!Buffer.isBuffer(chunk) && isUint8Array(chunk))
chunk = new Buffer(chunk);
if (isArrayBuffer(chunk) && typeof Uint8Array !== 'undefined')
chunk = new Buffer(new Uint8Array(chunk));
if (Buffer.isBuffer(chunk))
encoding = 'buffer';
else if (!encoding)
encoding = state.defaultEncoding;
if (typeof cb !== 'function')
cb = function() {};
if (state.ended)
writeAfterEnd(this, state, cb);
else if (validChunk(this, state, chunk, cb))
ret = writeOrBuffer(this, state, chunk, encoding, cb);
return ret;
};
function decodeChunk(state, chunk, encoding) {
if (!state.objectMode &&
state.decodeStrings !== false &&
typeof chunk === 'string') {
chunk = new Buffer(chunk, encoding);
}
return chunk;
}
// if we're already writing something, then just put this
// in the queue, and wait our turn. Otherwise, call _write
// If we return false, then we need a drain event, so set that flag.
function writeOrBuffer(stream, state, chunk, encoding, cb) {
chunk = decodeChunk(state, chunk, encoding);
var len = state.objectMode ? 1 : chunk.length;
state.length += len;
var ret = state.length < state.highWaterMark;
state.needDrain = !ret;
if (state.writing)
state.buffer.push(new WriteReq(chunk, encoding, cb));
else
doWrite(stream, state, len, chunk, encoding, cb);
return ret;
}
function doWrite(stream, state, len, chunk, encoding, cb) {
state.writelen = len;
state.writecb = cb;
state.writing = true;
state.sync = true;
stream._write(chunk, encoding, state.onwrite);
state.sync = false;
}
function onwriteError(stream, state, sync, er, cb) {
if (sync)
setImmediate(function() {
cb(er);
});
else
cb(er);
stream.emit('error', er);
}
function onwriteStateUpdate(state) {
state.writing = false;
state.writecb = null;
state.length -= state.writelen;
state.writelen = 0;
}
function onwrite(stream, er) {
var state = stream._writableState;
var sync = state.sync;
var cb = state.writecb;
onwriteStateUpdate(state);
if (er)
onwriteError(stream, state, sync, er, cb);
else {
// Check if we're actually ready to finish, but don't emit yet
var finished = needFinish(stream, state);
if (!finished && !state.bufferProcessing && state.buffer.length)
clearBuffer(stream, state);
if (sync) {
setImmediate(function() {
afterWrite(stream, state, finished, cb);
});
} else {
afterWrite(stream, state, finished, cb);
}
}
}
function afterWrite(stream, state, finished, cb) {
if (!finished)
onwriteDrain(stream, state);
cb();
if (finished)
finishMaybe(stream, state);
}
// Must force callback to be called on nextTick, so that we don't
// emit 'drain' before the write() consumer gets the 'false' return
// value, and has a chance to attach a 'drain' listener.
function onwriteDrain(stream, state) {
if (state.length === 0 && state.needDrain) {
state.needDrain = false;
stream.emit('drain');
}
}
// if there's something in the buffer waiting, then process it
function clearBuffer(stream, state) {
state.bufferProcessing = true;
for (var c = 0; c < state.buffer.length; c++) {
var entry = state.buffer[c];
var chunk = entry.chunk;
var encoding = entry.encoding;
var cb = entry.callback;
var len = state.objectMode ? 1 : chunk.length;
doWrite(stream, state, len, chunk, encoding, cb);
// if we didn't call the onwrite immediately, then
// it means that we need to wait until it does.
// also, that means that the chunk and cb are currently
// being processed, so move the buffer counter past them.
if (state.writing) {
c++;
break;
}
}
state.bufferProcessing = false;
if (c < state.buffer.length)
state.buffer = state.buffer.slice(c);
else
state.buffer.length = 0;
}
Writable.prototype._write = function(chunk, encoding, cb) {
cb(new Error('not implemented'));
};
Writable.prototype.end = function(chunk, encoding, cb) {
var state = this._writableState;
if (typeof chunk === 'function') {
cb = chunk;
chunk = null;
encoding = null;
} else if (typeof encoding === 'function') {
cb = encoding;
encoding = null;
}
if (typeof chunk !== 'undefined' && chunk !== null)
this.write(chunk, encoding);
// ignore unnecessary end() calls.
if (!state.ending && !state.finished)
endWritable(this, state, cb);
};
function needFinish(stream, state) {
return (state.ending &&
state.length === 0 &&
!state.finished &&
!state.writing);
}
function finishMaybe(stream, state) {
var need = needFinish(stream, state);
if (need) {
state.finished = true;
stream.emit('finish');
}
return need;
}
function endWritable(stream, state, cb) {
state.ending = true;
finishMaybe(stream, state);
if (cb) {
if (state.finished)
setImmediate(cb);
else
stream.once('finish', cb);
}
state.ended = true;
}
},{"./index.js":19,"buffer":3,"inherits":10,"process/browser.js":20}],25:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
var Buffer = require('buffer').Buffer;
function assertEncoding(encoding) {
if (encoding && !Buffer.isEncoding(encoding)) {
throw new Error('Unknown encoding: ' + encoding);
}
}
var StringDecoder = exports.StringDecoder = function(encoding) {
this.encoding = (encoding || 'utf8').toLowerCase().replace(/[-_]/, '');
assertEncoding(encoding);
switch (this.encoding) {
case 'utf8':
// CESU-8 represents each of Surrogate Pair by 3-bytes
this.surrogateSize = 3;
break;
case 'ucs2':
case 'utf16le':
// UTF-16 represents each of Surrogate Pair by 2-bytes
this.surrogateSize = 2;
this.detectIncompleteChar = utf16DetectIncompleteChar;
break;
case 'base64':
// Base-64 stores 3 bytes in 4 chars, and pads the remainder.
this.surrogateSize = 3;
this.detectIncompleteChar = base64DetectIncompleteChar;
break;
default:
this.write = passThroughWrite;
return;
}
this.charBuffer = new Buffer(6);
this.charReceived = 0;
this.charLength = 0;
};
StringDecoder.prototype.write = function(buffer) {
var charStr = '';
var offset = 0;
// if our last write ended with an incomplete multibyte character
while (this.charLength) {
// determine how many remaining bytes this buffer has to offer for this char
var i = (buffer.length >= this.charLength - this.charReceived) ?
this.charLength - this.charReceived :
buffer.length;
// add the new bytes to the char buffer
buffer.copy(this.charBuffer, this.charReceived, offset, i);
this.charReceived += (i - offset);
offset = i;
if (this.charReceived < this.charLength) {
// still not enough chars in this buffer? wait for more ...
return '';
}
// get the character that was split
charStr = this.charBuffer.slice(0, this.charLength).toString(this.encoding);
// lead surrogate (D800-DBFF) is also the incomplete character
var charCode = charStr.charCodeAt(charStr.length - 1);
if (charCode >= 0xD800 && charCode <= 0xDBFF) {
this.charLength += this.surrogateSize;
charStr = '';
continue;
}
this.charReceived = this.charLength = 0;
// if there are no more bytes in this buffer, just emit our char
if (i == buffer.length) return charStr;
// otherwise cut off the characters end from the beginning of this buffer
buffer = buffer.slice(i, buffer.length);
break;
}
var lenIncomplete = this.detectIncompleteChar(buffer);
var end = buffer.length;
if (this.charLength) {
// buffer the incomplete character bytes we got
buffer.copy(this.charBuffer, 0, buffer.length - lenIncomplete, end);
this.charReceived = lenIncomplete;
end -= lenIncomplete;
}
charStr += buffer.toString(this.encoding, 0, end);
var end = charStr.length - 1;
var charCode = charStr.charCodeAt(end);
// lead surrogate (D800-DBFF) is also the incomplete character
if (charCode >= 0xD800 && charCode <= 0xDBFF) {
var size = this.surrogateSize;
this.charLength += size;
this.charReceived += size;
this.charBuffer.copy(this.charBuffer, size, 0, size);
this.charBuffer.write(charStr.charAt(charStr.length - 1), this.encoding);
return charStr.substring(0, end);
}
// or just emit the charStr
return charStr;
};
StringDecoder.prototype.detectIncompleteChar = function(buffer) {
// determine how many bytes we have to check at the end of this buffer
var i = (buffer.length >= 3) ? 3 : buffer.length;
// Figure out if one of the last i bytes of our buffer announces an
// incomplete char.
for (; i > 0; i--) {
var c = buffer[buffer.length - i];
// See http://en.wikipedia.org/wiki/UTF-8#Description
// 110XXXXX
if (i == 1 && c >> 5 == 0x06) {
this.charLength = 2;
break;
}
// 1110XXXX
if (i <= 2 && c >> 4 == 0x0E) {
this.charLength = 3;
break;
}
// 11110XXX
if (i <= 3 && c >> 3 == 0x1E) {
this.charLength = 4;
break;
}
}
return i;
};
StringDecoder.prototype.end = function(buffer) {
var res = '';
if (buffer && buffer.length)
res = this.write(buffer);
if (this.charReceived) {
var cr = this.charReceived;
var buf = this.charBuffer;
var enc = this.encoding;
res += buf.slice(0, cr).toString(enc);
}
return res;
};
function passThroughWrite(buffer) {
return buffer.toString(this.encoding);
}
function utf16DetectIncompleteChar(buffer) {
var incomplete = this.charReceived = buffer.length % 2;
this.charLength = incomplete ? 2 : 0;
return incomplete;
}
function base64DetectIncompleteChar(buffer) {
var incomplete = this.charReceived = buffer.length % 3;
this.charLength = incomplete ? 3 : 0;
return incomplete;
}
},{"buffer":3}],26:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
var punycode = require('punycode');
exports.parse = urlParse;
exports.resolve = urlResolve;
exports.resolveObject = urlResolveObject;
exports.format = urlFormat;
exports.Url = Url;
function Url() {
this.protocol = null;
this.slashes = null;
this.auth = null;
this.host = null;
this.port = null;
this.hostname = null;
this.hash = null;
this.search = null;
this.query = null;
this.pathname = null;
this.path = null;
this.href = null;
}
// Reference: RFC 3986, RFC 1808, RFC 2396
// define these here so at least they only have to be
// compiled once on the first module load.
var protocolPattern = /^([a-z0-9.+-]+:)/i,
portPattern = /:[0-9]*$/,
// RFC 2396: characters reserved for delimiting URLs.
// We actually just auto-escape these.
delims = ['<', '>', '"', '`', ' ', '\r', '\n', '\t'],
// RFC 2396: characters not allowed for various reasons.
unwise = ['{', '}', '|', '\\', '^', '`'].concat(delims),
// Allowed by RFCs, but cause of XSS attacks. Always escape these.
autoEscape = ['\''].concat(unwise),
// Characters that are never ever allowed in a hostname.
// Note that any invalid chars are also handled, but these
// are the ones that are *expected* to be seen, so we fast-path
// them.
nonHostChars = ['%', '/', '?', ';', '#'].concat(autoEscape),
hostEndingChars = ['/', '?', '#'],
hostnameMaxLen = 255,
hostnamePartPattern = /^[a-z0-9A-Z_-]{0,63}$/,
hostnamePartStart = /^([a-z0-9A-Z_-]{0,63})(.*)$/,
// protocols that can allow "unsafe" and "unwise" chars.
unsafeProtocol = {
'javascript': true,
'javascript:': true
},
// protocols that never have a hostname.
hostlessProtocol = {
'javascript': true,
'javascript:': true
},
// protocols that always contain a // bit.
slashedProtocol = {
'http': true,
'https': true,
'ftp': true,
'gopher': true,
'file': true,
'http:': true,
'https:': true,
'ftp:': true,
'gopher:': true,
'file:': true
},
querystring = require('querystring');
function urlParse(url, parseQueryString, slashesDenoteHost) {
if (url && isObject(url) && url instanceof Url) return url;
var u = new Url;
u.parse(url, parseQueryString, slashesDenoteHost);
return u;
}
Url.prototype.parse = function(url, parseQueryString, slashesDenoteHost) {
if (!isString(url)) {
throw new TypeError("Parameter 'url' must be a string, not " + typeof url);
}
var rest = url;
// trim before proceeding.
// This is to support parse stuff like " http://foo.com \n"
rest = rest.trim();
var proto = protocolPattern.exec(rest);
if (proto) {
proto = proto[0];
var lowerProto = proto.toLowerCase();
this.protocol = lowerProto;
rest = rest.substr(proto.length);
}
// figure out if it's got a host
// user@server is *always* interpreted as a hostname, and url
// resolution will treat //foo/bar as host=foo,path=bar because that's
// how the browser resolves relative URLs.
if (slashesDenoteHost || proto || rest.match(/^\/\/[^@\/]+@[^@\/]+/)) {
var slashes = rest.substr(0, 2) === '//';
if (slashes && !(proto && hostlessProtocol[proto])) {
rest = rest.substr(2);
this.slashes = true;
}
}
if (!hostlessProtocol[proto] &&
(slashes || (proto && !slashedProtocol[proto]))) {
// there's a hostname.
// the first instance of /, ?, ;, or # ends the host.
//
// If there is an @ in the hostname, then non-host chars *are* allowed
// to the left of the last @ sign, unless some host-ending character
// comes *before* the @-sign.
// URLs are obnoxious.
//
// ex:
// http://a@b@c/ => user:a@b host:c
// http://a@b?@c => user:a host:c path:/?@c
// v0.12 TODO(isaacs): This is not quite how Chrome does things.
// Review our test case against browsers more comprehensively.
// find the first instance of any hostEndingChars
var hostEnd = -1;
for (var i = 0; i < hostEndingChars.length; i++) {
var hec = rest.indexOf(hostEndingChars[i]);
if (hec !== -1 && (hostEnd === -1 || hec < hostEnd))
hostEnd = hec;
}
// at this point, either we have an explicit point where the
// auth portion cannot go past, or the last @ char is the decider.
var auth, atSign;
if (hostEnd === -1) {
// atSign can be anywhere.
atSign = rest.lastIndexOf('@');
} else {
// atSign must be in auth portion.
// http://a@b/c@d => host:b auth:a path:/c@d
atSign = rest.lastIndexOf('@', hostEnd);
}
// Now we have a portion which is definitely the auth.
// Pull that off.
if (atSign !== -1) {
auth = rest.slice(0, atSign);
rest = rest.slice(atSign + 1);
this.auth = decodeURIComponent(auth);
}
// the host is the remaining to the left of the first non-host char
hostEnd = -1;
for (var i = 0; i < nonHostChars.length; i++) {
var hec = rest.indexOf(nonHostChars[i]);
if (hec !== -1 && (hostEnd === -1 || hec < hostEnd))
hostEnd = hec;
}
// if we still have not hit it, then the entire thing is a host.
if (hostEnd === -1)
hostEnd = rest.length;
this.host = rest.slice(0, hostEnd);
rest = rest.slice(hostEnd);
// pull out port.
this.parseHost();
// we've indicated that there is a hostname,
// so even if it's empty, it has to be present.
this.hostname = this.hostname || '';
// if hostname begins with [ and ends with ]
// assume that it's an IPv6 address.
var ipv6Hostname = this.hostname[0] === '[' &&
this.hostname[this.hostname.length - 1] === ']';
// validate a little.
if (!ipv6Hostname) {
var hostparts = this.hostname.split(/\./);
for (var i = 0, l = hostparts.length; i < l; i++) {
var part = hostparts[i];
if (!part) continue;
if (!part.match(hostnamePartPattern)) {
var newpart = '';
for (var j = 0, k = part.length; j < k; j++) {
if (part.charCodeAt(j) > 127) {
// we replace non-ASCII char with a temporary placeholder
// we need this to make sure size of hostname is not
// broken by replacing non-ASCII by nothing
newpart += 'x';
} else {
newpart += part[j];
}
}
// we test again with ASCII char only
if (!newpart.match(hostnamePartPattern)) {
var validParts = hostparts.slice(0, i);
var notHost = hostparts.slice(i + 1);
var bit = part.match(hostnamePartStart);
if (bit) {
validParts.push(bit[1]);
notHost.unshift(bit[2]);
}
if (notHost.length) {
rest = '/' + notHost.join('.') + rest;
}
this.hostname = validParts.join('.');
break;
}
}
}
}
if (this.hostname.length > hostnameMaxLen) {
this.hostname = '';
} else {
// hostnames are always lower case.
this.hostname = this.hostname.toLowerCase();
}
if (!ipv6Hostname) {
// IDNA Support: Returns a puny coded representation of "domain".
// It only converts the part of the domain name that
// has non ASCII characters. I.e. it dosent matter if
// you call it with a domain that already is in ASCII.
var domainArray = this.hostname.split('.');
var newOut = [];
for (var i = 0; i < domainArray.length; ++i) {
var s = domainArray[i];
newOut.push(s.match(/[^A-Za-z0-9_-]/) ?
'xn--' + punycode.encode(s) : s);
}
this.hostname = newOut.join('.');
}
var p = this.port ? ':' + this.port : '';
var h = this.hostname || '';
this.host = h + p;
this.href += this.host;
// strip [ and ] from the hostname
// the host field still retains them, though
if (ipv6Hostname) {
this.hostname = this.hostname.substr(1, this.hostname.length - 2);
if (rest[0] !== '/') {
rest = '/' + rest;
}
}
}
// now rest is set to the post-host stuff.
// chop off any delim chars.
if (!unsafeProtocol[lowerProto]) {
// First, make 100% sure that any "autoEscape" chars get
// escaped, even if encodeURIComponent doesn't think they
// need to be.
for (var i = 0, l = autoEscape.length; i < l; i++) {
var ae = autoEscape[i];
var esc = encodeURIComponent(ae);
if (esc === ae) {
esc = escape(ae);
}
rest = rest.split(ae).join(esc);
}
}
// chop off from the tail first.
var hash = rest.indexOf('#');
if (hash !== -1) {
// got a fragment string.
this.hash = rest.substr(hash);
rest = rest.slice(0, hash);
}
var qm = rest.indexOf('?');
if (qm !== -1) {
this.search = rest.substr(qm);
this.query = rest.substr(qm + 1);
if (parseQueryString) {
this.query = querystring.parse(this.query);
}
rest = rest.slice(0, qm);
} else if (parseQueryString) {
// no query string, but parseQueryString still requested
this.search = '';
this.query = {};
}
if (rest) this.pathname = rest;
if (slashedProtocol[lowerProto] &&
this.hostname && !this.pathname) {
this.pathname = '/';
}
//to support http.request
if (this.pathname || this.search) {
var p = this.pathname || '';
var s = this.search || '';
this.path = p + s;
}
// finally, reconstruct the href based on what has been validated.
this.href = this.format();
return this;
};
// format a parsed object into a url string
function urlFormat(obj) {
// ensure it's an object, and not a string url.
// If it's an obj, this is a no-op.
// this way, you can call url_format() on strings
// to clean up potentially wonky urls.
if (isString(obj)) obj = urlParse(obj);
if (!(obj instanceof Url)) return Url.prototype.format.call(obj);
return obj.format();
}
Url.prototype.format = function() {
var auth = this.auth || '';
if (auth) {
auth = encodeURIComponent(auth);
auth = auth.replace(/%3A/i, ':');
auth += '@';
}
var protocol = this.protocol || '',
pathname = this.pathname || '',
hash = this.hash || '',
host = false,
query = '';
if (this.host) {
host = auth + this.host;
} else if (this.hostname) {
host = auth + (this.hostname.indexOf(':') === -1 ?
this.hostname :
'[' + this.hostname + ']');
if (this.port) {
host += ':' + this.port;
}
}
if (this.query &&
isObject(this.query) &&
Object.keys(this.query).length) {
query = querystring.stringify(this.query);
}
var search = this.search || (query && ('?' + query)) || '';
if (protocol && protocol.substr(-1) !== ':') protocol += ':';
// only the slashedProtocols get the //. Not mailto:, xmpp:, etc.
// unless they had them to begin with.
if (this.slashes ||
(!protocol || slashedProtocol[protocol]) && host !== false) {
host = '//' + (host || '');
if (pathname && pathname.charAt(0) !== '/') pathname = '/' + pathname;
} else if (!host) {
host = '';
}
if (hash && hash.charAt(0) !== '#') hash = '#' + hash;
if (search && search.charAt(0) !== '?') search = '?' + search;
pathname = pathname.replace(/[?#]/g, function(match) {
return encodeURIComponent(match);
});
search = search.replace('#', '%23');
return protocol + host + pathname + search + hash;
};
function urlResolve(source, relative) {
return urlParse(source, false, true).resolve(relative);
}
Url.prototype.resolve = function(relative) {
return this.resolveObject(urlParse(relative, false, true)).format();
};
function urlResolveObject(source, relative) {
if (!source) return relative;
return urlParse(source, false, true).resolveObject(relative);
}
Url.prototype.resolveObject = function(relative) {
if (isString(relative)) {
var rel = new Url();
rel.parse(relative, false, true);
relative = rel;
}
var result = new Url();
Object.keys(this).forEach(function(k) {
result[k] = this[k];
}, this);
// hash is always overridden, no matter what.
// even href="" will remove it.
result.hash = relative.hash;
// if the relative url is empty, then there's nothing left to do here.
if (relative.href === '') {
result.href = result.format();
return result;
}
// hrefs like //foo/bar always cut to the protocol.
if (relative.slashes && !relative.protocol) {
// take everything except the protocol from relative
Object.keys(relative).forEach(function(k) {
if (k !== 'protocol')
result[k] = relative[k];
});
//urlParse appends trailing / to urls like http://www.example.com
if (slashedProtocol[result.protocol] &&
result.hostname && !result.pathname) {
result.path = result.pathname = '/';
}
result.href = result.format();
return result;
}
if (relative.protocol && relative.protocol !== result.protocol) {
// if it's a known url protocol, then changing
// the protocol does weird things
// first, if it's not file:, then we MUST have a host,
// and if there was a path
// to begin with, then we MUST have a path.
// if it is file:, then the host is dropped,
// because that's known to be hostless.
// anything else is assumed to be absolute.
if (!slashedProtocol[relative.protocol]) {
Object.keys(relative).forEach(function(k) {
result[k] = relative[k];
});
result.href = result.format();
return result;
}
result.protocol = relative.protocol;
if (!relative.host && !hostlessProtocol[relative.protocol]) {
var relPath = (relative.pathname || '').split('/');
while (relPath.length && !(relative.host = relPath.shift()));
if (!relative.host) relative.host = '';
if (!relative.hostname) relative.hostname = '';
if (relPath[0] !== '') relPath.unshift('');
if (relPath.length < 2) relPath.unshift('');
result.pathname = relPath.join('/');
} else {
result.pathname = relative.pathname;
}
result.search = relative.search;
result.query = relative.query;
result.host = relative.host || '';
result.auth = relative.auth;
result.hostname = relative.hostname || relative.host;
result.port = relative.port;
// to support http.request
if (result.pathname || result.search) {
var p = result.pathname || '';
var s = result.search || '';
result.path = p + s;
}
result.slashes = result.slashes || relative.slashes;
result.href = result.format();
return result;
}
var isSourceAbs = (result.pathname && result.pathname.charAt(0) === '/'),
isRelAbs = (
relative.host ||
relative.pathname && relative.pathname.charAt(0) === '/'
),
mustEndAbs = (isRelAbs || isSourceAbs ||
(result.host && relative.pathname)),
removeAllDots = mustEndAbs,
srcPath = result.pathname && result.pathname.split('/') || [],
relPath = relative.pathname && relative.pathname.split('/') || [],
psychotic = result.protocol && !slashedProtocol[result.protocol];
// if the url is a non-slashed url, then relative
// links like ../.. should be able
// to crawl up to the hostname, as well. This is strange.
// result.protocol has already been set by now.
// Later on, put the first path part into the host field.
if (psychotic) {
result.hostname = '';
result.port = null;
if (result.host) {
if (srcPath[0] === '') srcPath[0] = result.host;
else srcPath.unshift(result.host);
}
result.host = '';
if (relative.protocol) {
relative.hostname = null;
relative.port = null;
if (relative.host) {
if (relPath[0] === '') relPath[0] = relative.host;
else relPath.unshift(relative.host);
}
relative.host = null;
}
mustEndAbs = mustEndAbs && (relPath[0] === '' || srcPath[0] === '');
}
if (isRelAbs) {
// it's absolute.
result.host = (relative.host || relative.host === '') ?
relative.host : result.host;
result.hostname = (relative.hostname || relative.hostname === '') ?
relative.hostname : result.hostname;
result.search = relative.search;
result.query = relative.query;
srcPath = relPath;
// fall through to the dot-handling below.
} else if (relPath.length) {
// it's relative
// throw away the existing file, and take the new path instead.
if (!srcPath) srcPath = [];
srcPath.pop();
srcPath = srcPath.concat(relPath);
result.search = relative.search;
result.query = relative.query;
} else if (!isNullOrUndefined(relative.search)) {
// just pull out the search.
// like href='?foo'.
// Put this after the other two cases because it simplifies the booleans
if (psychotic) {
result.hostname = result.host = srcPath.shift();
//occationaly the auth can get stuck only in host
//this especialy happens in cases like
//url.resolveObject('mailto:local1@domain1', 'local2@domain2')
var authInHost = result.host && result.host.indexOf('@') > 0 ?
result.host.split('@') : false;
if (authInHost) {
result.auth = authInHost.shift();
result.host = result.hostname = authInHost.shift();
}
}
result.search = relative.search;
result.query = relative.query;
//to support http.request
if (!isNull(result.pathname) || !isNull(result.search)) {
result.path = (result.pathname ? result.pathname : '') +
(result.search ? result.search : '');
}
result.href = result.format();
return result;
}
if (!srcPath.length) {
// no path at all. easy.
// we've already handled the other stuff above.
result.pathname = null;
//to support http.request
if (result.search) {
result.path = '/' + result.search;
} else {
result.path = null;
}
result.href = result.format();
return result;
}
// if a url ENDs in . or .., then it must get a trailing slash.
// however, if it ends in anything else non-slashy,
// then it must NOT get a trailing slash.
var last = srcPath.slice(-1)[0];
var hasTrailingSlash = (
(result.host || relative.host) && (last === '.' || last === '..') ||
last === '');
// strip single dots, resolve double dots to parent dir
// if the path tries to go above the root, `up` ends up > 0
var up = 0;
for (var i = srcPath.length; i >= 0; i--) {
last = srcPath[i];
if (last == '.') {
srcPath.splice(i, 1);
} else if (last === '..') {
srcPath.splice(i, 1);
up++;
} else if (up) {
srcPath.splice(i, 1);
up--;
}
}
// if the path is allowed to go above the root, restore leading ..s
if (!mustEndAbs && !removeAllDots) {
for (; up--; up) {
srcPath.unshift('..');
}
}
if (mustEndAbs && srcPath[0] !== '' &&
(!srcPath[0] || srcPath[0].charAt(0) !== '/')) {
srcPath.unshift('');
}
if (hasTrailingSlash && (srcPath.join('/').substr(-1) !== '/')) {
srcPath.push('');
}
var isAbsolute = srcPath[0] === '' ||
(srcPath[0] && srcPath[0].charAt(0) === '/');
// put the host back
if (psychotic) {
result.hostname = result.host = isAbsolute ? '' :
srcPath.length ? srcPath.shift() : '';
//occationaly the auth can get stuck only in host
//this especialy happens in cases like
//url.resolveObject('mailto:local1@domain1', 'local2@domain2')
var authInHost = result.host && result.host.indexOf('@') > 0 ?
result.host.split('@') : false;
if (authInHost) {
result.auth = authInHost.shift();
result.host = result.hostname = authInHost.shift();
}
}
mustEndAbs = mustEndAbs || (result.host && srcPath.length);
if (mustEndAbs && !isAbsolute) {
srcPath.unshift('');
}
if (!srcPath.length) {
result.pathname = null;
result.path = null;
} else {
result.pathname = srcPath.join('/');
}
//to support request.http
if (!isNull(result.pathname) || !isNull(result.search)) {
result.path = (result.pathname ? result.pathname : '') +
(result.search ? result.search : '');
}
result.auth = relative.auth || result.auth;
result.slashes = result.slashes || relative.slashes;
result.href = result.format();
return result;
};
Url.prototype.parseHost = function() {
var host = this.host;
var port = portPattern.exec(host);
if (port) {
port = port[0];
if (port !== ':') {
this.port = port.substr(1);
}
host = host.substr(0, host.length - port.length);
}
if (host) this.hostname = host;
};
function isString(arg) {
return typeof arg === "string";
}
function isObject(arg) {
return typeof arg === 'object' && arg !== null;
}
function isNull(arg) {
return arg === null;
}
function isNullOrUndefined(arg) {
return arg == null;
}
},{"punycode":14,"querystring":17}],27:[function(require,module,exports){
if (typeof Object.create === 'function') {
// implementation from standard node.js 'util' module
module.exports = function inherits(ctor, superCtor) {
ctor.super_ = superCtor
ctor.prototype = Object.create(superCtor.prototype, {
constructor: {
value: ctor,
enumerable: false,
writable: true,
configurable: true
}
});
};
} else {
// old school shim for old browsers
module.exports = function inherits(ctor, superCtor) {
ctor.super_ = superCtor
var TempCtor = function () {}
TempCtor.prototype = superCtor.prototype
ctor.prototype = new TempCtor()
ctor.prototype.constructor = ctor
}
}
},{}],28:[function(require,module,exports){
module.exports = function isBuffer(arg) {
return arg && typeof arg === 'object'
&& typeof arg.copy === 'function'
&& typeof arg.fill === 'function'
&& typeof arg.readUInt8 === 'function';
}
},{}],29:[function(require,module,exports){
(function (process,global){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
var formatRegExp = /%[sdj%]/g;
exports.format = function(f) {
if (!isString(f)) {
var objects = [];
for (var i = 0; i < arguments.length; i++) {
objects.push(inspect(arguments[i]));
}
return objects.join(' ');
}
var i = 1;
var args = arguments;
var len = args.length;
var str = String(f).replace(formatRegExp, function(x) {
if (x === '%%') return '%';
if (i >= len) return x;
switch (x) {
case '%s': return String(args[i++]);
case '%d': return Number(args[i++]);
case '%j':
try {
return JSON.stringify(args[i++]);
} catch (_) {
return '[Circular]';
}
default:
return x;
}
});
for (var x = args[i]; i < len; x = args[++i]) {
if (isNull(x) || !isObject(x)) {
str += ' ' + x;
} else {
str += ' ' + inspect(x);
}
}
return str;
};
// Mark that a method should not be used.
// Returns a modified function which warns once by default.
// If --no-deprecation is set, then it is a no-op.
exports.deprecate = function(fn, msg) {
// Allow for deprecating things in the process of starting up.
if (isUndefined(global.process)) {
return function() {
return exports.deprecate(fn, msg).apply(this, arguments);
};
}
if (process.noDeprecation === true) {
return fn;
}
var warned = false;
function deprecated() {
if (!warned) {
if (process.throwDeprecation) {
throw new Error(msg);
} else if (process.traceDeprecation) {
console.trace(msg);
} else {
console.error(msg);
}
warned = true;
}
return fn.apply(this, arguments);
}
return deprecated;
};
var debugs = {};
var debugEnviron;
exports.debuglog = function(set) {
if (isUndefined(debugEnviron))
debugEnviron = process.env.NODE_DEBUG || '';
set = set.toUpperCase();
if (!debugs[set]) {
if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
var pid = process.pid;
debugs[set] = function() {
var msg = exports.format.apply(exports, arguments);
console.error('%s %d: %s', set, pid, msg);
};
} else {
debugs[set] = function() {};
}
}
return debugs[set];
};
/**
* Echos the value of a value. Trys to print the value out
* in the best way possible given the different types.
*
* @param {Object} obj The object to print out.
* @param {Object} opts Optional options object that alters the output.
*/
/* legacy: obj, showHidden, depth, colors*/
function inspect(obj, opts) {
// default options
var ctx = {
seen: [],
stylize: stylizeNoColor
};
// legacy...
if (arguments.length >= 3) ctx.depth = arguments[2];
if (arguments.length >= 4) ctx.colors = arguments[3];
if (isBoolean(opts)) {
// legacy...
ctx.showHidden = opts;
} else if (opts) {
// got an "options" object
exports._extend(ctx, opts);
}
// set default options
if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
if (isUndefined(ctx.depth)) ctx.depth = 2;
if (isUndefined(ctx.colors)) ctx.colors = false;
if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
if (ctx.colors) ctx.stylize = stylizeWithColor;
return formatValue(ctx, obj, ctx.depth);
}
exports.inspect = inspect;
// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
inspect.colors = {
'bold' : [1, 22],
'italic' : [3, 23],
'underline' : [4, 24],
'inverse' : [7, 27],
'white' : [37, 39],
'grey' : [90, 39],
'black' : [30, 39],
'blue' : [34, 39],
'cyan' : [36, 39],
'green' : [32, 39],
'magenta' : [35, 39],
'red' : [31, 39],
'yellow' : [33, 39]
};
// Don't use 'blue' not visible on cmd.exe
inspect.styles = {
'special': 'cyan',
'number': 'yellow',
'boolean': 'yellow',
'undefined': 'grey',
'null': 'bold',
'string': 'green',
'date': 'magenta',
// "name": intentionally not styling
'regexp': 'red'
};
function stylizeWithColor(str, styleType) {
var style = inspect.styles[styleType];
if (style) {
return '\u001b[' + inspect.colors[style][0] + 'm' + str +
'\u001b[' + inspect.colors[style][1] + 'm';
} else {
return str;
}
}
function stylizeNoColor(str, styleType) {
return str;
}
function arrayToHash(array) {
var hash = {};
array.forEach(function(val, idx) {
hash[val] = true;
});
return hash;
}
function formatValue(ctx, value, recurseTimes) {
// Provide a hook for user-specified inspect functions.
// Check that value is an object with an inspect function on it
if (ctx.customInspect &&
value &&
isFunction(value.inspect) &&
// Filter out the util module, it's inspect function is special
value.inspect !== exports.inspect &&
// Also filter out any prototype objects using the circular check.
!(value.constructor && value.constructor.prototype === value)) {
var ret = value.inspect(recurseTimes, ctx);
if (!isString(ret)) {
ret = formatValue(ctx, ret, recurseTimes);
}
return ret;
}
// Primitive types cannot have properties
var primitive = formatPrimitive(ctx, value);
if (primitive) {
return primitive;
}
// Look up the keys of the object.
var keys = Object.keys(value);
var visibleKeys = arrayToHash(keys);
if (ctx.showHidden) {
keys = Object.getOwnPropertyNames(value);
}
// IE doesn't make error fields non-enumerable
// http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
if (isError(value)
&& (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
return formatError(value);
}
// Some type of object without properties can be shortcutted.
if (keys.length === 0) {
if (isFunction(value)) {
var name = value.name ? ': ' + value.name : '';
return ctx.stylize('[Function' + name + ']', 'special');
}
if (isRegExp(value)) {
return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
}
if (isDate(value)) {
return ctx.stylize(Date.prototype.toString.call(value), 'date');
}
if (isError(value)) {
return formatError(value);
}
}
var base = '', array = false, braces = ['{', '}'];
// Make Array say that they are Array
if (isArray(value)) {
array = true;
braces = ['[', ']'];
}
// Make functions say that they are functions
if (isFunction(value)) {
var n = value.name ? ': ' + value.name : '';
base = ' [Function' + n + ']';
}
// Make RegExps say that they are RegExps
if (isRegExp(value)) {
base = ' ' + RegExp.prototype.toString.call(value);
}
// Make dates with properties first say the date
if (isDate(value)) {
base = ' ' + Date.prototype.toUTCString.call(value);
}
// Make error with message first say the error
if (isError(value)) {
base = ' ' + formatError(value);
}
if (keys.length === 0 && (!array || value.length == 0)) {
return braces[0] + base + braces[1];
}
if (recurseTimes < 0) {
if (isRegExp(value)) {
return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
} else {
return ctx.stylize('[Object]', 'special');
}
}
ctx.seen.push(value);
var output;
if (array) {
output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
} else {
output = keys.map(function(key) {
return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
});
}
ctx.seen.pop();
return reduceToSingleString(output, base, braces);
}
function formatPrimitive(ctx, value) {
if (isUndefined(value))
return ctx.stylize('undefined', 'undefined');
if (isString(value)) {
var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
.replace(/'/g, "\\'")
.replace(/\\"/g, '"') + '\'';
return ctx.stylize(simple, 'string');
}
if (isNumber(value))
return ctx.stylize('' + value, 'number');
if (isBoolean(value))
return ctx.stylize('' + value, 'boolean');
// For some reason typeof null is "object", so special case here.
if (isNull(value))
return ctx.stylize('null', 'null');
}
function formatError(value) {
return '[' + Error.prototype.toString.call(value) + ']';
}
function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
var output = [];
for (var i = 0, l = value.length; i < l; ++i) {
if (hasOwnProperty(value, String(i))) {
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
String(i), true));
} else {
output.push('');
}
}
keys.forEach(function(key) {
if (!key.match(/^\d+$/)) {
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
key, true));
}
});
return output;
}
function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
var name, str, desc;
desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
if (desc.get) {
if (desc.set) {
str = ctx.stylize('[Getter/Setter]', 'special');
} else {
str = ctx.stylize('[Getter]', 'special');
}
} else {
if (desc.set) {
str = ctx.stylize('[Setter]', 'special');
}
}
if (!hasOwnProperty(visibleKeys, key)) {
name = '[' + key + ']';
}
if (!str) {
if (ctx.seen.indexOf(desc.value) < 0) {
if (isNull(recurseTimes)) {
str = formatValue(ctx, desc.value, null);
} else {
str = formatValue(ctx, desc.value, recurseTimes - 1);
}
if (str.indexOf('\n') > -1) {
if (array) {
str = str.split('\n').map(function(line) {
return ' ' + line;
}).join('\n').substr(2);
} else {
str = '\n' + str.split('\n').map(function(line) {
return ' ' + line;
}).join('\n');
}
}
} else {
str = ctx.stylize('[Circular]', 'special');
}
}
if (isUndefined(name)) {
if (array && key.match(/^\d+$/)) {
return str;
}
name = JSON.stringify('' + key);
if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
name = name.substr(1, name.length - 2);
name = ctx.stylize(name, 'name');
} else {
name = name.replace(/'/g, "\\'")
.replace(/\\"/g, '"')
.replace(/(^"|"$)/g, "'");
name = ctx.stylize(name, 'string');
}
}
return name + ': ' + str;
}
function reduceToSingleString(output, base, braces) {
var numLinesEst = 0;
var length = output.reduce(function(prev, cur) {
numLinesEst++;
if (cur.indexOf('\n') >= 0) numLinesEst++;
return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
}, 0);
if (length > 60) {
return braces[0] +
(base === '' ? '' : base + '\n ') +
' ' +
output.join(',\n ') +
' ' +
braces[1];
}
return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
}
// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(ar) {
return Array.isArray(ar);
}
exports.isArray = isArray;
function isBoolean(arg) {
return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;
function isNull(arg) {
return arg === null;
}
exports.isNull = isNull;
function isNullOrUndefined(arg) {
return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;
function isNumber(arg) {
return typeof arg === 'number';
}
exports.isNumber = isNumber;
function isString(arg) {
return typeof arg === 'string';
}
exports.isString = isString;
function isSymbol(arg) {
return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;
function isUndefined(arg) {
return arg === void 0;
}
exports.isUndefined = isUndefined;
function isRegExp(re) {
return isObject(re) && objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;
function isObject(arg) {
return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;
function isDate(d) {
return isObject(d) && objectToString(d) === '[object Date]';
}
exports.isDate = isDate;
function isError(e) {
return isObject(e) &&
(objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;
function isFunction(arg) {
return typeof arg === 'function';
}
exports.isFunction = isFunction;
function isPrimitive(arg) {
return arg === null ||
typeof arg === 'boolean' ||
typeof arg === 'number' ||
typeof arg === 'string' ||
typeof arg === 'symbol' || // ES6 symbol
typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;
exports.isBuffer = require('./support/isBuffer');
function objectToString(o) {
return Object.prototype.toString.call(o);
}
function pad(n) {
return n < 10 ? '0' + n.toString(10) : n.toString(10);
}
var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
'Oct', 'Nov', 'Dec'];
// 26 Feb 16:19:34
function timestamp() {
var d = new Date();
var time = [pad(d.getHours()),
pad(d.getMinutes()),
pad(d.getSeconds())].join(':');
return [d.getDate(), months[d.getMonth()], time].join(' ');
}
// log is just a thin wrapper to console.log that prepends a timestamp
exports.log = function() {
console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
};
/**
* Inherit the prototype methods from one constructor into another.
*
* The Function.prototype.inherits from lang.js rewritten as a standalone
* function (not on Function.prototype). NOTE: If this file is to be loaded
* during bootstrapping this function needs to be rewritten using some native
* functions as prototype setup using normal JavaScript does not work as
* expected during bootstrapping (see mirror.js in r114903).
*
* @param {function} ctor Constructor function which needs to inherit the
* prototype.
* @param {function} superCtor Constructor function to inherit prototype from.
*/
exports.inherits = require('inherits');
exports._extend = function(origin, add) {
// Don't do anything if add isn't an object
if (!add || !isObject(add)) return origin;
var keys = Object.keys(add);
var i = keys.length;
while (i--) {
origin[keys[i]] = add[keys[i]];
}
return origin;
};
function hasOwnProperty(obj, prop) {
return Object.prototype.hasOwnProperty.call(obj, prop);
}
}).call(this,require("g5I+bs"),typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./support/isBuffer":28,"g5I+bs":13,"inherits":27}],30:[function(require,module,exports){
var http = require('http');
var Stream = require('stream');
var encode = typeof encodeURIComponent !== 'undefined'
? encodeURIComponent : escape
;
module.exports = function (opts) {
if (typeof opts === 'string') {
opts = { path : opts };
}
if (!opts) opts = {};
if (!opts.id) {
opts.id = Math.floor(Math.pow(16, 8) * Math.random()).toString(16);
}
var stream = new Stream;
stream.writable = true;
stream.order = 0;
stream.write = function (msg) {
if (stream.ended) return;
var data = 'order=' + stream.order
+ '&data=' + encode(msg)
+ '&id=' + encode(opts.id)
;
stream.order ++;
send(data);
};
stream.destroy = function () {
stream.ended = true;
stream.emit('close');
};
stream.end = function (msg) {
if (stream.ended) return;
var data = 'order=' + stream.order
+ '&id=' + encode(opts.id)
+ '&end=true'
;
if (msg !== undefined) data += '&data=' + encode(msg);
stream.order ++;
send(data);
stream.ended = true;
stream.emit('close');
};
function send (data) {
var params = {
method : 'POST',
host : opts.host || window.location.hostname,
port : opts.port || window.location.port,
path : opts.path || '/',
headers : {
'content-type' : 'application/x-www-form-urlencoded'
}
};
var req = http.request(params);
req.end(data);
}
return stream
};
},{"http":6,"stream":19}]},{},[1])</script><script>(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
'use strict';
// modified from https://github.com/es-shims/es6-shim
var keys = require('object-keys');
var hasSymbols = require('has-symbols/shams')();
var callBound = require('call-bind/callBound');
var toObject = Object;
var $push = callBound('Array.prototype.push');
var $propIsEnumerable = callBound('Object.prototype.propertyIsEnumerable');
var originalGetSymbols = hasSymbols ? Object.getOwnPropertySymbols : null;
// eslint-disable-next-line no-unused-vars
module.exports = function assign(target, source1) {
if (target == null) { throw new TypeError('target must be an object'); }
var objTarget = toObject(target);
var s, source, i, props, syms, value, key;
for (s = 1; s < arguments.length; ++s) {
source = toObject(arguments[s]);
props = keys(source);
var getSymbols = hasSymbols && (Object.getOwnPropertySymbols || originalGetSymbols);
if (getSymbols) {
syms = getSymbols(source);
for (i = 0; i < syms.length; ++i) {
key = syms[i];
if ($propIsEnumerable(source, key)) {
$push(props, key);
}
}
}
for (i = 0; i < props.length; ++i) {
key = props[i];
value = source[key];
if ($propIsEnumerable(source, key)) {
objTarget[key] = value;
}
}
}
return objTarget;
};
},{"call-bind/callBound":11,"has-symbols/shams":43,"object-keys":71}],2:[function(require,module,exports){
'use strict';
var defineProperties = require('define-properties');
var callBind = require('call-bind');
var implementation = require('./implementation');
var getPolyfill = require('./polyfill');
var shim = require('./shim');
var polyfill = callBind.apply(getPolyfill());
// eslint-disable-next-line no-unused-vars
var bound = function assign(target, source1) {
return polyfill(Object, arguments);
};
defineProperties(bound, {
getPolyfill: getPolyfill,
implementation: implementation,
shim: shim
});
module.exports = bound;
},{"./implementation":1,"./polyfill":116,"./shim":117,"call-bind":12,"define-properties":16}],3:[function(require,module,exports){
'use strict';
var IsCallable = require('es-abstract/2021/IsCallable');
var ToObject = require('es-abstract/2021/ToObject');
var ToUint32 = require('es-abstract/2021/ToUint32');
var callBound = require('call-bind/callBound');
var isString = require('is-string');
// Check failure of by-index access of string characters (IE < 9) and failure of `0 in boxedString` (Rhino)
var boxedString = Object('a');
var splitString = boxedString[0] !== 'a' || !(0 in boxedString);
var $split = callBound('String.prototype.split');
module.exports = function every(callbackfn) {
var O = ToObject(this);
var self = splitString && isString(O) ? $split(O, '') : O;
var len = ToUint32(self.length);
var T;
if (arguments.length > 1) {
T = arguments[1];
}
// If no callback function or if callback is not a callable function
if (!IsCallable(callbackfn)) {
throw new TypeError('Array.prototype.every callback must be a function');
}
for (var i = 0; i < len; i++) {
if (i in self && !(typeof T === 'undefined' ? callbackfn(self[i], i, O) : callbackfn.call(T, self[i], i, O))) {
return false;
}
}
return true;
};
},{"call-bind/callBound":11,"es-abstract/2021/IsCallable":18,"es-abstract/2021/ToObject":21,"es-abstract/2021/ToUint32":24,"is-string":57}],4:[function(require,module,exports){
'use strict';
var define = require('define-properties');
var RequireObjectCoercible = require('es-abstract/2021/RequireObjectCoercible');
var callBound = require('call-bind/callBound');
var implementation = require('./implementation');
var getPolyfill = require('./polyfill');
var polyfill = getPolyfill();
var shim = require('./shim');
var $slice = callBound('Array.prototype.slice');
// eslint-disable-next-line no-unused-vars
var boundEveryShim = function every(array, callbackfn) {
RequireObjectCoercible(array);
return polyfill.apply(array, $slice(arguments, 1));
};
define(boundEveryShim, {
getPolyfill: getPolyfill,
implementation: implementation,
shim: shim
});
module.exports = boundEveryShim;
},{"./implementation":3,"./polyfill":5,"./shim":6,"call-bind/callBound":11,"define-properties":16,"es-abstract/2021/RequireObjectCoercible":19}],5:[function(require,module,exports){
var implementation = require('./implementation');
module.exports = function getPolyfill() {
if (typeof Array.prototype.every === 'function') {
var hasPrimitiveContextInStrict = [1].every(function () {
'use strict';
return typeof this === 'string' && this === 'x';
}, 'x');
if (hasPrimitiveContextInStrict) {
return Array.prototype.every;
}
}
return implementation;
};
},{"./implementation":3}],6:[function(require,module,exports){
'use strict';
var define = require('define-properties');
var getPolyfill = require('./polyfill');
module.exports = function shimArrayPrototypeEvery() {
var polyfill = getPolyfill();
define(
Array.prototype,
{ every: polyfill },
{ every: function () { return Array.prototype.every !== polyfill; } }
);
return polyfill;
};
},{"./polyfill":5,"define-properties":16}],7:[function(require,module,exports){
(function (global){(function (){
'use strict';
var possibleNames = [
'BigInt64Array',
'BigUint64Array',
'Float32Array',
'Float64Array',
'Int16Array',
'Int32Array',
'Int8Array',
'Uint16Array',
'Uint32Array',
'Uint8Array',
'Uint8ClampedArray'
];
var g = typeof globalThis === 'undefined' ? global : globalThis;
module.exports = function availableTypedArrays() {
var out = [];
for (var i = 0; i < possibleNames.length; i++) {
if (typeof g[possibleNames[i]] === 'function') {
out[out.length] = possibleNames[i];
}
}
return out;
};
}).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],8:[function(require,module,exports){
'use strict'
exports.byteLength = byteLength
exports.toByteArray = toByteArray
exports.fromByteArray = fromByteArray
var lookup = []
var revLookup = []
var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
for (var i = 0, len = code.length; i < len; ++i) {
lookup[i] = code[i]
revLookup[code.charCodeAt(i)] = i
}
// Support decoding URL-safe base64 strings, as Node.js does.
// See: https://en.wikipedia.org/wiki/Base64#URL_applications
revLookup['-'.charCodeAt(0)] = 62
revLookup['_'.charCodeAt(0)] = 63
function getLens (b64) {
var len = b64.length
if (len % 4 > 0) {
throw new Error('Invalid string. Length must be a multiple of 4')
}
// Trim off extra bytes after placeholder bytes are found
// See: https://github.com/beatgammit/base64-js/issues/42
var validLen = b64.indexOf('=')
if (validLen === -1) validLen = len
var placeHoldersLen = validLen === len
? 0
: 4 - (validLen % 4)
return [validLen, placeHoldersLen]
}
// base64 is 4/3 + up to two characters of the original data
function byteLength (b64) {
var lens = getLens(b64)
var validLen = lens[0]
var placeHoldersLen = lens[1]
return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}
function _byteLength (b64, validLen, placeHoldersLen) {
return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}
function toByteArray (b64) {
var tmp
var lens = getLens(b64)
var validLen = lens[0]
var placeHoldersLen = lens[1]
var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))
var curByte = 0
// if there are placeholders, only get up to the last complete 4 chars
var len = placeHoldersLen > 0
? validLen - 4
: validLen
var i
for (i = 0; i < len; i += 4) {
tmp =
(revLookup[b64.charCodeAt(i)] << 18) |
(revLookup[b64.charCodeAt(i + 1)] << 12) |
(revLookup[b64.charCodeAt(i + 2)] << 6) |
revLookup[b64.charCodeAt(i + 3)]
arr[curByte++] = (tmp >> 16) & 0xFF
arr[curByte++] = (tmp >> 8) & 0xFF
arr[curByte++] = tmp & 0xFF
}
if (placeHoldersLen === 2) {
tmp =
(revLookup[b64.charCodeAt(i)] << 2) |
(revLookup[b64.charCodeAt(i + 1)] >> 4)
arr[curByte++] = tmp & 0xFF
}
if (placeHoldersLen === 1) {
tmp =
(revLookup[b64.charCodeAt(i)] << 10) |
(revLookup[b64.charCodeAt(i + 1)] << 4) |
(revLookup[b64.charCodeAt(i + 2)] >> 2)
arr[curByte++] = (tmp >> 8) & 0xFF
arr[curByte++] = tmp & 0xFF
}
return arr
}
function tripletToBase64 (num) {
return lookup[num >> 18 & 0x3F] +
lookup[num >> 12 & 0x3F] +
lookup[num >> 6 & 0x3F] +
lookup[num & 0x3F]
}
function encodeChunk (uint8, start, end) {
var tmp
var output = []
for (var i = start; i < end; i += 3) {
tmp =
((uint8[i] << 16) & 0xFF0000) +
((uint8[i + 1] << 8) & 0xFF00) +
(uint8[i + 2] & 0xFF)
output.push(tripletToBase64(tmp))
}
return output.join('')
}
function fromByteArray (uint8) {
var tmp
var len = uint8.length
var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
var parts = []
var maxChunkLength = 16383 // must be multiple of 3
// go through the array every three bytes, we'll deal with trailing stuff later
for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
}
// pad the end with zeros, but make sure to not forget the extra bytes
if (extraBytes === 1) {
tmp = uint8[len - 1]
parts.push(
lookup[tmp >> 2] +
lookup[(tmp << 4) & 0x3F] +
'=='
)
} else if (extraBytes === 2) {
tmp = (uint8[len - 2] << 8) + uint8[len - 1]
parts.push(
lookup[tmp >> 10] +
lookup[(tmp >> 4) & 0x3F] +
lookup[(tmp << 2) & 0x3F] +
'='
)
}
return parts.join('')
}
},{}],9:[function(require,module,exports){
},{}],10:[function(require,module,exports){
(function (Buffer){(function (){
/*!
* The buffer module from node.js, for the browser.
*
* @author Feross Aboukhadijeh <https://feross.org>
* @license MIT
*/
/* eslint-disable no-proto */
'use strict'
var base64 = require('base64-js')
var ieee754 = require('ieee754')
exports.Buffer = Buffer
exports.SlowBuffer = SlowBuffer
exports.INSPECT_MAX_BYTES = 50
var K_MAX_LENGTH = 0x7fffffff
exports.kMaxLength = K_MAX_LENGTH
/**
* If `Buffer.TYPED_ARRAY_SUPPORT`:
* === true Use Uint8Array implementation (fastest)
* === false Print warning and recommend using `buffer` v4.x which has an Object
* implementation (most compatible, even IE6)
*
* Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
* Opera 11.6+, iOS 4.2+.
*
* We report that the browser does not support typed arrays if the are not subclassable
* using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`
* (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support
* for __proto__ and has a buggy typed array implementation.
*/
Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport()
if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' &&
typeof console.error === 'function') {
console.error(
'This browser lacks typed array (Uint8Array) support which is required by ' +
'`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'
)
}
function typedArraySupport () {
// Can typed array instances can be augmented?
try {
var arr = new Uint8Array(1)
arr.__proto__ = { __proto__: Uint8Array.prototype, foo: function () { return 42 } }
return arr.foo() === 42
} catch (e) {
return false
}
}
Object.defineProperty(Buffer.prototype, 'parent', {
enumerable: true,
get: function () {
if (!Buffer.isBuffer(this)) return undefined
return this.buffer
}
})
Object.defineProperty(Buffer.prototype, 'offset', {
enumerable: true,
get: function () {
if (!Buffer.isBuffer(this)) return undefined
return this.byteOffset
}
})
function createBuffer (length) {
if (length > K_MAX_LENGTH) {
throw new RangeError('The value "' + length + '" is invalid for option "size"')
}
// Return an augmented `Uint8Array` instance
var buf = new Uint8Array(length)
buf.__proto__ = Buffer.prototype
return buf
}
/**
* The Buffer constructor returns instances of `Uint8Array` that have their
* prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
* `Uint8Array`, so the returned instances will have all the node `Buffer` methods
* and the `Uint8Array` methods. Square bracket notation works as expected -- it
* returns a single octet.
*
* The `Uint8Array` prototype remains unmodified.
*/
function Buffer (arg, encodingOrOffset, length) {
// Common case.
if (typeof arg === 'number') {
if (typeof encodingOrOffset === 'string') {
throw new TypeError(
'The "string" argument must be of type string. Received type number'
)
}
return allocUnsafe(arg)
}
return from(arg, encodingOrOffset, length)
}
// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
if (typeof Symbol !== 'undefined' && Symbol.species != null &&
Buffer[Symbol.species] === Buffer) {
Object.defineProperty(Buffer, Symbol.species, {
value: null,
configurable: true,
enumerable: false,
writable: false
})
}
Buffer.poolSize = 8192 // not used by this implementation
function from (value, encodingOrOffset, length) {
if (typeof value === 'string') {
return fromString(value, encodingOrOffset)
}
if (ArrayBuffer.isView(value)) {
return fromArrayLike(value)
}
if (value == null) {
throw TypeError(
'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
'or Array-like Object. Received type ' + (typeof value)
)
}
if (isInstance(value, ArrayBuffer) ||
(value && isInstance(value.buffer, ArrayBuffer))) {
return fromArrayBuffer(value, encodingOrOffset, length)
}
if (typeof value === 'number') {
throw new TypeError(
'The "value" argument must not be of type number. Received type number'
)
}
var valueOf = value.valueOf && value.valueOf()
if (valueOf != null && valueOf !== value) {
return Buffer.from(valueOf, encodingOrOffset, length)
}
var b = fromObject(value)
if (b) return b
if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null &&
typeof value[Symbol.toPrimitive] === 'function') {
return Buffer.from(
value[Symbol.toPrimitive]('string'), encodingOrOffset, length
)
}
throw new TypeError(
'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
'or Array-like Object. Received type ' + (typeof value)
)
}
/**
* Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
* if value is a number.
* Buffer.from(str[, encoding])
* Buffer.from(array)
* Buffer.from(buffer)
* Buffer.from(arrayBuffer[, byteOffset[, length]])
**/
Buffer.from = function (value, encodingOrOffset, length) {
return from(value, encodingOrOffset, length)
}
// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:
// https://github.com/feross/buffer/pull/148
Buffer.prototype.__proto__ = Uint8Array.prototype
Buffer.__proto__ = Uint8Array
function assertSize (size) {
if (typeof size !== 'number') {
throw new TypeError('"size" argument must be of type number')
} else if (size < 0) {
throw new RangeError('The value "' + size + '" is invalid for option "size"')
}
}
function alloc (size, fill, encoding) {
assertSize(size)
if (size <= 0) {
return createBuffer(size)
}
if (fill !== undefined) {
// Only pay attention to encoding if it's a string. This
// prevents accidentally sending in a number that would
// be interpretted as a start offset.
return typeof encoding === 'string'
? createBuffer(size).fill(fill, encoding)
: createBuffer(size).fill(fill)
}
return createBuffer(size)
}
/**
* Creates a new filled Buffer instance.
* alloc(size[, fill[, encoding]])
**/
Buffer.alloc = function (size, fill, encoding) {
return alloc(size, fill, encoding)
}
function allocUnsafe (size) {
assertSize(size)
return createBuffer(size < 0 ? 0 : checked(size) | 0)
}
/**
* Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
* */
Buffer.allocUnsafe = function (size) {
return allocUnsafe(size)
}
/**
* Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
*/
Buffer.allocUnsafeSlow = function (size) {
return allocUnsafe(size)
}
function fromString (string, encoding) {
if (typeof encoding !== 'string' || encoding === '') {
encoding = 'utf8'
}
if (!Buffer.isEncoding(encoding)) {
throw new TypeError('Unknown encoding: ' + encoding)
}
var length = byteLength(string, encoding) | 0
var buf = createBuffer(length)
var actual = buf.write(string, encoding)
if (actual !== length) {
// Writing a hex string, for example, that contains invalid characters will
// cause everything after the first invalid character to be ignored. (e.g.
// 'abxxcd' will be treated as 'ab')
buf = buf.slice(0, actual)
}
return buf
}
function fromArrayLike (array) {
var length = array.length < 0 ? 0 : checked(array.length) | 0
var buf = createBuffer(length)
for (var i = 0; i < length; i += 1) {
buf[i] = array[i] & 255
}
return buf
}
function fromArrayBuffer (array, byteOffset, length) {
if (byteOffset < 0 || array.byteLength < byteOffset) {
throw new RangeError('"offset" is outside of buffer bounds')
}
if (array.byteLength < byteOffset + (length || 0)) {
throw new RangeError('"length" is outside of buffer bounds')
}
var buf
if (byteOffset === undefined && length === undefined) {
buf = new Uint8Array(array)
} else if (length === undefined) {
buf = new Uint8Array(array, byteOffset)
} else {
buf = new Uint8Array(array, byteOffset, length)
}
// Return an augmented `Uint8Array` instance
buf.__proto__ = Buffer.prototype
return buf
}
function fromObject (obj) {
if (Buffer.isBuffer(obj)) {
var len = checked(obj.length) | 0
var buf = createBuffer(len)
if (buf.length === 0) {
return buf
}
obj.copy(buf, 0, 0, len)
return buf
}
if (obj.length !== undefined) {
if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {
return createBuffer(0)
}
return fromArrayLike(obj)
}
if (obj.type === 'Buffer' && Array.isArray(obj.data)) {
return fromArrayLike(obj.data)
}
}
function checked (length) {
// Note: cannot use `length < K_MAX_LENGTH` here because that fails when
// length is NaN (which is otherwise coerced to zero.)
if (length >= K_MAX_LENGTH) {
throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes')
}
return length | 0
}
function SlowBuffer (length) {
if (+length != length) { // eslint-disable-line eqeqeq
length = 0
}
return Buffer.alloc(+length)
}
Buffer.isBuffer = function isBuffer (b) {
return b != null && b._isBuffer === true &&
b !== Buffer.prototype // so Buffer.isBuffer(Buffer.prototype) will be false
}
Buffer.compare = function compare (a, b) {
if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength)
if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength)
if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
throw new TypeError(
'The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array'
)
}
if (a === b) return 0
var x = a.length
var y = b.length
for (var i = 0, len = Math.min(x, y); i < len; ++i) {
if (a[i] !== b[i]) {
x = a[i]
y = b[i]
break
}
}
if (x < y) return -1
if (y < x) return 1
return 0
}
Buffer.isEncoding = function isEncoding (encoding) {
switch (String(encoding).toLowerCase()) {
case 'hex':
case 'utf8':
case 'utf-8':
case 'ascii':
case 'latin1':
case 'binary':
case 'base64':
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return true
default:
return false
}
}
Buffer.concat = function concat (list, length) {
if (!Array.isArray(list)) {
throw new TypeError('"list" argument must be an Array of Buffers')
}
if (list.length === 0) {
return Buffer.alloc(0)
}
var i
if (length === undefined) {
length = 0
for (i = 0; i < list.length; ++i) {
length += list[i].length
}
}
var buffer = Buffer.allocUnsafe(length)
var pos = 0
for (i = 0; i < list.length; ++i) {
var buf = list[i]
if (isInstance(buf, Uint8Array)) {
buf = Buffer.from(buf)
}
if (!Buffer.isBuffer(buf)) {
throw new TypeError('"list" argument must be an Array of Buffers')
}
buf.copy(buffer, pos)
pos += buf.length
}
return buffer
}
function byteLength (string, encoding) {
if (Buffer.isBuffer(string)) {
return string.length
}
if (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) {
return string.byteLength
}
if (typeof string !== 'string') {
throw new TypeError(
'The "string" argument must be one of type string, Buffer, or ArrayBuffer. ' +
'Received type ' + typeof string
)
}
var len = string.length
var mustMatch = (arguments.length > 2 && arguments[2] === true)
if (!mustMatch && len === 0) return 0
// Use a for loop to avoid recursion
var loweredCase = false
for (;;) {
switch (encoding) {
case 'ascii':
case 'latin1':
case 'binary':
return len
case 'utf8':
case 'utf-8':
return utf8ToBytes(string).length
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return len * 2
case 'hex':
return len >>> 1
case 'base64':
return base64ToBytes(string).length
default:
if (loweredCase) {
return mustMatch ? -1 : utf8ToBytes(string).length // assume utf8
}
encoding = ('' + encoding).toLowerCase()
loweredCase = true
}
}
}
Buffer.byteLength = byteLength
function slowToString (encoding, start, end) {
var loweredCase = false
// No need to verify that "this.length <= MAX_UINT32" since it's a read-only
// property of a typed array.
// This behaves neither like String nor Uint8Array in that we set start/end
// to their upper/lower bounds if the value passed is out of range.
// undefined is handled specially as per ECMA-262 6th Edition,
// Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
if (start === undefined || start < 0) {
start = 0
}
// Return early if start > this.length. Done here to prevent potential uint32
// coercion fail below.
if (start > this.length) {
return ''
}
if (end === undefined || end > this.length) {
end = this.length
}
if (end <= 0) {
return ''
}
// Force coersion to uint32. This will also coerce falsey/NaN values to 0.
end >>>= 0
start >>>= 0
if (end <= start) {
return ''
}
if (!encoding) encoding = 'utf8'
while (true) {
switch (encoding) {
case 'hex':
return hexSlice(this, start, end)
case 'utf8':
case 'utf-8':
return utf8Slice(this, start, end)
case 'ascii':
return asciiSlice(this, start, end)
case 'latin1':
case 'binary':
return latin1Slice(this, start, end)
case 'base64':
return base64Slice(this, start, end)
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return utf16leSlice(this, start, end)
default:
if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
encoding = (encoding + '').toLowerCase()
loweredCase = true
}
}
}
// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)
// to detect a Buffer instance. It's not possible to use `instanceof Buffer`
// reliably in a browserify context because there could be multiple different
// copies of the 'buffer' package in use. This method works even for Buffer
// instances that were created from another copy of the `buffer` package.
// See: https://github.com/feross/buffer/issues/154
Buffer.prototype._isBuffer = true
function swap (b, n, m) {
var i = b[n]
b[n] = b[m]
b[m] = i
}
Buffer.prototype.swap16 = function swap16 () {
var len = this.length
if (len % 2 !== 0) {
throw new RangeError('Buffer size must be a multiple of 16-bits')
}
for (var i = 0; i < len; i += 2) {
swap(this, i, i + 1)
}
return this
}
Buffer.prototype.swap32 = function swap32 () {
var len = this.length
if (len % 4 !== 0) {
throw new RangeError('Buffer size must be a multiple of 32-bits')
}
for (var i = 0; i < len; i += 4) {
swap(this, i, i + 3)
swap(this, i + 1, i + 2)
}
return this
}
Buffer.prototype.swap64 = function swap64 () {
var len = this.length
if (len % 8 !== 0) {
throw new RangeError('Buffer size must be a multiple of 64-bits')
}
for (var i = 0; i < len; i += 8) {
swap(this, i, i + 7)
swap(this, i + 1, i + 6)
swap(this, i + 2, i + 5)
swap(this, i + 3, i + 4)
}
return this
}
Buffer.prototype.toString = function toString () {
var length = this.length
if (length === 0) return ''
if (arguments.length === 0) return utf8Slice(this, 0, length)
return slowToString.apply(this, arguments)
}
Buffer.prototype.toLocaleString = Buffer.prototype.toString
Buffer.prototype.equals = function equals (b) {
if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
if (this === b) return true
return Buffer.compare(this, b) === 0
}
Buffer.prototype.inspect = function inspect () {
var str = ''
var max = exports.INSPECT_MAX_BYTES
str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim()
if (this.length > max) str += ' ... '
return '<Buffer ' + str + '>'
}
Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
if (isInstance(target, Uint8Array)) {
target = Buffer.from(target, target.offset, target.byteLength)
}
if (!Buffer.isBuffer(target)) {
throw new TypeError(
'The "target" argument must be one of type Buffer or Uint8Array. ' +
'Received type ' + (typeof target)
)
}
if (start === undefined) {
start = 0
}
if (end === undefined) {
end = target ? target.length : 0
}
if (thisStart === undefined) {
thisStart = 0
}
if (thisEnd === undefined) {
thisEnd = this.length
}
if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
throw new RangeError('out of range index')
}
if (thisStart >= thisEnd && start >= end) {
return 0
}
if (thisStart >= thisEnd) {
return -1
}
if (start >= end) {
return 1
}
start >>>= 0
end >>>= 0
thisStart >>>= 0
thisEnd >>>= 0
if (this === target) return 0
var x = thisEnd - thisStart
var y = end - start
var len = Math.min(x, y)
var thisCopy = this.slice(thisStart, thisEnd)
var targetCopy = target.slice(start, end)
for (var i = 0; i < len; ++i) {
if (thisCopy[i] !== targetCopy[i]) {
x = thisCopy[i]
y = targetCopy[i]
break
}
}
if (x < y) return -1
if (y < x) return 1
return 0
}
// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
//
// Arguments:
// - buffer - a Buffer to search
// - val - a string, Buffer, or number
// - byteOffset - an index into `buffer`; will be clamped to an int32
// - encoding - an optional encoding, relevant is val is a string
// - dir - true for indexOf, false for lastIndexOf
function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
// Empty buffer means no match
if (buffer.length === 0) return -1
// Normalize byteOffset
if (typeof byteOffset === 'string') {
encoding = byteOffset
byteOffset = 0
} else if (byteOffset > 0x7fffffff) {
byteOffset = 0x7fffffff
} else if (byteOffset < -0x80000000) {
byteOffset = -0x80000000
}
byteOffset = +byteOffset // Coerce to Number.
if (numberIsNaN(byteOffset)) {
// byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
byteOffset = dir ? 0 : (buffer.length - 1)
}
// Normalize byteOffset: negative offsets start from the end of the buffer
if (byteOffset < 0) byteOffset = buffer.length + byteOffset
if (byteOffset >= buffer.length) {
if (dir) return -1
else byteOffset = buffer.length - 1
} else if (byteOffset < 0) {
if (dir) byteOffset = 0
else return -1
}
// Normalize val
if (typeof val === 'string') {
val = Buffer.from(val, encoding)
}
// Finally, search either indexOf (if dir is true) or lastIndexOf
if (Buffer.isBuffer(val)) {
// Special case: looking for empty string/buffer always fails
if (val.length === 0) {
return -1
}
return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
} else if (typeof val === 'number') {
val = val & 0xFF // Search for a byte value [0-255]
if (typeof Uint8Array.prototype.indexOf === 'function') {
if (dir) {
return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
} else {
return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
}
}
return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
}
throw new TypeError('val must be string, number or Buffer')
}
function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
var indexSize = 1
var arrLength = arr.length
var valLength = val.length
if (encoding !== undefined) {
encoding = String(encoding).toLowerCase()
if (encoding === 'ucs2' || encoding === 'ucs-2' ||
encoding === 'utf16le' || encoding === 'utf-16le') {
if (arr.length < 2 || val.length < 2) {
return -1
}
indexSize = 2
arrLength /= 2
valLength /= 2
byteOffset /= 2
}
}
function read (buf, i) {
if (indexSize === 1) {
return buf[i]
} else {
return buf.readUInt16BE(i * indexSize)
}
}
var i
if (dir) {
var foundIndex = -1
for (i = byteOffset; i < arrLength; i++) {
if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
if (foundIndex === -1) foundIndex = i
if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
} else {
if (foundIndex !== -1) i -= i - foundIndex
foundIndex = -1
}
}
} else {
if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
for (i = byteOffset; i >= 0; i--) {
var found = true
for (var j = 0; j < valLength; j++) {
if (read(arr, i + j) !== read(val, j)) {
found = false
break
}
}
if (found) return i
}
}
return -1
}
Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
return this.indexOf(val, byteOffset, encoding) !== -1
}
Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
}
Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
}
function hexWrite (buf, string, offset, length) {
offset = Number(offset) || 0
var remaining = buf.length - offset
if (!length) {
length = remaining
} else {
length = Number(length)
if (length > remaining) {
length = remaining
}
}
var strLen = string.length
if (length > strLen / 2) {
length = strLen / 2
}
for (var i = 0; i < length; ++i) {
var parsed = parseInt(string.substr(i * 2, 2), 16)
if (numberIsNaN(parsed)) return i
buf[offset + i] = parsed
}
return i
}
function utf8Write (buf, string, offset, length) {
return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
}
function asciiWrite (buf, string, offset, length) {
return blitBuffer(asciiToBytes(string), buf, offset, length)
}
function latin1Write (buf, string, offset, length) {
return asciiWrite(buf, string, offset, length)
}
function base64Write (buf, string, offset, length) {
return blitBuffer(base64ToBytes(string), buf, offset, length)
}
function ucs2Write (buf, string, offset, length) {
return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
}
Buffer.prototype.write = function write (string, offset, length, encoding) {
// Buffer#write(string)
if (offset === undefined) {
encoding = 'utf8'
length = this.length
offset = 0
// Buffer#write(string, encoding)
} else if (length === undefined && typeof offset === 'string') {
encoding = offset
length = this.length
offset = 0
// Buffer#write(string, offset[, length][, encoding])
} else if (isFinite(offset)) {
offset = offset >>> 0
if (isFinite(length)) {
length = length >>> 0
if (encoding === undefined) encoding = 'utf8'
} else {
encoding = length
length = undefined
}
} else {
throw new Error(
'Buffer.write(string, encoding, offset[, length]) is no longer supported'
)
}
var remaining = this.length - offset
if (length === undefined || length > remaining) length = remaining
if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
throw new RangeError('Attempt to write outside buffer bounds')
}
if (!encoding) encoding = 'utf8'
var loweredCase = false
for (;;) {
switch (encoding) {
case 'hex':
return hexWrite(this, string, offset, length)
case 'utf8':
case 'utf-8':
return utf8Write(this, string, offset, length)
case 'ascii':
return asciiWrite(this, string, offset, length)
case 'latin1':
case 'binary':
return latin1Write(this, string, offset, length)
case 'base64':
// Warning: maxLength not taken into account in base64Write
return base64Write(this, string, offset, length)
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return ucs2Write(this, string, offset, length)
default:
if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
encoding = ('' + encoding).toLowerCase()
loweredCase = true
}
}
}
Buffer.prototype.toJSON = function toJSON () {
return {
type: 'Buffer',
data: Array.prototype.slice.call(this._arr || this, 0)
}
}
function base64Slice (buf, start, end) {
if (start === 0 && end === buf.length) {
return base64.fromByteArray(buf)
} else {
return base64.fromByteArray(buf.slice(start, end))
}
}
function utf8Slice (buf, start, end) {
end = Math.min(buf.length, end)
var res = []
var i = start
while (i < end) {
var firstByte = buf[i]
var codePoint = null
var bytesPerSequence = (firstByte > 0xEF) ? 4
: (firstByte > 0xDF) ? 3
: (firstByte > 0xBF) ? 2
: 1
if (i + bytesPerSequence <= end) {
var secondByte, thirdByte, fourthByte, tempCodePoint
switch (bytesPerSequence) {
case 1:
if (firstByte < 0x80) {
codePoint = firstByte
}
break
case 2:
secondByte = buf[i + 1]
if ((secondByte & 0xC0) === 0x80) {
tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
if (tempCodePoint > 0x7F) {
codePoint = tempCodePoint
}
}
break
case 3:
secondByte = buf[i + 1]
thirdByte = buf[i + 2]
if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
codePoint = tempCodePoint
}
}
break
case 4:
secondByte = buf[i + 1]
thirdByte = buf[i + 2]
fourthByte = buf[i + 3]
if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
codePoint = tempCodePoint
}
}
}
}
if (codePoint === null) {
// we did not generate a valid codePoint so insert a
// replacement char (U+FFFD) and advance only 1 byte
codePoint = 0xFFFD
bytesPerSequence = 1
} else if (codePoint > 0xFFFF) {
// encode to utf16 (surrogate pair dance)
codePoint -= 0x10000
res.push(codePoint >>> 10 & 0x3FF | 0xD800)
codePoint = 0xDC00 | codePoint & 0x3FF
}
res.push(codePoint)
i += bytesPerSequence
}
return decodeCodePointsArray(res)
}
// Based on http://stackoverflow.com/a/22747272/680742, the browser with
// the lowest limit is Chrome, with 0x10000 args.
// We go 1 magnitude less, for safety
var MAX_ARGUMENTS_LENGTH = 0x1000
function decodeCodePointsArray (codePoints) {
var len = codePoints.length
if (len <= MAX_ARGUMENTS_LENGTH) {
return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
}
// Decode in chunks to avoid "call stack size exceeded".
var res = ''
var i = 0
while (i < len) {
res += String.fromCharCode.apply(
String,
codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
)
}
return res
}
function asciiSlice (buf, start, end) {
var ret = ''
end = Math.min(buf.length, end)
for (var i = start; i < end; ++i) {
ret += String.fromCharCode(buf[i] & 0x7F)
}
return ret
}
function latin1Slice (buf, start, end) {
var ret = ''
end = Math.min(buf.length, end)
for (var i = start; i < end; ++i) {
ret += String.fromCharCode(buf[i])
}
return ret
}
function hexSlice (buf, start, end) {
var len = buf.length
if (!start || start < 0) start = 0
if (!end || end < 0 || end > len) end = len
var out = ''
for (var i = start; i < end; ++i) {
out += toHex(buf[i])
}
return out
}
function utf16leSlice (buf, start, end) {
var bytes = buf.slice(start, end)
var res = ''
for (var i = 0; i < bytes.length; i += 2) {
res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256))
}
return res
}
Buffer.prototype.slice = function slice (start, end) {
var len = this.length
start = ~~start
end = end === undefined ? len : ~~end
if (start < 0) {
start += len
if (start < 0) start = 0
} else if (start > len) {
start = len
}
if (end < 0) {
end += len
if (end < 0) end = 0
} else if (end > len) {
end = len
}
if (end < start) end = start
var newBuf = this.subarray(start, end)
// Return an augmented `Uint8Array` instance
newBuf.__proto__ = Buffer.prototype
return newBuf
}
/*
* Need to make sure that buffer isn't trying to write out of bounds.
*/
function checkOffset (offset, ext, length) {
if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
}
Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
offset = offset >>> 0
byteLength = byteLength >>> 0
if (!noAssert) checkOffset(offset, byteLength, this.length)
var val = this[offset]
var mul = 1
var i = 0
while (++i < byteLength && (mul *= 0x100)) {
val += this[offset + i] * mul
}
return val
}
Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
offset = offset >>> 0
byteLength = byteLength >>> 0
if (!noAssert) {
checkOffset(offset, byteLength, this.length)
}
var val = this[offset + --byteLength]
var mul = 1
while (byteLength > 0 && (mul *= 0x100)) {
val += this[offset + --byteLength] * mul
}
return val
}
Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 1, this.length)
return this[offset]
}
Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 2, this.length)
return this[offset] | (this[offset + 1] << 8)
}
Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 2, this.length)
return (this[offset] << 8) | this[offset + 1]
}
Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return ((this[offset]) |
(this[offset + 1] << 8) |
(this[offset + 2] << 16)) +
(this[offset + 3] * 0x1000000)
}
Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return (this[offset] * 0x1000000) +
((this[offset + 1] << 16) |
(this[offset + 2] << 8) |
this[offset + 3])
}
Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
offset = offset >>> 0
byteLength = byteLength >>> 0
if (!noAssert) checkOffset(offset, byteLength, this.length)
var val = this[offset]
var mul = 1
var i = 0
while (++i < byteLength && (mul *= 0x100)) {
val += this[offset + i] * mul
}
mul *= 0x80
if (val >= mul) val -= Math.pow(2, 8 * byteLength)
return val
}
Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
offset = offset >>> 0
byteLength = byteLength >>> 0
if (!noAssert) checkOffset(offset, byteLength, this.length)
var i = byteLength
var mul = 1
var val = this[offset + --i]
while (i > 0 && (mul *= 0x100)) {
val += this[offset + --i] * mul
}
mul *= 0x80
if (val >= mul) val -= Math.pow(2, 8 * byteLength)
return val
}
Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 1, this.length)
if (!(this[offset] & 0x80)) return (this[offset])
return ((0xff - this[offset] + 1) * -1)
}
Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 2, this.length)
var val = this[offset] | (this[offset + 1] << 8)
return (val & 0x8000) ? val | 0xFFFF0000 : val
}
Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 2, this.length)
var val = this[offset + 1] | (this[offset] << 8)
return (val & 0x8000) ? val | 0xFFFF0000 : val
}
Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return (this[offset]) |
(this[offset + 1] << 8) |
(this[offset + 2] << 16) |
(this[offset + 3] << 24)
}
Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return (this[offset] << 24) |
(this[offset + 1] << 16) |
(this[offset + 2] << 8) |
(this[offset + 3])
}
Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return ieee754.read(this, offset, true, 23, 4)
}
Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return ieee754.read(this, offset, false, 23, 4)
}
Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 8, this.length)
return ieee754.read(this, offset, true, 52, 8)
}
Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 8, this.length)
return ieee754.read(this, offset, false, 52, 8)
}
function checkInt (buf, value, offset, ext, max, min) {
if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
if (offset + ext > buf.length) throw new RangeError('Index out of range')
}
Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
value = +value
offset = offset >>> 0
byteLength = byteLength >>> 0
if (!noAssert) {
var maxBytes = Math.pow(2, 8 * byteLength) - 1
checkInt(this, value, offset, byteLength, maxBytes, 0)
}
var mul = 1
var i = 0
this[offset] = value & 0xFF
while (++i < byteLength && (mul *= 0x100)) {
this[offset + i] = (value / mul) & 0xFF
}
return offset + byteLength
}
Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
value = +value
offset = offset >>> 0
byteLength = byteLength >>> 0
if (!noAssert) {
var maxBytes = Math.pow(2, 8 * byteLength) - 1
checkInt(this, value, offset, byteLength, maxBytes, 0)
}
var i = byteLength - 1
var mul = 1
this[offset + i] = value & 0xFF
while (--i >= 0 && (mul *= 0x100)) {
this[offset + i] = (value / mul) & 0xFF
}
return offset + byteLength
}
Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
this[offset] = (value & 0xff)
return offset + 1
}
Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
this[offset] = (value & 0xff)
this[offset + 1] = (value >>> 8)
return offset + 2
}
Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
this[offset] = (value >>> 8)
this[offset + 1] = (value & 0xff)
return offset + 2
}
Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
this[offset + 3] = (value >>> 24)
this[offset + 2] = (value >>> 16)
this[offset + 1] = (value >>> 8)
this[offset] = (value & 0xff)
return offset + 4
}
Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
this[offset] = (value >>> 24)
this[offset + 1] = (value >>> 16)
this[offset + 2] = (value >>> 8)
this[offset + 3] = (value & 0xff)
return offset + 4
}
Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) {
var limit = Math.pow(2, (8 * byteLength) - 1)
checkInt(this, value, offset, byteLength, limit - 1, -limit)
}
var i = 0
var mul = 1
var sub = 0
this[offset] = value & 0xFF
while (++i < byteLength && (mul *= 0x100)) {
if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
sub = 1
}
this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
}
return offset + byteLength
}
Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) {
var limit = Math.pow(2, (8 * byteLength) - 1)
checkInt(this, value, offset, byteLength, limit - 1, -limit)
}
var i = byteLength - 1
var mul = 1
var sub = 0
this[offset + i] = value & 0xFF
while (--i >= 0 && (mul *= 0x100)) {
if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
sub = 1
}
this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
}
return offset + byteLength
}
Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
if (value < 0) value = 0xff + value + 1
this[offset] = (value & 0xff)
return offset + 1
}
Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
this[offset] = (value & 0xff)
this[offset + 1] = (value >>> 8)
return offset + 2
}
Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
this[offset] = (value >>> 8)
this[offset + 1] = (value & 0xff)
return offset + 2
}
Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
this[offset] = (value & 0xff)
this[offset + 1] = (value >>> 8)
this[offset + 2] = (value >>> 16)
this[offset + 3] = (value >>> 24)
return offset + 4
}
Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
if (value < 0) value = 0xffffffff + value + 1
this[offset] = (value >>> 24)
this[offset + 1] = (value >>> 16)
this[offset + 2] = (value >>> 8)
this[offset + 3] = (value & 0xff)
return offset + 4
}
function checkIEEE754 (buf, value, offset, ext, max, min) {
if (offset + ext > buf.length) throw new RangeError('Index out of range')
if (offset < 0) throw new RangeError('Index out of range')
}
function writeFloat (buf, value, offset, littleEndian, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) {
checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
}
ieee754.write(buf, value, offset, littleEndian, 23, 4)
return offset + 4
}
Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
return writeFloat(this, value, offset, true, noAssert)
}
Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
return writeFloat(this, value, offset, false, noAssert)
}
function writeDouble (buf, value, offset, littleEndian, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) {
checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
}
ieee754.write(buf, value, offset, littleEndian, 52, 8)
return offset + 8
}
Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
return writeDouble(this, value, offset, true, noAssert)
}
Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
return writeDouble(this, value, offset, false, noAssert)
}
// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function copy (target, targetStart, start, end) {
if (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer')
if (!start) start = 0
if (!end && end !== 0) end = this.length
if (targetStart >= target.length) targetStart = target.length
if (!targetStart) targetStart = 0
if (end > 0 && end < start) end = start
// Copy 0 bytes; we're done
if (end === start) return 0
if (target.length === 0 || this.length === 0) return 0
// Fatal error conditions
if (targetStart < 0) {
throw new RangeError('targetStart out of bounds')
}
if (start < 0 || start >= this.length) throw new RangeError('Index out of range')
if (end < 0) throw new RangeError('sourceEnd out of bounds')
// Are we oob?
if (end > this.length) end = this.length
if (target.length - targetStart < end - start) {
end = target.length - targetStart + start
}
var len = end - start
if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') {
// Use built-in when available, missing from IE11
this.copyWithin(targetStart, start, end)
} else if (this === target && start < targetStart && targetStart < end) {
// descending copy from end
for (var i = len - 1; i >= 0; --i) {
target[i + targetStart] = this[i + start]
}
} else {
Uint8Array.prototype.set.call(
target,
this.subarray(start, end),
targetStart
)
}
return len
}
// Usage:
// buffer.fill(number[, offset[, end]])
// buffer.fill(buffer[, offset[, end]])
// buffer.fill(string[, offset[, end]][, encoding])
Buffer.prototype.fill = function fill (val, start, end, encoding) {
// Handle string cases:
if (typeof val === 'string') {
if (typeof start === 'string') {
encoding = start
start = 0
end = this.length
} else if (typeof end === 'string') {
encoding = end
end = this.length
}
if (encoding !== undefined && typeof encoding !== 'string') {
throw new TypeError('encoding must be a string')
}
if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
throw new TypeError('Unknown encoding: ' + encoding)
}
if (val.length === 1) {
var code = val.charCodeAt(0)
if ((encoding === 'utf8' && code < 128) ||
encoding === 'latin1') {
// Fast path: If `val` fits into a single byte, use that numeric value.
val = code
}
}
} else if (typeof val === 'number') {
val = val & 255
}
// Invalid ranges are not set to a default, so can range check early.
if (start < 0 || this.length < start || this.length < end) {
throw new RangeError('Out of range index')
}
if (end <= start) {
return this
}
start = start >>> 0
end = end === undefined ? this.length : end >>> 0
if (!val) val = 0
var i
if (typeof val === 'number') {
for (i = start; i < end; ++i) {
this[i] = val
}
} else {
var bytes = Buffer.isBuffer(val)
? val
: Buffer.from(val, encoding)
var len = bytes.length
if (len === 0) {
throw new TypeError('The value "' + val +
'" is invalid for argument "value"')
}
for (i = 0; i < end - start; ++i) {
this[i + start] = bytes[i % len]
}
}
return this
}
// HELPER FUNCTIONS
// ================
var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g
function base64clean (str) {
// Node takes equal signs as end of the Base64 encoding
str = str.split('=')[0]
// Node strips out invalid characters like \n and \t from the string, base64-js does not
str = str.trim().replace(INVALID_BASE64_RE, '')
// Node converts strings with length < 2 to ''
if (str.length < 2) return ''
// Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
while (str.length % 4 !== 0) {
str = str + '='
}
return str
}
function toHex (n) {
if (n < 16) return '0' + n.toString(16)
return n.toString(16)
}
function utf8ToBytes (string, units) {
units = units || Infinity
var codePoint
var length = string.length
var leadSurrogate = null
var bytes = []
for (var i = 0; i < length; ++i) {
codePoint = string.charCodeAt(i)
// is surrogate component
if (codePoint > 0xD7FF && codePoint < 0xE000) {
// last char was a lead
if (!leadSurrogate) {
// no lead yet
if (codePoint > 0xDBFF) {
// unexpected trail
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
continue
} else if (i + 1 === length) {
// unpaired lead
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
continue
}
// valid lead
leadSurrogate = codePoint
continue
}
// 2 leads in a row
if (codePoint < 0xDC00) {
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
leadSurrogate = codePoint
continue
}
// valid surrogate pair
codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
} else if (leadSurrogate) {
// valid bmp char, but last char was a lead
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
}
leadSurrogate = null
// encode utf8
if (codePoint < 0x80) {
if ((units -= 1) < 0) break
bytes.push(codePoint)
} else if (codePoint < 0x800) {
if ((units -= 2) < 0) break
bytes.push(
codePoint >> 0x6 | 0xC0,
codePoint & 0x3F | 0x80
)
} else if (codePoint < 0x10000) {
if ((units -= 3) < 0) break
bytes.push(
codePoint >> 0xC | 0xE0,
codePoint >> 0x6 & 0x3F | 0x80,
codePoint & 0x3F | 0x80
)
} else if (codePoint < 0x110000) {
if ((units -= 4) < 0) break
bytes.push(
codePoint >> 0x12 | 0xF0,
codePoint >> 0xC & 0x3F | 0x80,
codePoint >> 0x6 & 0x3F | 0x80,
codePoint & 0x3F | 0x80
)
} else {
throw new Error('Invalid code point')
}
}
return bytes
}
function asciiToBytes (str) {
var byteArray = []
for (var i = 0; i < str.length; ++i) {
// Node's code seems to be doing this and not & 0x7F..
byteArray.push(str.charCodeAt(i) & 0xFF)
}
return byteArray
}
function utf16leToBytes (str, units) {
var c, hi, lo
var byteArray = []
for (var i = 0; i < str.length; ++i) {
if ((units -= 2) < 0) break
c = str.charCodeAt(i)
hi = c >> 8
lo = c % 256
byteArray.push(lo)
byteArray.push(hi)
}
return byteArray
}
function base64ToBytes (str) {
return base64.toByteArray(base64clean(str))
}
function blitBuffer (src, dst, offset, length) {
for (var i = 0; i < length; ++i) {
if ((i + offset >= dst.length) || (i >= src.length)) break
dst[i + offset] = src[i]
}
return i
}
// ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass
// the `instanceof` check but they should be treated as of that type.
// See: https://github.com/feross/buffer/issues/166
function isInstance (obj, type) {
return obj instanceof type ||
(obj != null && obj.constructor != null && obj.constructor.name != null &&
obj.constructor.name === type.name)
}
function numberIsNaN (obj) {
// For IE11 support
return obj !== obj // eslint-disable-line no-self-compare
}
}).call(this)}).call(this,require("buffer").Buffer)
},{"base64-js":8,"buffer":10,"ieee754":46}],11:[function(require,module,exports){
'use strict';
var GetIntrinsic = require('get-intrinsic');
var callBind = require('./');
var $indexOf = callBind(GetIntrinsic('String.prototype.indexOf'));
module.exports = function callBoundIntrinsic(name, allowMissing) {
var intrinsic = GetIntrinsic(name, !!allowMissing);
if (typeof intrinsic === 'function' && $indexOf(name, '.prototype.') > -1) {
return callBind(intrinsic);
}
return intrinsic;
};
},{"./":12,"get-intrinsic":39}],12:[function(require,module,exports){
'use strict';
var bind = require('function-bind');
var GetIntrinsic = require('get-intrinsic');
var $apply = GetIntrinsic('%Function.prototype.apply%');
var $call = GetIntrinsic('%Function.prototype.call%');
var $reflectApply = GetIntrinsic('%Reflect.apply%', true) || bind.call($call, $apply);
var $gOPD = GetIntrinsic('%Object.getOwnPropertyDescriptor%', true);
var $defineProperty = GetIntrinsic('%Object.defineProperty%', true);
var $max = GetIntrinsic('%Math.max%');
if ($defineProperty) {
try {
$defineProperty({}, 'a', { value: 1 });
} catch (e) {
// IE 8 has a broken defineProperty
$defineProperty = null;
}
}
module.exports = function callBind(originalFunction) {
var func = $reflectApply(bind, $call, arguments);
if ($gOPD && $defineProperty) {
var desc = $gOPD(func, 'length');
if (desc.configurable) {
// original length, plus the receiver, minus any additional arguments (after the receiver)
$defineProperty(
func,
'length',
{ value: 1 + $max(0, originalFunction.length - (arguments.length - 1)) }
);
}
}
return func;
};
var applyBind = function applyBind() {
return $reflectApply(bind, $apply, arguments);
};
if ($defineProperty) {
$defineProperty(module.exports, 'apply', { value: applyBind });
} else {
module.exports.apply = applyBind;
}
},{"function-bind":37,"get-intrinsic":39}],13:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(arg) {
if (Array.isArray) {
return Array.isArray(arg);
}
return objectToString(arg) === '[object Array]';
}
exports.isArray = isArray;
function isBoolean(arg) {
return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;
function isNull(arg) {
return arg === null;
}
exports.isNull = isNull;
function isNullOrUndefined(arg) {
return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;
function isNumber(arg) {
return typeof arg === 'number';
}
exports.isNumber = isNumber;
function isString(arg) {
return typeof arg === 'string';
}
exports.isString = isString;
function isSymbol(arg) {
return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;
function isUndefined(arg) {
return arg === void 0;
}
exports.isUndefined = isUndefined;
function isRegExp(re) {
return objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;
function isObject(arg) {
return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;
function isDate(d) {
return objectToString(d) === '[object Date]';
}
exports.isDate = isDate;
function isError(e) {
return (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;
function isFunction(arg) {
return typeof arg === 'function';
}
exports.isFunction = isFunction;
function isPrimitive(arg) {
return arg === null ||
typeof arg === 'boolean' ||
typeof arg === 'number' ||
typeof arg === 'string' ||
typeof arg === 'symbol' || // ES6 symbol
typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;
exports.isBuffer = require('buffer').Buffer.isBuffer;
function objectToString(o) {
return Object.prototype.toString.call(o);
}
},{"buffer":10}],14:[function(require,module,exports){
'use strict';
var objectKeys = require('object-keys');
var isArguments = require('is-arguments');
var is = require('object-is');
var isRegex = require('is-regex');
var flags = require('regexp.prototype.flags');
var isArray = require('isarray');
var isDate = require('is-date-object');
var whichBoxedPrimitive = require('which-boxed-primitive');
var GetIntrinsic = require('get-intrinsic');
var callBound = require('call-bind/callBound');
var whichCollection = require('which-collection');
var getIterator = require('es-get-iterator');
var getSideChannel = require('side-channel');
var whichTypedArray = require('which-typed-array');
var assign = require('object.assign');
var $getTime = callBound('Date.prototype.getTime');
var gPO = Object.getPrototypeOf;
var $objToString = callBound('Object.prototype.toString');
var $Set = GetIntrinsic('%Set%', true);
var $mapHas = callBound('Map.prototype.has', true);
var $mapGet = callBound('Map.prototype.get', true);
var $mapSize = callBound('Map.prototype.size', true);
var $setAdd = callBound('Set.prototype.add', true);
var $setDelete = callBound('Set.prototype.delete', true);
var $setHas = callBound('Set.prototype.has', true);
var $setSize = callBound('Set.prototype.size', true);
// taken from https://github.com/browserify/commonjs-assert/blob/bba838e9ba9e28edf3127ce6974624208502f6bc/internal/util/comparisons.js#L401-L414
function setHasEqualElement(set, val1, opts, channel) {
var i = getIterator(set);
var result;
while ((result = i.next()) && !result.done) {
if (internalDeepEqual(val1, result.value, opts, channel)) { // eslint-disable-line no-use-before-define
// Remove the matching element to make sure we do not check that again.
$setDelete(set, result.value);
return true;
}
}
return false;
}
// taken from https://github.com/browserify/commonjs-assert/blob/bba838e9ba9e28edf3127ce6974624208502f6bc/internal/util/comparisons.js#L416-L439
function findLooseMatchingPrimitives(prim) {
if (typeof prim === 'undefined') {
return null;
}
if (typeof prim === 'object') { // Only pass in null as object!
return void 0;
}
if (typeof prim === 'symbol') {
return false;
}
if (typeof prim === 'string' || typeof prim === 'number') {
// Loose equal entries exist only if the string is possible to convert to a regular number and not NaN.
return +prim === +prim; // eslint-disable-line no-implicit-coercion
}
return true;
}
// taken from https://github.com/browserify/commonjs-assert/blob/bba838e9ba9e28edf3127ce6974624208502f6bc/internal/util/comparisons.js#L449-L460
function mapMightHaveLoosePrim(a, b, prim, item, opts, channel) {
var altValue = findLooseMatchingPrimitives(prim);
if (altValue != null) {
return altValue;
}
var curB = $mapGet(b, altValue);
var looseOpts = assign({}, opts, { strict: false });
if (
(typeof curB === 'undefined' && !$mapHas(b, altValue))
// eslint-disable-next-line no-use-before-define
|| !internalDeepEqual(item, curB, looseOpts, channel)
) {
return false;
}
// eslint-disable-next-line no-use-before-define
return !$mapHas(a, altValue) && internalDeepEqual(item, curB, looseOpts, channel);
}
// taken from https://github.com/browserify/commonjs-assert/blob/bba838e9ba9e28edf3127ce6974624208502f6bc/internal/util/comparisons.js#L441-L447
function setMightHaveLoosePrim(a, b, prim) {
var altValue = findLooseMatchingPrimitives(prim);
if (altValue != null) {
return altValue;
}
return $setHas(b, altValue) && !$setHas(a, altValue);
}
// taken from https://github.com/browserify/commonjs-assert/blob/bba838e9ba9e28edf3127ce6974624208502f6bc/internal/util/comparisons.js#L518-L533
function mapHasEqualEntry(set, map, key1, item1, opts, channel) {
var i = getIterator(set);
var result;
var key2;
while ((result = i.next()) && !result.done) {
key2 = result.value;
if (
// eslint-disable-next-line no-use-before-define
internalDeepEqual(key1, key2, opts, channel)
// eslint-disable-next-line no-use-before-define
&& internalDeepEqual(item1, $mapGet(map, key2), opts, channel)
) {
$setDelete(set, key2);
return true;
}
}
return false;
}
function internalDeepEqual(actual, expected, options, channel) {
var opts = options || {};
// 7.1. All identical values are equivalent, as determined by ===.
if (opts.strict ? is(actual, expected) : actual === expected) {
return true;
}
var actualBoxed = whichBoxedPrimitive(actual);
var expectedBoxed = whichBoxedPrimitive(expected);
if (actualBoxed !== expectedBoxed) {
return false;
}
// 7.3. Other pairs that do not both pass typeof value == 'object', equivalence is determined by ==.
if (!actual || !expected || (typeof actual !== 'object' && typeof expected !== 'object')) {
return opts.strict ? is(actual, expected) : actual == expected; // eslint-disable-line eqeqeq
}
/*
* 7.4. For all other Object pairs, including Array objects, equivalence is
* determined by having the same number of owned properties (as verified
* with Object.prototype.hasOwnProperty.call), the same set of keys
* (although not necessarily the same order), equivalent values for every
* corresponding key, and an identical 'prototype' property. Note: this
* accounts for both named and indexed properties on Arrays.
*/
// see https://github.com/nodejs/node/commit/d3aafd02efd3a403d646a3044adcf14e63a88d32 for memos/channel inspiration
var hasActual = channel.has(actual);
var hasExpected = channel.has(expected);
var sentinel;
if (hasActual && hasExpected) {
if (channel.get(actual) === channel.get(expected)) {
return true;
}
} else {
sentinel = {};
}
if (!hasActual) { channel.set(actual, sentinel); }
if (!hasExpected) { channel.set(expected, sentinel); }
// eslint-disable-next-line no-use-before-define
return objEquiv(actual, expected, opts, channel);
}
function isBuffer(x) {
if (!x || typeof x !== 'object' || typeof x.length !== 'number') {
return false;
}
if (typeof x.copy !== 'function' || typeof x.slice !== 'function') {
return false;
}
if (x.length > 0 && typeof x[0] !== 'number') {
return false;
}
return !!(x.constructor && x.constructor.isBuffer && x.constructor.isBuffer(x));
}
function setEquiv(a, b, opts, channel) {
if ($setSize(a) !== $setSize(b)) {
return false;
}
var iA = getIterator(a);
var iB = getIterator(b);
var resultA;
var resultB;
var set;
while ((resultA = iA.next()) && !resultA.done) {
if (resultA.value && typeof resultA.value === 'object') {
if (!set) { set = new $Set(); }
$setAdd(set, resultA.value);
} else if (!$setHas(b, resultA.value)) {
if (opts.strict) { return false; }
if (!setMightHaveLoosePrim(a, b, resultA.value)) {
return false;
}
if (!set) { set = new $Set(); }
$setAdd(set, resultA.value);
}
}
if (set) {
while ((resultB = iB.next()) && !resultB.done) {
// We have to check if a primitive value is already matching and only if it's not, go hunting for it.
if (resultB.value && typeof resultB.value === 'object') {
if (!setHasEqualElement(set, resultB.value, opts.strict, channel)) {
return false;
}
} else if (
!opts.strict
&& !$setHas(a, resultB.value)
&& !setHasEqualElement(set, resultB.value, opts.strict, channel)
) {
return false;
}
}
return $setSize(set) === 0;
}
return true;
}
function mapEquiv(a, b, opts, channel) {
if ($mapSize(a) !== $mapSize(b)) {
return false;
}
var iA = getIterator(a);
var iB = getIterator(b);
var resultA;
var resultB;
var set;
var key;
var item1;
var item2;
while ((resultA = iA.next()) && !resultA.done) {
key = resultA.value[0];
item1 = resultA.value[1];
if (key && typeof key === 'object') {
if (!set) { set = new $Set(); }
$setAdd(set, key);
} else {
item2 = $mapGet(b, key);
if ((typeof item2 === 'undefined' && !$mapHas(b, key)) || !internalDeepEqual(item1, item2, opts, channel)) {
if (opts.strict) {
return false;
}
if (!mapMightHaveLoosePrim(a, b, key, item1, opts, channel)) {
return false;
}
if (!set) { set = new $Set(); }
$setAdd(set, key);
}
}
}
if (set) {
while ((resultB = iB.next()) && !resultB.done) {
key = resultB.value[0];
item2 = resultB.value[1];
if (key && typeof key === 'object') {
if (!mapHasEqualEntry(set, a, key, item2, opts, channel)) {
return false;
}
} else if (
!opts.strict
&& (!a.has(key) || !internalDeepEqual($mapGet(a, key), item2, opts, channel))
&& !mapHasEqualEntry(set, a, key, item2, assign({}, opts, { strict: false }), channel)
) {
return false;
}
}
return $setSize(set) === 0;
}
return true;
}
function objEquiv(a, b, opts, channel) {
/* eslint max-statements: [2, 100], max-lines-per-function: [2, 120], max-depth: [2, 5] */
var i, key;
if (typeof a !== typeof b) { return false; }
if (a == null || b == null) { return false; }
if ($objToString(a) !== $objToString(b)) { return false; }
if (isArguments(a) !== isArguments(b)) { return false; }
var aIsArray = isArray(a);
var bIsArray = isArray(b);
if (aIsArray !== bIsArray) { return false; }
// TODO: replace when a cross-realm brand check is available
var aIsError = a instanceof Error;
var bIsError = b instanceof Error;
if (aIsError !== bIsError) { return false; }
if (aIsError || bIsError) {
if (a.name !== b.name || a.message !== b.message) { return false; }
}
var aIsRegex = isRegex(a);
var bIsRegex = isRegex(b);
if (aIsRegex !== bIsRegex) { return false; }
if ((aIsRegex || bIsRegex) && (a.source !== b.source || flags(a) !== flags(b))) {
return false;
}
var aIsDate = isDate(a);
var bIsDate = isDate(b);
if (aIsDate !== bIsDate) { return false; }
if (aIsDate || bIsDate) { // && would work too, because both are true or both false here
if ($getTime(a) !== $getTime(b)) { return false; }
}
if (opts.strict && gPO && gPO(a) !== gPO(b)) { return false; }
if (whichTypedArray(a) !== whichTypedArray(b)) {
return false;
}
var aIsBuffer = isBuffer(a);
var bIsBuffer = isBuffer(b);
if (aIsBuffer !== bIsBuffer) { return false; }
if (aIsBuffer || bIsBuffer) { // && would work too, because both are true or both false here
if (a.length !== b.length) { return false; }
for (i = 0; i < a.length; i++) {
if (a[i] !== b[i]) { return false; }
}
return true;
}
if (typeof a !== typeof b) { return false; }
var ka = objectKeys(a);
var kb = objectKeys(b);
// having the same number of owned properties (keys incorporates hasOwnProperty)
if (ka.length !== kb.length) { return false; }
// the same set of keys (although not necessarily the same order),
ka.sort();
kb.sort();
// ~~~cheap key test
for (i = ka.length - 1; i >= 0; i--) {
if (ka[i] != kb[i]) { return false; } // eslint-disable-line eqeqeq
}
// equivalent values for every corresponding key, and ~~~possibly expensive deep test
for (i = ka.length - 1; i >= 0; i--) {
key = ka[i];
if (!internalDeepEqual(a[key], b[key], opts, channel)) { return false; }
}
var aCollection = whichCollection(a);
var bCollection = whichCollection(b);
if (aCollection !== bCollection) {
return false;
}
if (aCollection === 'Set' || bCollection === 'Set') { // aCollection === bCollection
return setEquiv(a, b, opts, channel);
}
if (aCollection === 'Map') { // aCollection === bCollection
return mapEquiv(a, b, opts, channel);
}
return true;
}
module.exports = function deepEqual(a, b, opts) {
return internalDeepEqual(a, b, opts, getSideChannel());
};
},{"call-bind/callBound":11,"es-get-iterator":29,"get-intrinsic":39,"is-arguments":48,"is-date-object":52,"is-regex":55,"isarray":15,"object-is":67,"object-keys":71,"object.assign":74,"regexp.prototype.flags":96,"side-channel":100,"which-boxed-primitive":113,"which-collection":114,"which-typed-array":115}],15:[function(require,module,exports){
var toString = {}.toString;
module.exports = Array.isArray || function (arr) {
return toString.call(arr) == '[object Array]';
};
},{}],16:[function(require,module,exports){
'use strict';
var keys = require('object-keys');
var hasSymbols = typeof Symbol === 'function' && typeof Symbol('foo') === 'symbol';
var toStr = Object.prototype.toString;
var concat = Array.prototype.concat;
var origDefineProperty = Object.defineProperty;
var isFunction = function (fn) {
return typeof fn === 'function' && toStr.call(fn) === '[object Function]';
};
var hasPropertyDescriptors = require('has-property-descriptors')();
var supportsDescriptors = origDefineProperty && hasPropertyDescriptors;
var defineProperty = function (object, name, value, predicate) {
if (name in object && (!isFunction(predicate) || !predicate())) {
return;
}
if (supportsDescriptors) {
origDefineProperty(object, name, {
configurable: true,
enumerable: false,
value: value,
writable: true
});
} else {
object[name] = value; // eslint-disable-line no-param-reassign
}
};
var defineProperties = function (object, map) {
var predicates = arguments.length > 2 ? arguments[2] : {};
var props = keys(map);
if (hasSymbols) {
props = concat.call(props, Object.getOwnPropertySymbols(map));
}
for (var i = 0; i < props.length; i += 1) {
defineProperty(object, props[i], map[props[i]], predicates[props[i]]);
}
};
defineProperties.supportsDescriptors = !!supportsDescriptors;
module.exports = defineProperties;
},{"has-property-descriptors":41,"object-keys":71}],17:[function(require,module,exports){
module.exports = function () {
for (var i = 0; i < arguments.length; i++) {
if (arguments[i] !== undefined) return arguments[i];
}
};
},{}],18:[function(require,module,exports){
'use strict';
// http://262.ecma-international.org/5.1/#sec-9.11
module.exports = require('is-callable');
},{"is-callable":51}],19:[function(require,module,exports){
'use strict';
module.exports = require('../5/CheckObjectCoercible');
},{"../5/CheckObjectCoercible":25}],20:[function(require,module,exports){
'use strict';
var GetIntrinsic = require('get-intrinsic');
var $TypeError = GetIntrinsic('%TypeError%');
var $Number = GetIntrinsic('%Number%');
var $RegExp = GetIntrinsic('%RegExp%');
var $parseInteger = GetIntrinsic('%parseInt%');
var callBound = require('call-bind/callBound');
var regexTester = require('../helpers/regexTester');
var isPrimitive = require('../helpers/isPrimitive');
var $strSlice = callBound('String.prototype.slice');
var isBinary = regexTester(/^0b[01]+$/i);
var isOctal = regexTester(/^0o[0-7]+$/i);
var isInvalidHexLiteral = regexTester(/^[-+]0x[0-9a-f]+$/i);
var nonWS = ['\u0085', '\u200b', '\ufffe'].join('');
var nonWSregex = new $RegExp('[' + nonWS + ']', 'g');
var hasNonWS = regexTester(nonWSregex);
// whitespace from: https://es5.github.io/#x15.5.4.20
// implementation from https://github.com/es-shims/es5-shim/blob/v3.4.0/es5-shim.js#L1304-L1324
var ws = [
'\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003',
'\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028',
'\u2029\uFEFF'
].join('');
var trimRegex = new RegExp('(^[' + ws + ']+)|([' + ws + ']+$)', 'g');
var $replace = callBound('String.prototype.replace');
var $trim = function (value) {
return $replace(value, trimRegex, '');
};
var ToPrimitive = require('./ToPrimitive');
// https://ecma-international.org/ecma-262/6.0/#sec-tonumber
module.exports = function ToNumber(argument) {
var value = isPrimitive(argument) ? argument : ToPrimitive(argument, $Number);
if (typeof value === 'symbol') {
throw new $TypeError('Cannot convert a Symbol value to a number');
}
if (typeof value === 'bigint') {
throw new $TypeError('Conversion from \'BigInt\' to \'number\' is not allowed.');
}
if (typeof value === 'string') {
if (isBinary(value)) {
return ToNumber($parseInteger($strSlice(value, 2), 2));
} else if (isOctal(value)) {
return ToNumber($parseInteger($strSlice(value, 2), 8));
} else if (hasNonWS(value) || isInvalidHexLiteral(value)) {
return NaN;
}
var trimmed = $trim(value);
if (trimmed !== value) {
return ToNumber(trimmed);
}
}
return $Number(value);
};
},{"../helpers/isPrimitive":27,"../helpers/regexTester":28,"./ToPrimitive":22,"call-bind/callBound":11,"get-intrinsic":39}],21:[function(require,module,exports){
'use strict';
var GetIntrinsic = require('get-intrinsic');
var $Object = GetIntrinsic('%Object%');
var RequireObjectCoercible = require('./RequireObjectCoercible');
// https://ecma-international.org/ecma-262/6.0/#sec-toobject
module.exports = function ToObject(value) {
RequireObjectCoercible(value);
return $Object(value);
};
},{"./RequireObjectCoercible":19,"get-intrinsic":39}],22:[function(require,module,exports){
'use strict';
var toPrimitive = require('es-to-primitive/es2015');
// https://ecma-international.org/ecma-262/6.0/#sec-toprimitive
module.exports = function ToPrimitive(input) {
if (arguments.length > 1) {
return toPrimitive(input, arguments[1]);
}
return toPrimitive(input);
};
},{"es-to-primitive/es2015":31}],23:[function(require,module,exports){
'use strict';
var GetIntrinsic = require('get-intrinsic');
var $String = GetIntrinsic('%String%');
var $TypeError = GetIntrinsic('%TypeError%');
// https://ecma-international.org/ecma-262/6.0/#sec-tostring
module.exports = function ToString(argument) {
if (typeof argument === 'symbol') {
throw new $TypeError('Cannot convert a Symbol value to a string');
}
return $String(argument);
};
},{"get-intrinsic":39}],24:[function(require,module,exports){
'use strict';
var ToNumber = require('./ToNumber');
// http://262.ecma-international.org/5.1/#sec-9.6
module.exports = function ToUint32(x) {
return ToNumber(x) >>> 0;
};
},{"./ToNumber":20}],25:[function(require,module,exports){
'use strict';
var GetIntrinsic = require('get-intrinsic');
var $TypeError = GetIntrinsic('%TypeError%');
// http://262.ecma-international.org/5.1/#sec-9.10
module.exports = function CheckObjectCoercible(value, optMessage) {
if (value == null) {
throw new $TypeError(optMessage || ('Cannot call method on ' + value));
}
return value;
};
},{"get-intrinsic":39}],26:[function(require,module,exports){
'use strict';
var GetIntrinsic = require('get-intrinsic');
var $gOPD = GetIntrinsic('%Object.getOwnPropertyDescriptor%', true);
if ($gOPD) {
try {
$gOPD([], 'length');
} catch (e) {
// IE 8 has a broken gOPD
$gOPD = null;
}
}
module.exports = $gOPD;
},{"get-intrinsic":39}],27:[function(require,module,exports){
'use strict';
module.exports = function isPrimitive(value) {
return value === null || (typeof value !== 'function' && typeof value !== 'object');
};
},{}],28:[function(require,module,exports){
'use strict';
var GetIntrinsic = require('get-intrinsic');
var $test = GetIntrinsic('RegExp.prototype.test');
var callBind = require('call-bind');
module.exports = function regexTester(regex) {
return callBind($test, regex);
};
},{"call-bind":12,"get-intrinsic":39}],29:[function(require,module,exports){
(function (process){(function (){
'use strict';
/* eslint global-require: 0 */
// the code is structured this way so that bundlers can
// alias out `has-symbols` to `() => true` or `() => false` if your target
// environments' Symbol capabilities are known, and then use
// dead code elimination on the rest of this module.
//
// Similarly, `isarray` can be aliased to `Array.isArray` if
// available in all target environments.
var isArguments = require('is-arguments');
if (require('has-symbols')() || require('has-symbols/shams')()) {
var $iterator = Symbol.iterator;
// Symbol is available natively or shammed
// natively:
// - Chrome >= 38
// - Edge 12-14?, Edge >= 15 for sure
// - FF >= 36
// - Safari >= 9
// - node >= 0.12
module.exports = function getIterator(iterable) {
// alternatively, `iterable[$iterator]?.()`
if (iterable != null && typeof iterable[$iterator] !== 'undefined') {
return iterable[$iterator]();
}
if (isArguments(iterable)) {
// arguments objects lack Symbol.iterator
// - node 0.12
return Array.prototype[$iterator].call(iterable);
}
};
} else {
// Symbol is not available, native or shammed
var isArray = require('isarray');
var isString = require('is-string');
var GetIntrinsic = require('get-intrinsic');
var $Map = GetIntrinsic('%Map%', true);
var $Set = GetIntrinsic('%Set%', true);
var callBound = require('call-bind/callBound');
var $arrayPush = callBound('Array.prototype.push');
var $charCodeAt = callBound('String.prototype.charCodeAt');
var $stringSlice = callBound('String.prototype.slice');
var advanceStringIndex = function advanceStringIndex(S, index) {
var length = S.length;
if ((index + 1) >= length) {
return index + 1;
}
var first = $charCodeAt(S, index);
if (first < 0xD800 || first > 0xDBFF) {
return index + 1;
}
var second = $charCodeAt(S, index + 1);
if (second < 0xDC00 || second > 0xDFFF) {
return index + 1;
}
return index + 2;
};
var getArrayIterator = function getArrayIterator(arraylike) {
var i = 0;
return {
next: function next() {
var done = i >= arraylike.length;
var value;
if (!done) {
value = arraylike[i];
i += 1;
}
return {
done: done,
value: value
};
}
};
};
var getNonCollectionIterator = function getNonCollectionIterator(iterable, noPrimordialCollections) {
if (isArray(iterable) || isArguments(iterable)) {
return getArrayIterator(iterable);
}
if (isString(iterable)) {
var i = 0;
return {
next: function next() {
var nextIndex = advanceStringIndex(iterable, i);
var value = $stringSlice(iterable, i, nextIndex);
i = nextIndex;
return {
done: nextIndex > iterable.length,
value: value
};
}
};
}
// es6-shim and es-shims' es-map use a string "_es6-shim iterator_" property on different iterables, such as MapIterator.
if (noPrimordialCollections && typeof iterable['_es6-shim iterator_'] !== 'undefined') {
return iterable['_es6-shim iterator_']();
}
};
if (!$Map && !$Set) {
// the only language iterables are Array, String, arguments
// - Safari <= 6.0
// - Chrome < 38
// - node < 0.12
// - FF < 13
// - IE < 11
// - Edge < 11
module.exports = function getIterator(iterable) {
if (iterable != null) {
return getNonCollectionIterator(iterable, true);
}
};
} else {
// either Map or Set are available, but Symbol is not
// - es6-shim on an ES5 browser
// - Safari 6.2 (maybe 6.1?)
// - FF v[13, 36)
// - IE 11
// - Edge 11
// - Safari v[6, 9)
var isMap = require('is-map');
var isSet = require('is-set');
// Firefox >= 27, IE 11, Safari 6.2 - 9, Edge 11, es6-shim in older envs, all have forEach
var $mapForEach = callBound('Map.prototype.forEach', true);
var $setForEach = callBound('Set.prototype.forEach', true);
if (typeof process === 'undefined' || !process.versions || !process.versions.node) { // "if is not node"
// Firefox 17 - 26 has `.iterator()`, whose iterator `.next()` either
// returns a value, or throws a StopIteration object. These browsers
// do not have any other mechanism for iteration.
var $mapIterator = callBound('Map.prototype.iterator', true);
var $setIterator = callBound('Set.prototype.iterator', true);
var getStopIterationIterator = function (iterator) {
var done = false;
return {
next: function next() {
try {
return {
done: done,
value: done ? undefined : iterator.next()
};
} catch (e) {
done = true;
return {
done: true,
value: undefined
};
}
}
};
};
}
// Firefox 27-35, and some older es6-shim versions, use a string "@@iterator" property
// this returns a proper iterator object, so we should use it instead of forEach.
// newer es6-shim versions use a string "_es6-shim iterator_" property.
var $mapAtAtIterator = callBound('Map.prototype.@@iterator', true) || callBound('Map.prototype._es6-shim iterator_', true);
var $setAtAtIterator = callBound('Set.prototype.@@iterator', true) || callBound('Set.prototype._es6-shim iterator_', true);
var getCollectionIterator = function getCollectionIterator(iterable) {
if (isMap(iterable)) {
if ($mapIterator) {
return getStopIterationIterator($mapIterator(iterable));
}
if ($mapAtAtIterator) {
return $mapAtAtIterator(iterable);
}
if ($mapForEach) {
var entries = [];
$mapForEach(iterable, function (v, k) {
$arrayPush(entries, [k, v]);
});
return getArrayIterator(entries);
}
}
if (isSet(iterable)) {
if ($setIterator) {
return getStopIterationIterator($setIterator(iterable));
}
if ($setAtAtIterator) {
return $setAtAtIterator(iterable);
}
if ($setForEach) {
var values = [];
$setForEach(iterable, function (v) {
$arrayPush(values, v);
});
return getArrayIterator(values);
}
}
};
module.exports = function getIterator(iterable) {
return getCollectionIterator(iterable) || getNonCollectionIterator(iterable);
};
}
}
}).call(this)}).call(this,require('_process'))
},{"_process":79,"call-bind/callBound":11,"get-intrinsic":39,"has-symbols":42,"has-symbols/shams":43,"is-arguments":48,"is-map":53,"is-set":56,"is-string":57,"isarray":30}],30:[function(require,module,exports){
arguments[4][15][0].apply(exports,arguments)
},{"dup":15}],31:[function(require,module,exports){
'use strict';
var hasSymbols = typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol';
var isPrimitive = require('./helpers/isPrimitive');
var isCallable = require('is-callable');
var isDate = require('is-date-object');
var isSymbol = require('is-symbol');
var ordinaryToPrimitive = function OrdinaryToPrimitive(O, hint) {
if (typeof O === 'undefined' || O === null) {
throw new TypeError('Cannot call method on ' + O);
}
if (typeof hint !== 'string' || (hint !== 'number' && hint !== 'string')) {
throw new TypeError('hint must be "string" or "number"');
}
var methodNames = hint === 'string' ? ['toString', 'valueOf'] : ['valueOf', 'toString'];
var method, result, i;
for (i = 0; i < methodNames.length; ++i) {
method = O[methodNames[i]];
if (isCallable(method)) {
result = method.call(O);
if (isPrimitive(result)) {
return result;
}
}
}
throw new TypeError('No default value');
};
var GetMethod = function GetMethod(O, P) {
var func = O[P];
if (func !== null && typeof func !== 'undefined') {
if (!isCallable(func)) {
throw new TypeError(func + ' returned for property ' + P + ' of object ' + O + ' is not a function');
}
return func;
}
return void 0;
};
// http://www.ecma-international.org/ecma-262/6.0/#sec-toprimitive
module.exports = function ToPrimitive(input) {
if (isPrimitive(input)) {
return input;
}
var hint = 'default';
if (arguments.length > 1) {
if (arguments[1] === String) {
hint = 'string';
} else if (arguments[1] === Number) {
hint = 'number';
}
}
var exoticToPrim;
if (hasSymbols) {
if (Symbol.toPrimitive) {
exoticToPrim = GetMethod(input, Symbol.toPrimitive);
} else if (isSymbol(input)) {
exoticToPrim = Symbol.prototype.valueOf;
}
}
if (typeof exoticToPrim !== 'undefined') {
var result = exoticToPrim.call(input, hint);
if (isPrimitive(result)) {
return result;
}
throw new TypeError('unable to convert exotic object to primitive');
}
if (hint === 'default' && (isDate(input) || isSymbol(input))) {
hint = 'string';
}
return ordinaryToPrimitive(input, hint === 'default' ? 'number' : hint);
};
},{"./helpers/isPrimitive":32,"is-callable":51,"is-date-object":52,"is-symbol":58}],32:[function(require,module,exports){
arguments[4][27][0].apply(exports,arguments)
},{"dup":27}],33:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
var objectCreate = Object.create || objectCreatePolyfill
var objectKeys = Object.keys || objectKeysPolyfill
var bind = Function.prototype.bind || functionBindPolyfill
function EventEmitter() {
if (!this._events || !Object.prototype.hasOwnProperty.call(this, '_events')) {
this._events = objectCreate(null);
this._eventsCount = 0;
}
this._maxListeners = this._maxListeners || undefined;
}
module.exports = EventEmitter;
// Backwards-compat with node 0.10.x
EventEmitter.EventEmitter = EventEmitter;
EventEmitter.prototype._events = undefined;
EventEmitter.prototype._maxListeners = undefined;
// By default EventEmitters will print a warning if more than 10 listeners are
// added to it. This is a useful default which helps finding memory leaks.
var defaultMaxListeners = 10;
var hasDefineProperty;
try {
var o = {};
if (Object.defineProperty) Object.defineProperty(o, 'x', { value: 0 });
hasDefineProperty = o.x === 0;
} catch (err) { hasDefineProperty = false }
if (hasDefineProperty) {
Object.defineProperty(EventEmitter, 'defaultMaxListeners', {
enumerable: true,
get: function() {
return defaultMaxListeners;
},
set: function(arg) {
// check whether the input is a positive number (whose value is zero or
// greater and not a NaN).
if (typeof arg !== 'number' || arg < 0 || arg !== arg)
throw new TypeError('"defaultMaxListeners" must be a positive number');
defaultMaxListeners = arg;
}
});
} else {
EventEmitter.defaultMaxListeners = defaultMaxListeners;
}
// Obviously not all Emitters should be limited to 10. This function allows
// that to be increased. Set to zero for unlimited.
EventEmitter.prototype.setMaxListeners = function setMaxListeners(n) {
if (typeof n !== 'number' || n < 0 || isNaN(n))
throw new TypeError('"n" argument must be a positive number');
this._maxListeners = n;
return this;
};
function $getMaxListeners(that) {
if (that._maxListeners === undefined)
return EventEmitter.defaultMaxListeners;
return that._maxListeners;
}
EventEmitter.prototype.getMaxListeners = function getMaxListeners() {
return $getMaxListeners(this);
};
// These standalone emit* functions are used to optimize calling of event
// handlers for fast cases because emit() itself often has a variable number of
// arguments and can be deoptimized because of that. These functions always have
// the same number of arguments and thus do not get deoptimized, so the code
// inside them can execute faster.
function emitNone(handler, isFn, self) {
if (isFn)
handler.call(self);
else {
var len = handler.length;
var listeners = arrayClone(handler, len);
for (var i = 0; i < len; ++i)
listeners[i].call(self);
}
}
function emitOne(handler, isFn, self, arg1) {
if (isFn)
handler.call(self, arg1);
else {
var len = handler.length;
var listeners = arrayClone(handler, len);
for (var i = 0; i < len; ++i)
listeners[i].call(self, arg1);
}
}
function emitTwo(handler, isFn, self, arg1, arg2) {
if (isFn)
handler.call(self, arg1, arg2);
else {
var len = handler.length;
var listeners = arrayClone(handler, len);
for (var i = 0; i < len; ++i)
listeners[i].call(self, arg1, arg2);
}
}
function emitThree(handler, isFn, self, arg1, arg2, arg3) {
if (isFn)
handler.call(self, arg1, arg2, arg3);
else {
var len = handler.length;
var listeners = arrayClone(handler, len);
for (var i = 0; i < len; ++i)
listeners[i].call(self, arg1, arg2, arg3);
}
}
function emitMany(handler, isFn, self, args) {
if (isFn)
handler.apply(self, args);
else {
var len = handler.length;
var listeners = arrayClone(handler, len);
for (var i = 0; i < len; ++i)
listeners[i].apply(self, args);
}
}
EventEmitter.prototype.emit = function emit(type) {
var er, handler, len, args, i, events;
var doError = (type === 'error');
events = this._events;
if (events)
doError = (doError && events.error == null);
else if (!doError)
return false;
// If there is no 'error' event listener then throw.
if (doError) {
if (arguments.length > 1)
er = arguments[1];
if (er instanceof Error) {
throw er; // Unhandled 'error' event
} else {
// At least give some kind of context to the user
var err = new Error('Unhandled "error" event. (' + er + ')');
err.context = er;
throw err;
}
return false;
}
handler = events[type];
if (!handler)
return false;
var isFn = typeof handler === 'function';
len = arguments.length;
switch (len) {
// fast cases
case 1:
emitNone(handler, isFn, this);
break;
case 2:
emitOne(handler, isFn, this, arguments[1]);
break;
case 3:
emitTwo(handler, isFn, this, arguments[1], arguments[2]);
break;
case 4:
emitThree(handler, isFn, this, arguments[1], arguments[2], arguments[3]);
break;
// slower
default:
args = new Array(len - 1);
for (i = 1; i < len; i++)
args[i - 1] = arguments[i];
emitMany(handler, isFn, this, args);
}
return true;
};
function _addListener(target, type, listener, prepend) {
var m;
var events;
var existing;
if (typeof listener !== 'function')
throw new TypeError('"listener" argument must be a function');
events = target._events;
if (!events) {
events = target._events = objectCreate(null);
target._eventsCount = 0;
} else {
// To avoid recursion in the case that type === "newListener"! Before
// adding it to the listeners, first emit "newListener".
if (events.newListener) {
target.emit('newListener', type,
listener.listener ? listener.listener : listener);
// Re-assign `events` because a newListener handler could have caused the
// this._events to be assigned to a new object
events = target._events;
}
existing = events[type];
}
if (!existing) {
// Optimize the case of one listener. Don't need the extra array object.
existing = events[type] = listener;
++target._eventsCount;
} else {
if (typeof existing === 'function') {
// Adding the second element, need to change to array.
existing = events[type] =
prepend ? [listener, existing] : [existing, listener];
} else {
// If we've already got an array, just append.
if (prepend) {
existing.unshift(listener);
} else {
existing.push(listener);
}
}
// Check for listener leak
if (!existing.warned) {
m = $getMaxListeners(target);
if (m && m > 0 && existing.length > m) {
existing.warned = true;
var w = new Error('Possible EventEmitter memory leak detected. ' +
existing.length + ' "' + String(type) + '" listeners ' +
'added. Use emitter.setMaxListeners() to ' +
'increase limit.');
w.name = 'MaxListenersExceededWarning';
w.emitter = target;
w.type = type;
w.count = existing.length;
if (typeof console === 'object' && console.warn) {
console.warn('%s: %s', w.name, w.message);
}
}
}
}
return target;
}
EventEmitter.prototype.addListener = function addListener(type, listener) {
return _addListener(this, type, listener, false);
};
EventEmitter.prototype.on = EventEmitter.prototype.addListener;
EventEmitter.prototype.prependListener =
function prependListener(type, listener) {
return _addListener(this, type, listener, true);
};
function onceWrapper() {
if (!this.fired) {
this.target.removeListener(this.type, this.wrapFn);
this.fired = true;
switch (arguments.length) {
case 0:
return this.listener.call(this.target);
case 1:
return this.listener.call(this.target, arguments[0]);
case 2:
return this.listener.call(this.target, arguments[0], arguments[1]);
case 3:
return this.listener.call(this.target, arguments[0], arguments[1],
arguments[2]);
default:
var args = new Array(arguments.length);
for (var i = 0; i < args.length; ++i)
args[i] = arguments[i];
this.listener.apply(this.target, args);
}
}
}
function _onceWrap(target, type, listener) {
var state = { fired: false, wrapFn: undefined, target: target, type: type, listener: listener };
var wrapped = bind.call(onceWrapper, state);
wrapped.listener = listener;
state.wrapFn = wrapped;
return wrapped;
}
EventEmitter.prototype.once = function once(type, listener) {
if (typeof listener !== 'function')
throw new TypeError('"listener" argument must be a function');
this.on(type, _onceWrap(this, type, listener));
return this;
};
EventEmitter.prototype.prependOnceListener =
function prependOnceListener(type, listener) {
if (typeof listener !== 'function')
throw new TypeError('"listener" argument must be a function');
this.prependListener(type, _onceWrap(this, type, listener));
return this;
};
// Emits a 'removeListener' event if and only if the listener was removed.
EventEmitter.prototype.removeListener =
function removeListener(type, listener) {
var list, events, position, i, originalListener;
if (typeof listener !== 'function')
throw new TypeError('"listener" argument must be a function');
events = this._events;
if (!events)
return this;
list = events[type];
if (!list)
return this;
if (list === listener || list.listener === listener) {
if (--this._eventsCount === 0)
this._events = objectCreate(null);
else {
delete events[type];
if (events.removeListener)
this.emit('removeListener', type, list.listener || listener);
}
} else if (typeof list !== 'function') {
position = -1;
for (i = list.length - 1; i >= 0; i--) {
if (list[i] === listener || list[i].listener === listener) {
originalListener = list[i].listener;
position = i;
break;
}
}
if (position < 0)
return this;
if (position === 0)
list.shift();
else
spliceOne(list, position);
if (list.length === 1)
events[type] = list[0];
if (events.removeListener)
this.emit('removeListener', type, originalListener || listener);
}
return this;
};
EventEmitter.prototype.removeAllListeners =
function removeAllListeners(type) {
var listeners, events, i;
events = this._events;
if (!events)
return this;
// not listening for removeListener, no need to emit
if (!events.removeListener) {
if (arguments.length === 0) {
this._events = objectCreate(null);
this._eventsCount = 0;
} else if (events[type]) {
if (--this._eventsCount === 0)
this._events = objectCreate(null);
else
delete events[type];
}
return this;
}
// emit removeListener for all listeners on all events
if (arguments.length === 0) {
var keys = objectKeys(events);
var key;
for (i = 0; i < keys.length; ++i) {
key = keys[i];
if (key === 'removeListener') continue;
this.removeAllListeners(key);
}
this.removeAllListeners('removeListener');
this._events = objectCreate(null);
this._eventsCount = 0;
return this;
}
listeners = events[type];
if (typeof listeners === 'function') {
this.removeListener(type, listeners);
} else if (listeners) {
// LIFO order
for (i = listeners.length - 1; i >= 0; i--) {
this.removeListener(type, listeners[i]);
}
}
return this;
};
function _listeners(target, type, unwrap) {
var events = target._events;
if (!events)
return [];
var evlistener = events[type];
if (!evlistener)
return [];
if (typeof evlistener === 'function')
return unwrap ? [evlistener.listener || evlistener] : [evlistener];
return unwrap ? unwrapListeners(evlistener) : arrayClone(evlistener, evlistener.length);
}
EventEmitter.prototype.listeners = function listeners(type) {
return _listeners(this, type, true);
};
EventEmitter.prototype.rawListeners = function rawListeners(type) {
return _listeners(this, type, false);
};
EventEmitter.listenerCount = function(emitter, type) {
if (typeof emitter.listenerCount === 'function') {
return emitter.listenerCount(type);
} else {
return listenerCount.call(emitter, type);
}
};
EventEmitter.prototype.listenerCount = listenerCount;
function listenerCount(type) {
var events = this._events;
if (events) {
var evlistener = events[type];
if (typeof evlistener === 'function') {
return 1;
} else if (evlistener) {
return evlistener.length;
}
}
return 0;
}
EventEmitter.prototype.eventNames = function eventNames() {
return this._eventsCount > 0 ? Reflect.ownKeys(this._events) : [];
};
// About 1.5x faster than the two-arg version of Array#splice().
function spliceOne(list, index) {
for (var i = index, k = i + 1, n = list.length; k < n; i += 1, k += 1)
list[i] = list[k];
list.pop();
}
function arrayClone(arr, n) {
var copy = new Array(n);
for (var i = 0; i < n; ++i)
copy[i] = arr[i];
return copy;
}
function unwrapListeners(arr) {
var ret = new Array(arr.length);
for (var i = 0; i < ret.length; ++i) {
ret[i] = arr[i].listener || arr[i];
}
return ret;
}
function objectCreatePolyfill(proto) {
var F = function() {};
F.prototype = proto;
return new F;
}
function objectKeysPolyfill(obj) {
var keys = [];
for (var k in obj) if (Object.prototype.hasOwnProperty.call(obj, k)) {
keys.push(k);
}
return k;
}
function functionBindPolyfill(context) {
var fn = this;
return function () {
return fn.apply(context, arguments);
};
}
},{}],34:[function(require,module,exports){
'use strict';
var isCallable = require('is-callable');
var toStr = Object.prototype.toString;
var hasOwnProperty = Object.prototype.hasOwnProperty;
var forEachArray = function forEachArray(array, iterator, receiver) {
for (var i = 0, len = array.length; i < len; i++) {
if (hasOwnProperty.call(array, i)) {
if (receiver == null) {
iterator(array[i], i, array);
} else {
iterator.call(receiver, array[i], i, array);
}
}
}
};
var forEachString = function forEachString(string, iterator, receiver) {
for (var i = 0, len = string.length; i < len; i++) {
// no such thing as a sparse string.
if (receiver == null) {
iterator(string.charAt(i), i, string);
} else {
iterator.call(receiver, string.charAt(i), i, string);
}
}
};
var forEachObject = function forEachObject(object, iterator, receiver) {
for (var k in object) {
if (hasOwnProperty.call(object, k)) {
if (receiver == null) {
iterator(object[k], k, object);
} else {
iterator.call(receiver, object[k], k, object);
}
}
}
};
var forEach = function forEach(list, iterator, thisArg) {
if (!isCallable(iterator)) {
throw new TypeError('iterator must be a function');
}
var receiver;
if (arguments.length >= 3) {
receiver = thisArg;
}
if (toStr.call(list) === '[object Array]') {
forEachArray(list, iterator, receiver);
} else if (typeof list === 'string') {
forEachString(list, iterator, receiver);
} else {
forEachObject(list, iterator, receiver);
}
};
module.exports = forEach;
},{"is-callable":51}],35:[function(require,module,exports){
var hasOwn = Object.prototype.hasOwnProperty;
var toString = Object.prototype.toString;
module.exports = function forEach (obj, fn, ctx) {
if (toString.call(fn) !== '[object Function]') {
throw new TypeError('iterator must be a function');
}
var l = obj.length;
if (l === +l) {
for (var i = 0; i < l; i++) {
fn.call(ctx, obj[i], i, obj);
}
} else {
for (var k in obj) {
if (hasOwn.call(obj, k)) {
fn.call(ctx, obj[k], k, obj);
}
}
}
};
},{}],36:[function(require,module,exports){
'use strict';
/* eslint no-invalid-this: 1 */
var ERROR_MESSAGE = 'Function.prototype.bind called on incompatible ';
var slice = Array.prototype.slice;
var toStr = Object.prototype.toString;
var funcType = '[object Function]';
module.exports = function bind(that) {
var target = this;
if (typeof target !== 'function' || toStr.call(target) !== funcType) {
throw new TypeError(ERROR_MESSAGE + target);
}
var args = slice.call(arguments, 1);
var bound;
var binder = function () {
if (this instanceof bound) {
var result = target.apply(
this,
args.concat(slice.call(arguments))
);
if (Object(result) === result) {
return result;
}
return this;
} else {
return target.apply(
that,
args.concat(slice.call(arguments))
);
}
};
var boundLength = Math.max(0, target.length - args.length);
var boundArgs = [];
for (var i = 0; i < boundLength; i++) {
boundArgs.push('$' + i);
}
bound = Function('binder', 'return function (' + boundArgs.join(',') + '){ return binder.apply(this,arguments); }')(binder);
if (target.prototype) {
var Empty = function Empty() {};
Empty.prototype = target.prototype;
bound.prototype = new Empty();
Empty.prototype = null;
}
return bound;
};
},{}],37:[function(require,module,exports){
'use strict';
var implementation = require('./implementation');
module.exports = Function.prototype.bind || implementation;
},{"./implementation":36}],38:[function(require,module,exports){
'use strict';
var functionsHaveNames = function functionsHaveNames() {
return typeof function f() {}.name === 'string';
};
var gOPD = Object.getOwnPropertyDescriptor;
if (gOPD) {
try {
gOPD([], 'length');
} catch (e) {
// IE 8 has a broken gOPD
gOPD = null;
}
}
functionsHaveNames.functionsHaveConfigurableNames = function functionsHaveConfigurableNames() {
if (!functionsHaveNames() || !gOPD) {
return false;
}
var desc = gOPD(function () {}, 'name');
return !!desc && !!desc.configurable;
};
var $bind = Function.prototype.bind;
functionsHaveNames.boundFunctionsHaveNames = function boundFunctionsHaveNames() {
return functionsHaveNames() && typeof $bind === 'function' && function f() {}.bind().name !== '';
};
module.exports = functionsHaveNames;
},{}],39:[function(require,module,exports){
'use strict';
var undefined;
var $SyntaxError = SyntaxError;
var $Function = Function;
var $TypeError = TypeError;
// eslint-disable-next-line consistent-return
var getEvalledConstructor = function (expressionSyntax) {
try {
return $Function('"use strict"; return (' + expressionSyntax + ').constructor;')();
} catch (e) {}
};
var $gOPD = Object.getOwnPropertyDescriptor;
if ($gOPD) {
try {
$gOPD({}, '');
} catch (e) {
$gOPD = null; // this is IE 8, which has a broken gOPD
}
}
var throwTypeError = function () {
throw new $TypeError();
};
var ThrowTypeError = $gOPD
? (function () {
try {
// eslint-disable-next-line no-unused-expressions, no-caller, no-restricted-properties
arguments.callee; // IE 8 does not throw here
return throwTypeError;
} catch (calleeThrows) {
try {
// IE 8 throws on Object.getOwnPropertyDescriptor(arguments, '')
return $gOPD(arguments, 'callee').get;
} catch (gOPDthrows) {
return throwTypeError;
}
}
}())
: throwTypeError;
var hasSymbols = require('has-symbols')();
var getProto = Object.getPrototypeOf || function (x) { return x.__proto__; }; // eslint-disable-line no-proto
var needsEval = {};
var TypedArray = typeof Uint8Array === 'undefined' ? undefined : getProto(Uint8Array);
var INTRINSICS = {
'%AggregateError%': typeof AggregateError === 'undefined' ? undefined : AggregateError,
'%Array%': Array,
'%ArrayBuffer%': typeof ArrayBuffer === 'undefined' ? undefined : ArrayBuffer,
'%ArrayIteratorPrototype%': hasSymbols ? getProto([][Symbol.iterator]()) : undefined,
'%AsyncFromSyncIteratorPrototype%': undefined,
'%AsyncFunction%': needsEval,
'%AsyncGenerator%': needsEval,
'%AsyncGeneratorFunction%': needsEval,
'%AsyncIteratorPrototype%': needsEval,
'%Atomics%': typeof Atomics === 'undefined' ? undefined : Atomics,
'%BigInt%': typeof BigInt === 'undefined' ? undefined : BigInt,
'%Boolean%': Boolean,
'%DataView%': typeof DataView === 'undefined' ? undefined : DataView,
'%Date%': Date,
'%decodeURI%': decodeURI,
'%decodeURIComponent%': decodeURIComponent,
'%encodeURI%': encodeURI,
'%encodeURIComponent%': encodeURIComponent,
'%Error%': Error,
'%eval%': eval, // eslint-disable-line no-eval
'%EvalError%': EvalError,
'%Float32Array%': typeof Float32Array === 'undefined' ? undefined : Float32Array,
'%Float64Array%': typeof Float64Array === 'undefined' ? undefined : Float64Array,
'%FinalizationRegistry%': typeof FinalizationRegistry === 'undefined' ? undefined : FinalizationRegistry,
'%Function%': $Function,
'%GeneratorFunction%': needsEval,
'%Int8Array%': typeof Int8Array === 'undefined' ? undefined : Int8Array,
'%Int16Array%': typeof Int16Array === 'undefined' ? undefined : Int16Array,
'%Int32Array%': typeof Int32Array === 'undefined' ? undefined : Int32Array,
'%isFinite%': isFinite,
'%isNaN%': isNaN,
'%IteratorPrototype%': hasSymbols ? getProto(getProto([][Symbol.iterator]())) : undefined,
'%JSON%': typeof JSON === 'object' ? JSON : undefined,
'%Map%': typeof Map === 'undefined' ? undefined : Map,
'%MapIteratorPrototype%': typeof Map === 'undefined' || !hasSymbols ? undefined : getProto(new Map()[Symbol.iterator]()),
'%Math%': Math,
'%Number%': Number,
'%Object%': Object,
'%parseFloat%': parseFloat,
'%parseInt%': parseInt,
'%Promise%': typeof Promise === 'undefined' ? undefined : Promise,
'%Proxy%': typeof Proxy === 'undefined' ? undefined : Proxy,
'%RangeError%': RangeError,
'%ReferenceError%': ReferenceError,
'%Reflect%': typeof Reflect === 'undefined' ? undefined : Reflect,
'%RegExp%': RegExp,
'%Set%': typeof Set === 'undefined' ? undefined : Set,
'%SetIteratorPrototype%': typeof Set === 'undefined' || !hasSymbols ? undefined : getProto(new Set()[Symbol.iterator]()),
'%SharedArrayBuffer%': typeof SharedArrayBuffer === 'undefined' ? undefined : SharedArrayBuffer,
'%String%': String,
'%StringIteratorPrototype%': hasSymbols ? getProto(''[Symbol.iterator]()) : undefined,
'%Symbol%': hasSymbols ? Symbol : undefined,
'%SyntaxError%': $SyntaxError,
'%ThrowTypeError%': ThrowTypeError,
'%TypedArray%': TypedArray,
'%TypeError%': $TypeError,
'%Uint8Array%': typeof Uint8Array === 'undefined' ? undefined : Uint8Array,
'%Uint8ClampedArray%': typeof Uint8ClampedArray === 'undefined' ? undefined : Uint8ClampedArray,
'%Uint16Array%': typeof Uint16Array === 'undefined' ? undefined : Uint16Array,
'%Uint32Array%': typeof Uint32Array === 'undefined' ? undefined : Uint32Array,
'%URIError%': URIError,
'%WeakMap%': typeof WeakMap === 'undefined' ? undefined : WeakMap,
'%WeakRef%': typeof WeakRef === 'undefined' ? undefined : WeakRef,
'%WeakSet%': typeof WeakSet === 'undefined' ? undefined : WeakSet
};
var doEval = function doEval(name) {
var value;
if (name === '%AsyncFunction%') {
value = getEvalledConstructor('async function () {}');
} else if (name === '%GeneratorFunction%') {
value = getEvalledConstructor('function* () {}');
} else if (name === '%AsyncGeneratorFunction%') {
value = getEvalledConstructor('async function* () {}');
} else if (name === '%AsyncGenerator%') {
var fn = doEval('%AsyncGeneratorFunction%');
if (fn) {
value = fn.prototype;
}
} else if (name === '%AsyncIteratorPrototype%') {
var gen = doEval('%AsyncGenerator%');
if (gen) {
value = getProto(gen.prototype);
}
}
INTRINSICS[name] = value;
return value;
};
var LEGACY_ALIASES = {
'%ArrayBufferPrototype%': ['ArrayBuffer', 'prototype'],
'%ArrayPrototype%': ['Array', 'prototype'],
'%ArrayProto_entries%': ['Array', 'prototype', 'entries'],
'%ArrayProto_forEach%': ['Array', 'prototype', 'forEach'],
'%ArrayProto_keys%': ['Array', 'prototype', 'keys'],
'%ArrayProto_values%': ['Array', 'prototype', 'values'],
'%AsyncFunctionPrototype%': ['AsyncFunction', 'prototype'],
'%AsyncGenerator%': ['AsyncGeneratorFunction', 'prototype'],
'%AsyncGeneratorPrototype%': ['AsyncGeneratorFunction', 'prototype', 'prototype'],
'%BooleanPrototype%': ['Boolean', 'prototype'],
'%DataViewPrototype%': ['DataView', 'prototype'],
'%DatePrototype%': ['Date', 'prototype'],
'%ErrorPrototype%': ['Error', 'prototype'],
'%EvalErrorPrototype%': ['EvalError', 'prototype'],
'%Float32ArrayPrototype%': ['Float32Array', 'prototype'],
'%Float64ArrayPrototype%': ['Float64Array', 'prototype'],
'%FunctionPrototype%': ['Function', 'prototype'],
'%Generator%': ['GeneratorFunction', 'prototype'],
'%GeneratorPrototype%': ['GeneratorFunction', 'prototype', 'prototype'],
'%Int8ArrayPrototype%': ['Int8Array', 'prototype'],
'%Int16ArrayPrototype%': ['Int16Array', 'prototype'],
'%Int32ArrayPrototype%': ['Int32Array', 'prototype'],
'%JSONParse%': ['JSON', 'parse'],
'%JSONStringify%': ['JSON', 'stringify'],
'%MapPrototype%': ['Map', 'prototype'],
'%NumberPrototype%': ['Number', 'prototype'],
'%ObjectPrototype%': ['Object', 'prototype'],
'%ObjProto_toString%': ['Object', 'prototype', 'toString'],
'%ObjProto_valueOf%': ['Object', 'prototype', 'valueOf'],
'%PromisePrototype%': ['Promise', 'prototype'],
'%PromiseProto_then%': ['Promise', 'prototype', 'then'],
'%Promise_all%': ['Promise', 'all'],
'%Promise_reject%': ['Promise', 'reject'],
'%Promise_resolve%': ['Promise', 'resolve'],
'%RangeErrorPrototype%': ['RangeError', 'prototype'],
'%ReferenceErrorPrototype%': ['ReferenceError', 'prototype'],
'%RegExpPrototype%': ['RegExp', 'prototype'],
'%SetPrototype%': ['Set', 'prototype'],
'%SharedArrayBufferPrototype%': ['SharedArrayBuffer', 'prototype'],
'%StringPrototype%': ['String', 'prototype'],
'%SymbolPrototype%': ['Symbol', 'prototype'],
'%SyntaxErrorPrototype%': ['SyntaxError', 'prototype'],
'%TypedArrayPrototype%': ['TypedArray', 'prototype'],
'%TypeErrorPrototype%': ['TypeError', 'prototype'],
'%Uint8ArrayPrototype%': ['Uint8Array', 'prototype'],
'%Uint8ClampedArrayPrototype%': ['Uint8ClampedArray', 'prototype'],
'%Uint16ArrayPrototype%': ['Uint16Array', 'prototype'],
'%Uint32ArrayPrototype%': ['Uint32Array', 'prototype'],
'%URIErrorPrototype%': ['URIError', 'prototype'],
'%WeakMapPrototype%': ['WeakMap', 'prototype'],
'%WeakSetPrototype%': ['WeakSet', 'prototype']
};
var bind = require('function-bind');
var hasOwn = require('has');
var $concat = bind.call(Function.call, Array.prototype.concat);
var $spliceApply = bind.call(Function.apply, Array.prototype.splice);
var $replace = bind.call(Function.call, String.prototype.replace);
var $strSlice = bind.call(Function.call, String.prototype.slice);
/* adapted from https://github.com/lodash/lodash/blob/4.17.15/dist/lodash.js#L6735-L6744 */
var rePropName = /[^%.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|%$))/g;
var reEscapeChar = /\\(\\)?/g; /** Used to match backslashes in property paths. */
var stringToPath = function stringToPath(string) {
var first = $strSlice(string, 0, 1);
var last = $strSlice(string, -1);
if (first === '%' && last !== '%') {
throw new $SyntaxError('invalid intrinsic syntax, expected closing `%`');
} else if (last === '%' && first !== '%') {
throw new $SyntaxError('invalid intrinsic syntax, expected opening `%`');
}
var result = [];
$replace(string, rePropName, function (match, number, quote, subString) {
result[result.length] = quote ? $replace(subString, reEscapeChar, '$1') : number || match;
});
return result;
};
/* end adaptation */
var getBaseIntrinsic = function getBaseIntrinsic(name, allowMissing) {
var intrinsicName = name;
var alias;
if (hasOwn(LEGACY_ALIASES, intrinsicName)) {
alias = LEGACY_ALIASES[intrinsicName];
intrinsicName = '%' + alias[0] + '%';
}
if (hasOwn(INTRINSICS, intrinsicName)) {
var value = INTRINSICS[intrinsicName];
if (value === needsEval) {
value = doEval(intrinsicName);
}
if (typeof value === 'undefined' && !allowMissing) {
throw new $TypeError('intrinsic ' + name + ' exists, but is not available. Please file an issue!');
}
return {
alias: alias,
name: intrinsicName,
value: value
};
}
throw new $SyntaxError('intrinsic ' + name + ' does not exist!');
};
module.exports = function GetIntrinsic(name, allowMissing) {
if (typeof name !== 'string' || name.length === 0) {
throw new $TypeError('intrinsic name must be a non-empty string');
}
if (arguments.length > 1 && typeof allowMissing !== 'boolean') {
throw new $TypeError('"allowMissing" argument must be a boolean');
}
var parts = stringToPath(name);
var intrinsicBaseName = parts.length > 0 ? parts[0] : '';
var intrinsic = getBaseIntrinsic('%' + intrinsicBaseName + '%', allowMissing);
var intrinsicRealName = intrinsic.name;
var value = intrinsic.value;
var skipFurtherCaching = false;
var alias = intrinsic.alias;
if (alias) {
intrinsicBaseName = alias[0];
$spliceApply(parts, $concat([0, 1], alias));
}
for (var i = 1, isOwn = true; i < parts.length; i += 1) {
var part = parts[i];
var first = $strSlice(part, 0, 1);
var last = $strSlice(part, -1);
if (
(
(first === '"' || first === "'" || first === '`')
|| (last === '"' || last === "'" || last === '`')
)
&& first !== last
) {
throw new $SyntaxError('property names with quotes must have matching quotes');
}
if (part === 'constructor' || !isOwn) {
skipFurtherCaching = true;
}
intrinsicBaseName += '.' + part;
intrinsicRealName = '%' + intrinsicBaseName + '%';
if (hasOwn(INTRINSICS, intrinsicRealName)) {
value = INTRINSICS[intrinsicRealName];
} else if (value != null) {
if (!(part in value)) {
if (!allowMissing) {
throw new $TypeError('base intrinsic for ' + name + ' exists, but the property is not available.');
}
return void undefined;
}
if ($gOPD && (i + 1) >= parts.length) {
var desc = $gOPD(value, part);
isOwn = !!desc;
// By convention, when a data property is converted to an accessor
// property to emulate a data property that does not suffer from
// the override mistake, that accessor's getter is marked with
// an `originalValue` property. Here, when we detect this, we
// uphold the illusion by pretending to see that original data
// property, i.e., returning the value rather than the getter
// itself.
if (isOwn && 'get' in desc && !('originalValue' in desc.get)) {
value = desc.get;
} else {
value = value[part];
}
} else {
isOwn = hasOwn(value, part);
value = value[part];
}
if (isOwn && !skipFurtherCaching) {
INTRINSICS[intrinsicRealName] = value;
}
}
}
return value;
};
},{"function-bind":37,"has":45,"has-symbols":42}],40:[function(require,module,exports){
(function (global){(function (){
'use strict';
var $BigInt = global.BigInt;
module.exports = function hasNativeBigInts() {
return typeof $BigInt === 'function'
&& typeof BigInt === 'function'
&& typeof $BigInt(42) === 'bigint' // eslint-disable-line no-magic-numbers
&& typeof BigInt(42) === 'bigint'; // eslint-disable-line no-magic-numbers
};
}).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],41:[function(require,module,exports){
'use strict';
var GetIntrinsic = require('get-intrinsic');
var $defineProperty = GetIntrinsic('%Object.defineProperty%', true);
var hasPropertyDescriptors = function hasPropertyDescriptors() {
if ($defineProperty) {
try {
$defineProperty({}, 'a', { value: 1 });
return true;
} catch (e) {
// IE 8 has a broken defineProperty
return false;
}
}
return false;
};
hasPropertyDescriptors.hasArrayLengthDefineBug = function hasArrayLengthDefineBug() {
// node v0.6 has a bug where array lengths can be Set but not Defined
if (!hasPropertyDescriptors()) {
return null;
}
try {
return $defineProperty([], 'length', { value: 1 }).length !== 1;
} catch (e) {
// In Firefox 4-22, defining length on an array throws an exception.
return true;
}
};
module.exports = hasPropertyDescriptors;
},{"get-intrinsic":39}],42:[function(require,module,exports){
'use strict';
var origSymbol = typeof Symbol !== 'undefined' && Symbol;
var hasSymbolSham = require('./shams');
module.exports = function hasNativeSymbols() {
if (typeof origSymbol !== 'function') { return false; }
if (typeof Symbol !== 'function') { return false; }
if (typeof origSymbol('foo') !== 'symbol') { return false; }
if (typeof Symbol('bar') !== 'symbol') { return false; }
return hasSymbolSham();
};
},{"./shams":43}],43:[function(require,module,exports){
'use strict';
/* eslint complexity: [2, 18], max-statements: [2, 33] */
module.exports = function hasSymbols() {
if (typeof Symbol !== 'function' || typeof Object.getOwnPropertySymbols !== 'function') { return false; }
if (typeof Symbol.iterator === 'symbol') { return true; }
var obj = {};
var sym = Symbol('test');
var symObj = Object(sym);
if (typeof sym === 'string') { return false; }
if (Object.prototype.toString.call(sym) !== '[object Symbol]') { return false; }
if (Object.prototype.toString.call(symObj) !== '[object Symbol]') { return false; }
// temp disabled per https://github.com/ljharb/object.assign/issues/17
// if (sym instanceof Symbol) { return false; }
// temp disabled per https://github.com/WebReflection/get-own-property-symbols/issues/4
// if (!(symObj instanceof Symbol)) { return false; }
// if (typeof Symbol.prototype.toString !== 'function') { return false; }
// if (String(sym) !== Symbol.prototype.toString.call(sym)) { return false; }
var symVal = 42;
obj[sym] = symVal;
for (sym in obj) { return false; } // eslint-disable-line no-restricted-syntax, no-unreachable-loop
if (typeof Object.keys === 'function' && Object.keys(obj).length !== 0) { return false; }
if (typeof Object.getOwnPropertyNames === 'function' && Object.getOwnPropertyNames(obj).length !== 0) { return false; }
var syms = Object.getOwnPropertySymbols(obj);
if (syms.length !== 1 || syms[0] !== sym) { return false; }
if (!Object.prototype.propertyIsEnumerable.call(obj, sym)) { return false; }
if (typeof Object.getOwnPropertyDescriptor === 'function') {
var descriptor = Object.getOwnPropertyDescriptor(obj, sym);
if (descriptor.value !== symVal || descriptor.enumerable !== true) { return false; }
}
return true;
};
},{}],44:[function(require,module,exports){
'use strict';
var hasSymbols = require('has-symbols/shams');
module.exports = function hasToStringTagShams() {
return hasSymbols() && !!Symbol.toStringTag;
};
},{"has-symbols/shams":43}],45:[function(require,module,exports){
'use strict';
var bind = require('function-bind');
module.exports = bind.call(Function.call, Object.prototype.hasOwnProperty);
},{"function-bind":37}],46:[function(require,module,exports){
/*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */
exports.read = function (buffer, offset, isLE, mLen, nBytes) {
var e, m
var eLen = (nBytes * 8) - mLen - 1
var eMax = (1 << eLen) - 1
var eBias = eMax >> 1
var nBits = -7
var i = isLE ? (nBytes - 1) : 0
var d = isLE ? -1 : 1
var s = buffer[offset + i]
i += d
e = s & ((1 << (-nBits)) - 1)
s >>= (-nBits)
nBits += eLen
for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}
m = e & ((1 << (-nBits)) - 1)
e >>= (-nBits)
nBits += mLen
for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}
if (e === 0) {
e = 1 - eBias
} else if (e === eMax) {
return m ? NaN : ((s ? -1 : 1) * Infinity)
} else {
m = m + Math.pow(2, mLen)
e = e - eBias
}
return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
}
exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
var e, m, c
var eLen = (nBytes * 8) - mLen - 1
var eMax = (1 << eLen) - 1
var eBias = eMax >> 1
var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
var i = isLE ? 0 : (nBytes - 1)
var d = isLE ? 1 : -1
var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
value = Math.abs(value)
if (isNaN(value) || value === Infinity) {
m = isNaN(value) ? 1 : 0
e = eMax
} else {
e = Math.floor(Math.log(value) / Math.LN2)
if (value * (c = Math.pow(2, -e)) < 1) {
e--
c *= 2
}
if (e + eBias >= 1) {
value += rt / c
} else {
value += rt * Math.pow(2, 1 - eBias)
}
if (value * c >= 2) {
e++
c /= 2
}
if (e + eBias >= eMax) {
m = 0
e = eMax
} else if (e + eBias >= 1) {
m = ((value * c) - 1) * Math.pow(2, mLen)
e = e + eBias
} else {
m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
e = 0
}
}
for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
e = (e << mLen) | m
eLen += mLen
for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
buffer[offset + i - d] |= s * 128
}
},{}],47:[function(require,module,exports){
if (typeof Object.create === 'function') {
// implementation from standard node.js 'util' module
module.exports = function inherits(ctor, superCtor) {
if (superCtor) {
ctor.super_ = superCtor
ctor.prototype = Object.create(superCtor.prototype, {
constructor: {
value: ctor,
enumerable: false,
writable: true,
configurable: true
}
})
}
};
} else {
// old school shim for old browsers
module.exports = function inherits(ctor, superCtor) {
if (superCtor) {
ctor.super_ = superCtor
var TempCtor = function () {}
TempCtor.prototype = superCtor.prototype
ctor.prototype = new TempCtor()
ctor.prototype.constructor = ctor
}
}
}
},{}],48:[function(require,module,exports){
'use strict';
var hasToStringTag = require('has-tostringtag/shams')();
var callBound = require('call-bind/callBound');
var $toString = callBound('Object.prototype.toString');
var isStandardArguments = function isArguments(value) {
if (hasToStringTag && value && typeof value === 'object' && Symbol.toStringTag in value) {
return false;
}
return $toString(value) === '[object Arguments]';
};
var isLegacyArguments = function isArguments(value) {
if (isStandardArguments(value)) {
return true;
}
return value !== null &&
typeof value === 'object' &&
typeof value.length === 'number' &&
value.length >= 0 &&
$toString(value) !== '[object Array]' &&
$toString(value.callee) === '[object Function]';
};
var supportsStandardArguments = (function () {
return isStandardArguments(arguments);
}());
isStandardArguments.isLegacyArguments = isLegacyArguments; // for tests
module.exports = supportsStandardArguments ? isStandardArguments : isLegacyArguments;
},{"call-bind/callBound":11,"has-tostringtag/shams":44}],49:[function(require,module,exports){
'use strict';
var hasBigInts = require('has-bigints')();
if (hasBigInts) {
var bigIntValueOf = BigInt.prototype.valueOf;
var tryBigInt = function tryBigIntObject(value) {
try {
bigIntValueOf.call(value);
return true;
} catch (e) {
}
return false;
};
module.exports = function isBigInt(value) {
if (
value === null
|| typeof value === 'undefined'
|| typeof value === 'boolean'
|| typeof value === 'string'
|| typeof value === 'number'
|| typeof value === 'symbol'
|| typeof value === 'function'
) {
return false;
}
if (typeof value === 'bigint') {
return true;
}
return tryBigInt(value);
};
} else {
module.exports = function isBigInt(value) {
return false && value;
};
}
},{"has-bigints":40}],50:[function(require,module,exports){
'use strict';
var callBound = require('call-bind/callBound');
var $boolToStr = callBound('Boolean.prototype.toString');
var $toString = callBound('Object.prototype.toString');
var tryBooleanObject = function booleanBrandCheck(value) {
try {
$boolToStr(value);
return true;
} catch (e) {
return false;
}
};
var boolClass = '[object Boolean]';
var hasToStringTag = require('has-tostringtag/shams')();
module.exports = function isBoolean(value) {
if (typeof value === 'boolean') {
return true;
}
if (value === null || typeof value !== 'object') {
return false;
}
return hasToStringTag && Symbol.toStringTag in value ? tryBooleanObject(value) : $toString(value) === boolClass;
};
},{"call-bind/callBound":11,"has-tostringtag/shams":44}],51:[function(require,module,exports){
'use strict';
var fnToStr = Function.prototype.toString;
var reflectApply = typeof Reflect === 'object' && Reflect !== null && Reflect.apply;
var badArrayLike;
var isCallableMarker;
if (typeof reflectApply === 'function' && typeof Object.defineProperty === 'function') {
try {
badArrayLike = Object.defineProperty({}, 'length', {
get: function () {
throw isCallableMarker;
}
});
isCallableMarker = {};
// eslint-disable-next-line no-throw-literal
reflectApply(function () { throw 42; }, null, badArrayLike);
} catch (_) {
if (_ !== isCallableMarker) {
reflectApply = null;
}
}
} else {
reflectApply = null;
}
var constructorRegex = /^\s*class\b/;
var isES6ClassFn = function isES6ClassFunction(value) {
try {
var fnStr = fnToStr.call(value);
return constructorRegex.test(fnStr);
} catch (e) {
return false; // not a function
}
};
var tryFunctionObject = function tryFunctionToStr(value) {
try {
if (isES6ClassFn(value)) { return false; }
fnToStr.call(value);
return true;
} catch (e) {
return false;
}
};
var toStr = Object.prototype.toString;
var fnClass = '[object Function]';
var genClass = '[object GeneratorFunction]';
var hasToStringTag = typeof Symbol === 'function' && !!Symbol.toStringTag; // better: use `has-tostringtag`
/* globals document: false */
var documentDotAll = typeof document === 'object' && typeof document.all === 'undefined' && document.all !== undefined ? document.all : {};
module.exports = reflectApply
? function isCallable(value) {
if (value === documentDotAll) { return true; }
if (!value) { return false; }
if (typeof value !== 'function' && typeof value !== 'object') { return false; }
if (typeof value === 'function' && !value.prototype) { return true; }
try {
reflectApply(value, null, badArrayLike);
} catch (e) {
if (e !== isCallableMarker) { return false; }
}
return !isES6ClassFn(value);
}
: function isCallable(value) {
if (value === documentDotAll) { return true; }
if (!value) { return false; }
if (typeof value !== 'function' && typeof value !== 'object') { return false; }
if (typeof value === 'function' && !value.prototype) { return true; }
if (hasToStringTag) { return tryFunctionObject(value); }
if (isES6ClassFn(value)) { return false; }
var strClass = toStr.call(value);
return strClass === fnClass || strClass === genClass;
};
},{}],52:[function(require,module,exports){
'use strict';
var getDay = Date.prototype.getDay;
var tryDateObject = function tryDateGetDayCall(value) {
try {
getDay.call(value);
return true;
} catch (e) {
return false;
}
};
var toStr = Object.prototype.toString;
var dateClass = '[object Date]';
var hasToStringTag = require('has-tostringtag/shams')();
module.exports = function isDateObject(value) {
if (typeof value !== 'object' || value === null) {
return false;
}
return hasToStringTag ? tryDateObject(value) : toStr.call(value) === dateClass;
};
},{"has-tostringtag/shams":44}],53:[function(require,module,exports){
'use strict';
var $Map = typeof Map === 'function' && Map.prototype ? Map : null;
var $Set = typeof Set === 'function' && Set.prototype ? Set : null;
var exported;
if (!$Map) {
// eslint-disable-next-line no-unused-vars
exported = function isMap(x) {
// `Map` is not present in this environment.
return false;
};
}
var $mapHas = $Map ? Map.prototype.has : null;
var $setHas = $Set ? Set.prototype.has : null;
if (!exported && !$mapHas) {
// eslint-disable-next-line no-unused-vars
exported = function isMap(x) {
// `Map` does not have a `has` method
return false;
};
}
module.exports = exported || function isMap(x) {
if (!x || typeof x !== 'object') {
return false;
}
try {
$mapHas.call(x);
if ($setHas) {
try {
$setHas.call(x);
} catch (e) {
return true;
}
}
return x instanceof $Map; // core-js workaround, pre-v2.5.0
} catch (e) {}
return false;
};
},{}],54:[function(require,module,exports){
'use strict';
var numToStr = Number.prototype.toString;
var tryNumberObject = function tryNumberObject(value) {
try {
numToStr.call(value);
return true;
} catch (e) {
return false;
}
};
var toStr = Object.prototype.toString;
var numClass = '[object Number]';
var hasToStringTag = require('has-tostringtag/shams')();
module.exports = function isNumberObject(value) {
if (typeof value === 'number') {
return true;
}
if (typeof value !== 'object') {
return false;
}
return hasToStringTag ? tryNumberObject(value) : toStr.call(value) === numClass;
};
},{"has-tostringtag/shams":44}],55:[function(require,module,exports){
'use strict';
var callBound = require('call-bind/callBound');
var hasToStringTag = require('has-tostringtag/shams')();
var has;
var $exec;
var isRegexMarker;
var badStringifier;
if (hasToStringTag) {
has = callBound('Object.prototype.hasOwnProperty');
$exec = callBound('RegExp.prototype.exec');
isRegexMarker = {};
var throwRegexMarker = function () {
throw isRegexMarker;
};
badStringifier = {
toString: throwRegexMarker,
valueOf: throwRegexMarker
};
if (typeof Symbol.toPrimitive === 'symbol') {
badStringifier[Symbol.toPrimitive] = throwRegexMarker;
}
}
var $toString = callBound('Object.prototype.toString');
var gOPD = Object.getOwnPropertyDescriptor;
var regexClass = '[object RegExp]';
module.exports = hasToStringTag
// eslint-disable-next-line consistent-return
? function isRegex(value) {
if (!value || typeof value !== 'object') {
return false;
}
var descriptor = gOPD(value, 'lastIndex');
var hasLastIndexDataProperty = descriptor && has(descriptor, 'value');
if (!hasLastIndexDataProperty) {
return false;
}
try {
$exec(value, badStringifier);
} catch (e) {
return e === isRegexMarker;
}
}
: function isRegex(value) {
// In older browsers, typeof regex incorrectly returns 'function'
if (!value || (typeof value !== 'object' && typeof value !== 'function')) {
return false;
}
return $toString(value) === regexClass;
};
},{"call-bind/callBound":11,"has-tostringtag/shams":44}],56:[function(require,module,exports){
'use strict';
var $Map = typeof Map === 'function' && Map.prototype ? Map : null;
var $Set = typeof Set === 'function' && Set.prototype ? Set : null;
var exported;
if (!$Set) {
// eslint-disable-next-line no-unused-vars
exported = function isSet(x) {
// `Set` is not present in this environment.
return false;
};
}
var $mapHas = $Map ? Map.prototype.has : null;
var $setHas = $Set ? Set.prototype.has : null;
if (!exported && !$setHas) {
// eslint-disable-next-line no-unused-vars
exported = function isSet(x) {
// `Set` does not have a `has` method
return false;
};
}
module.exports = exported || function isSet(x) {
if (!x || typeof x !== 'object') {
return false;
}
try {
$setHas.call(x);
if ($mapHas) {
try {
$mapHas.call(x);
} catch (e) {
return true;
}
}
return x instanceof $Set; // core-js workaround, pre-v2.5.0
} catch (e) {}
return false;
};
},{}],57:[function(require,module,exports){
'use strict';
var strValue = String.prototype.valueOf;
var tryStringObject = function tryStringObject(value) {
try {
strValue.call(value);
return true;
} catch (e) {
return false;
}
};
var toStr = Object.prototype.toString;
var strClass = '[object String]';
var hasToStringTag = require('has-tostringtag/shams')();
module.exports = function isString(value) {
if (typeof value === 'string') {
return true;
}
if (typeof value !== 'object') {
return false;
}
return hasToStringTag ? tryStringObject(value) : toStr.call(value) === strClass;
};
},{"has-tostringtag/shams":44}],58:[function(require,module,exports){
'use strict';
var toStr = Object.prototype.toString;
var hasSymbols = require('has-symbols')();
if (hasSymbols) {
var symToStr = Symbol.prototype.toString;
var symStringRegex = /^Symbol\(.*\)$/;
var isSymbolObject = function isRealSymbolObject(value) {
if (typeof value.valueOf() !== 'symbol') {
return false;
}
return symStringRegex.test(symToStr.call(value));
};
module.exports = function isSymbol(value) {
if (typeof value === 'symbol') {
return true;
}
if (toStr.call(value) !== '[object Symbol]') {
return false;
}
try {
return isSymbolObject(value);
} catch (e) {
return false;
}
};
} else {
module.exports = function isSymbol(value) {
// this environment does not support Symbols.
return false && value;
};
}
},{"has-symbols":42}],59:[function(require,module,exports){
(function (global){(function (){
'use strict';
var forEach = require('foreach');
var availableTypedArrays = require('available-typed-arrays');
var callBound = require('call-bind/callBound');
var $toString = callBound('Object.prototype.toString');
var hasToStringTag = require('has-tostringtag/shams')();
var g = typeof globalThis === 'undefined' ? global : globalThis;
var typedArrays = availableTypedArrays();
var $indexOf = callBound('Array.prototype.indexOf', true) || function indexOf(array, value) {
for (var i = 0; i < array.length; i += 1) {
if (array[i] === value) {
return i;
}
}
return -1;
};
var $slice = callBound('String.prototype.slice');
var toStrTags = {};
var gOPD = require('es-abstract/helpers/getOwnPropertyDescriptor');
var getPrototypeOf = Object.getPrototypeOf; // require('getprototypeof');
if (hasToStringTag && gOPD && getPrototypeOf) {
forEach(typedArrays, function (typedArray) {
var arr = new g[typedArray]();
if (Symbol.toStringTag in arr) {
var proto = getPrototypeOf(arr);
var descriptor = gOPD(proto, Symbol.toStringTag);
if (!descriptor) {
var superProto = getPrototypeOf(proto);
descriptor = gOPD(superProto, Symbol.toStringTag);
}
toStrTags[typedArray] = descriptor.get;
}
});
}
var tryTypedArrays = function tryAllTypedArrays(value) {
var anyTrue = false;
forEach(toStrTags, function (getter, typedArray) {
if (!anyTrue) {
try {
anyTrue = getter.call(value) === typedArray;
} catch (e) { /**/ }
}
});
return anyTrue;
};
module.exports = function isTypedArray(value) {
if (!value || typeof value !== 'object') { return false; }
if (!hasToStringTag || !(Symbol.toStringTag in value)) {
var tag = $slice($toString(value), 8, -1);
return $indexOf(typedArrays, tag) > -1;
}
if (!gOPD) { return false; }
return tryTypedArrays(value);
};
}).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"available-typed-arrays":7,"call-bind/callBound":11,"es-abstract/helpers/getOwnPropertyDescriptor":26,"foreach":35,"has-tostringtag/shams":44}],60:[function(require,module,exports){
'use strict';
var $WeakMap = typeof WeakMap === 'function' && WeakMap.prototype ? WeakMap : null;
var $WeakSet = typeof WeakSet === 'function' && WeakSet.prototype ? WeakSet : null;
var exported;
if (!$WeakMap) {
// eslint-disable-next-line no-unused-vars
exported = function isWeakMap(x) {
// `WeakMap` is not present in this environment.
return false;
};
}
var $mapHas = $WeakMap ? $WeakMap.prototype.has : null;
var $setHas = $WeakSet ? $WeakSet.prototype.has : null;
if (!exported && !$mapHas) {
// eslint-disable-next-line no-unused-vars
exported = function isWeakMap(x) {
// `WeakMap` does not have a `has` method
return false;
};
}
module.exports = exported || function isWeakMap(x) {
if (!x || typeof x !== 'object') {
return false;
}
try {
$mapHas.call(x, $mapHas);
if ($setHas) {
try {
$setHas.call(x, $setHas);
} catch (e) {
return true;
}
}
return x instanceof $WeakMap; // core-js workaround, pre-v3
} catch (e) {}
return false;
};
},{}],61:[function(require,module,exports){
'use strict';
var GetIntrinsic = require('get-intrinsic');
var callBound = require('call-bind/callBound');
var $WeakSet = GetIntrinsic('%WeakSet%', true);
var $setHas = callBound('WeakSet.prototype.has', true);
if ($setHas) {
var $mapHas = callBound('WeakMap.prototype.has', true);
module.exports = function isWeakSet(x) {
if (!x || typeof x !== 'object') {
return false;
}
try {
$setHas(x, $setHas);
if ($mapHas) {
try {
$mapHas(x, $mapHas);
} catch (e) {
return true;
}
}
return x instanceof $WeakSet; // core-js workaround, pre-v3
} catch (e) {}
return false;
};
} else {
// eslint-disable-next-line no-unused-vars
module.exports = function isWeakSet(x) {
// `WeakSet` does not exist, or does not have a `has` method
return false;
};
}
},{"call-bind/callBound":11,"get-intrinsic":39}],62:[function(require,module,exports){
arguments[4][15][0].apply(exports,arguments)
},{"dup":15}],63:[function(require,module,exports){
'use strict';
var has = require('has');
var hasPropertyDescriptors = require('has-property-descriptors');
var isArray = require('isarray');
var functionsHaveConfigurableNames = require('functions-have-names').functionsHaveConfigurableNames();
var $defineProperty = hasPropertyDescriptors() && Object.defineProperty;
var hasArrayLengthDefineBug = hasPropertyDescriptors.hasArrayLengthDefineBug();
var gOPD = Object.getOwnPropertyDescriptor;
var $TypeError = TypeError;
var $SyntaxError = SyntaxError;
module.exports = function mockProperty(obj, prop, options) {
if (has(options, 'nonEnumerable') && typeof options.nonEnumerable !== 'boolean') {
throw new $TypeError('`nonEnumerable` option, when present, must be a boolean');
}
if (has(options, 'nonWritable') && typeof options.nonWritable !== 'boolean') {
throw new $TypeError('`nonEnumerable` option, when present, must be a boolean');
}
if (has(options, 'delete') && typeof options['delete'] !== 'boolean') {
throw new $TypeError('`delete` option, when present, must be a boolean');
}
var wantsData = has(options, 'value') || has(options, 'nonWritable');
var wantsAccessor = has(options, 'get') || has(options, 'set');
if (wantsAccessor) {
if (wantsData) {
throw new $TypeError('`value` and `nonWritable` options are mutually exclusive with `get`/`set` options');
}
if (
(has(options, 'get') && typeof options.get !== 'function' && typeof options.get !== 'undefined')
|| (has(options, 'set') && typeof options.set !== 'function' && typeof options.set !== 'undefined')
) {
throw new $TypeError('`get` and `set` options, when present, must be functions or `undefined`');
}
if (!gOPD || !$defineProperty) {
throw new $SyntaxError('the `get`/`set` options require native getter/setter support');
}
}
if (options['delete'] && (wantsData || wantsAccessor || has(options, 'nonEnumerable'))) {
throw new $TypeError('`delete` option must not be set to true when any of `value`, `get`, `set`, `nonWritable`, or `nonEnumerable` are provided');
}
var objIsArray = isArray(obj);
var origDescriptor = gOPD
? gOPD(obj, prop)
: {
configurable: typeof obj === 'function' && prop === 'name' ? functionsHaveConfigurableNames : true,
enumerable: !(objIsArray && prop === 'length'),
value: obj[prop],
writable: true
};
var origConfigurable = origDescriptor ? origDescriptor.configurable : true;
var origEnumerable = origDescriptor ? origDescriptor.enumerable : true;
if (wantsAccessor) {
var hasGetter = origDescriptor && typeof origDescriptor.get === 'function';
var hasSetter = origDescriptor && typeof origDescriptor.set === 'function';
var hasFutureGetter = has(options, 'get') ? typeof options.get === 'function' : hasGetter;
var hasFutureSetter = has(options, 'set') ? typeof options.set === 'function' : hasSetter;
if (!hasFutureGetter && !hasFutureSetter) {
throw new $TypeError('when the `get` or `set` options are provided, the mocked object property must end up with at least one of a getter or a setter function');
}
}
var isChangingEnumerability = has(options, 'nonEnumerable') ? !options.nonEnumerable !== origEnumerable : false;
if (origDescriptor && !origDescriptor.configurable) {
if (isChangingEnumerability) {
throw new $TypeError('`' + prop + '` is nonconfigurable, and can not be changed');
}
if (wantsAccessor) {
if (has(origDescriptor, 'value')) {
throw new $TypeError('`' + prop + '` is a nonconfigurable data property, and can not be changed to an accessor');
}
var isChangingGetter = has(options, 'get') && has(origDescriptor, 'get') && options.get !== origDescriptor.get;
var isChangingSetter = has(options, 'set') && has(origDescriptor, 'set') && options.set !== origDescriptor.set;
if (isChangingGetter || isChangingSetter) {
throw new $TypeError('`' + prop + '` is nonconfigurable, and can not be changed');
}
return function restore() {};
}
if (has(origDescriptor, 'get') || has(origDescriptor, 'set')) {
throw new $TypeError('`' + prop + '` is a nonconfigurable accessor property, and can not be changed to a data property');
}
var isChangingValue = has(options, 'value') && has(origDescriptor, 'value') && options.value !== origDescriptor.value;
var isChangingWriteability = has(options, 'nonWritable') && !options.nonWritable !== origDescriptor.writable;
if ((!origDescriptor.writable && isChangingValue) || isChangingEnumerability || isChangingWriteability) {
throw new $TypeError('`' + prop + '` is nonconfigurable, and can not be changed');
}
if (!isChangingWriteability && !isChangingValue) {
return function restore() {};
}
}
if (options['delete']) {
delete obj[prop]; // eslint-disable-line no-param-reassign
} else if (
wantsData
&& !isChangingEnumerability
&& (!origDescriptor || origDescriptor.enumerable)
&& (!has(options, 'nonWritable') || !options.nonWritable)
&& (!origDescriptor || origDescriptor.writable)
&& (!gOPD || !(prop in obj))
) {
obj[prop] = options.value; // eslint-disable-line no-param-reassign
} else {
if (objIsArray && prop === 'length' && hasArrayLengthDefineBug) {
throw new $SyntaxError('this environment does not support Define on an array’s length');
}
var newEnumerable = has(options, 'nonEnumerable') ? !options.nonEnumerable : origEnumerable;
if (wantsData) {
$defineProperty(obj, prop, {
configurable: origConfigurable,
enumerable: newEnumerable,
value: has(options, 'value') ? options.value : origDescriptor.value,
writable: has(options, 'nonWritable') ? !options.nonWritable : has(origDescriptor, 'writable') ? origDescriptor.writable : true
});
} else if (wantsAccessor) {
var getter = has(options, 'get') ? options.get : origDescriptor && origDescriptor.get;
var setter = has(options, 'set') ? options.set : origDescriptor && origDescriptor.set;
$defineProperty(obj, prop, {
configurable: origConfigurable,
enumerable: newEnumerable,
get: getter,
set: setter
});
} else {
$defineProperty(obj, prop, {
configurable: origConfigurable,
enumerable: newEnumerable
});
}
}
return function restore() {
if (!origDescriptor) {
delete obj[prop]; // eslint-disable-line no-param-reassign
} else if ($defineProperty) {
if (has(origDescriptor, 'writable')) {
$defineProperty(obj, prop, {
configurable: origDescriptor.configurable,
enumerable: origDescriptor.enumerable,
value: origDescriptor.value,
writable: origDescriptor.writable
});
} else {
var oldGetter = origDescriptor && origDescriptor.get;
var oldSetter = origDescriptor && origDescriptor.set;
$defineProperty(obj, prop, {
configurable: origDescriptor.configurable,
enumerable: origDescriptor.enumerable,
get: oldGetter,
set: oldSetter
});
}
} else {
obj[prop] = origDescriptor.value; // eslint-disable-line no-param-reassign
}
};
};
},{"functions-have-names":38,"has":45,"has-property-descriptors":41,"isarray":64}],64:[function(require,module,exports){
arguments[4][15][0].apply(exports,arguments)
},{"dup":15}],65:[function(require,module,exports){
var hasMap = typeof Map === 'function' && Map.prototype;
var mapSizeDescriptor = Object.getOwnPropertyDescriptor && hasMap ? Object.getOwnPropertyDescriptor(Map.prototype, 'size') : null;
var mapSize = hasMap && mapSizeDescriptor && typeof mapSizeDescriptor.get === 'function' ? mapSizeDescriptor.get : null;
var mapForEach = hasMap && Map.prototype.forEach;
var hasSet = typeof Set === 'function' && Set.prototype;
var setSizeDescriptor = Object.getOwnPropertyDescriptor && hasSet ? Object.getOwnPropertyDescriptor(Set.prototype, 'size') : null;
var setSize = hasSet && setSizeDescriptor && typeof setSizeDescriptor.get === 'function' ? setSizeDescriptor.get : null;
var setForEach = hasSet && Set.prototype.forEach;
var hasWeakMap = typeof WeakMap === 'function' && WeakMap.prototype;
var weakMapHas = hasWeakMap ? WeakMap.prototype.has : null;
var hasWeakSet = typeof WeakSet === 'function' && WeakSet.prototype;
var weakSetHas = hasWeakSet ? WeakSet.prototype.has : null;
var hasWeakRef = typeof WeakRef === 'function' && WeakRef.prototype;
var weakRefDeref = hasWeakRef ? WeakRef.prototype.deref : null;
var booleanValueOf = Boolean.prototype.valueOf;
var objectToString = Object.prototype.toString;
var functionToString = Function.prototype.toString;
var $match = String.prototype.match;
var $slice = String.prototype.slice;
var $replace = String.prototype.replace;
var $toUpperCase = String.prototype.toUpperCase;
var $toLowerCase = String.prototype.toLowerCase;
var $test = RegExp.prototype.test;
var $concat = Array.prototype.concat;
var $join = Array.prototype.join;
var $arrSlice = Array.prototype.slice;
var $floor = Math.floor;
var bigIntValueOf = typeof BigInt === 'function' ? BigInt.prototype.valueOf : null;
var gOPS = Object.getOwnPropertySymbols;
var symToString = typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol' ? Symbol.prototype.toString : null;
var hasShammedSymbols = typeof Symbol === 'function' && typeof Symbol.iterator === 'object';
// ie, `has-tostringtag/shams
var toStringTag = typeof Symbol === 'function' && Symbol.toStringTag && (typeof Symbol.toStringTag === hasShammedSymbols ? 'object' : 'symbol')
? Symbol.toStringTag
: null;
var isEnumerable = Object.prototype.propertyIsEnumerable;
var gPO = (typeof Reflect === 'function' ? Reflect.getPrototypeOf : Object.getPrototypeOf) || (
[].__proto__ === Array.prototype // eslint-disable-line no-proto
? function (O) {
return O.__proto__; // eslint-disable-line no-proto
}
: null
);
function addNumericSeparator(num, str) {
if (
num === Infinity
|| num === -Infinity
|| num !== num
|| (num && num > -1000 && num < 1000)
|| $test.call(/e/, str)
) {
return str;
}
var sepRegex = /[0-9](?=(?:[0-9]{3})+(?![0-9]))/g;
if (typeof num === 'number') {
var int = num < 0 ? -$floor(-num) : $floor(num); // trunc(num)
if (int !== num) {
var intStr = String(int);
var dec = $slice.call(str, intStr.length + 1);
return $replace.call(intStr, sepRegex, '$&_') + '.' + $replace.call($replace.call(dec, /([0-9]{3})/g, '$&_'), /_$/, '');
}
}
return $replace.call(str, sepRegex, '$&_');
}
var inspectCustom = require('./util.inspect').custom;
var inspectSymbol = inspectCustom && isSymbol(inspectCustom) ? inspectCustom : null;
module.exports = function inspect_(obj, options, depth, seen) {
var opts = options || {};
if (has(opts, 'quoteStyle') && (opts.quoteStyle !== 'single' && opts.quoteStyle !== 'double')) {
throw new TypeError('option "quoteStyle" must be "single" or "double"');
}
if (
has(opts, 'maxStringLength') && (typeof opts.maxStringLength === 'number'
? opts.maxStringLength < 0 && opts.maxStringLength !== Infinity
: opts.maxStringLength !== null
)
) {
throw new TypeError('option "maxStringLength", if provided, must be a positive integer, Infinity, or `null`');
}
var customInspect = has(opts, 'customInspect') ? opts.customInspect : true;
if (typeof customInspect !== 'boolean' && customInspect !== 'symbol') {
throw new TypeError('option "customInspect", if provided, must be `true`, `false`, or `\'symbol\'`');
}
if (
has(opts, 'indent')
&& opts.indent !== null
&& opts.indent !== '\t'
&& !(parseInt(opts.indent, 10) === opts.indent && opts.indent > 0)
) {
throw new TypeError('option "indent" must be "\\t", an integer > 0, or `null`');
}
if (has(opts, 'numericSeparator') && typeof opts.numericSeparator !== 'boolean') {
throw new TypeError('option "numericSeparator", if provided, must be `true` or `false`');
}
var numericSeparator = opts.numericSeparator;
if (typeof obj === 'undefined') {
return 'undefined';
}
if (obj === null) {
return 'null';
}
if (typeof obj === 'boolean') {
return obj ? 'true' : 'false';
}
if (typeof obj === 'string') {
return inspectString(obj, opts);
}
if (typeof obj === 'number') {
if (obj === 0) {
return Infinity / obj > 0 ? '0' : '-0';
}
var str = String(obj);
return numericSeparator ? addNumericSeparator(obj, str) : str;
}
if (typeof obj === 'bigint') {
var bigIntStr = String(obj) + 'n';
return numericSeparator ? addNumericSeparator(obj, bigIntStr) : bigIntStr;
}
var maxDepth = typeof opts.depth === 'undefined' ? 5 : opts.depth;
if (typeof depth === 'undefined') { depth = 0; }
if (depth >= maxDepth && maxDepth > 0 && typeof obj === 'object') {
return isArray(obj) ? '[Array]' : '[Object]';
}
var indent = getIndent(opts, depth);
if (typeof seen === 'undefined') {
seen = [];
} else if (indexOf(seen, obj) >= 0) {
return '[Circular]';
}
function inspect(value, from, noIndent) {
if (from) {
seen = $arrSlice.call(seen);
seen.push(from);
}
if (noIndent) {
var newOpts = {
depth: opts.depth
};
if (has(opts, 'quoteStyle')) {
newOpts.quoteStyle = opts.quoteStyle;
}
return inspect_(value, newOpts, depth + 1, seen);
}
return inspect_(value, opts, depth + 1, seen);
}
if (typeof obj === 'function') {
var name = nameOf(obj);
var keys = arrObjKeys(obj, inspect);
return '[Function' + (name ? ': ' + name : ' (anonymous)') + ']' + (keys.length > 0 ? ' { ' + $join.call(keys, ', ') + ' }' : '');
}
if (isSymbol(obj)) {
var symString = hasShammedSymbols ? $replace.call(String(obj), /^(Symbol\(.*\))_[^)]*$/, '$1') : symToString.call(obj);
return typeof obj === 'object' && !hasShammedSymbols ? markBoxed(symString) : symString;
}
if (isElement(obj)) {
var s = '<' + $toLowerCase.call(String(obj.nodeName));
var attrs = obj.attributes || [];
for (var i = 0; i < attrs.length; i++) {
s += ' ' + attrs[i].name + '=' + wrapQuotes(quote(attrs[i].value), 'double', opts);
}
s += '>';
if (obj.childNodes && obj.childNodes.length) { s += '...'; }
s += '</' + $toLowerCase.call(String(obj.nodeName)) + '>';
return s;
}
if (isArray(obj)) {
if (obj.length === 0) { return '[]'; }
var xs = arrObjKeys(obj, inspect);
if (indent && !singleLineValues(xs)) {
return '[' + indentedJoin(xs, indent) + ']';
}
return '[ ' + $join.call(xs, ', ') + ' ]';
}
if (isError(obj)) {
var parts = arrObjKeys(obj, inspect);
if ('cause' in obj && !isEnumerable.call(obj, 'cause')) {
return '{ [' + String(obj) + '] ' + $join.call($concat.call('[cause]: ' + inspect(obj.cause), parts), ', ') + ' }';
}
if (parts.length === 0) { return '[' + String(obj) + ']'; }
return '{ [' + String(obj) + '] ' + $join.call(parts, ', ') + ' }';
}
if (typeof obj === 'object' && customInspect) {
if (inspectSymbol && typeof obj[inspectSymbol] === 'function') {
return obj[inspectSymbol]();
} else if (customInspect !== 'symbol' && typeof obj.inspect === 'function') {
return obj.inspect();
}
}
if (isMap(obj)) {
var mapParts = [];
mapForEach.call(obj, function (value, key) {
mapParts.push(inspect(key, obj, true) + ' => ' + inspect(value, obj));
});
return collectionOf('Map', mapSize.call(obj), mapParts, indent);
}
if (isSet(obj)) {
var setParts = [];
setForEach.call(obj, function (value) {
setParts.push(inspect(value, obj));
});
return collectionOf('Set', setSize.call(obj), setParts, indent);
}
if (isWeakMap(obj)) {
return weakCollectionOf('WeakMap');
}
if (isWeakSet(obj)) {
return weakCollectionOf('WeakSet');
}
if (isWeakRef(obj)) {
return weakCollectionOf('WeakRef');
}
if (isNumber(obj)) {
return markBoxed(inspect(Number(obj)));
}
if (isBigInt(obj)) {
return markBoxed(inspect(bigIntValueOf.call(obj)));
}
if (isBoolean(obj)) {
return markBoxed(booleanValueOf.call(obj));
}
if (isString(obj)) {
return markBoxed(inspect(String(obj)));
}
if (!isDate(obj) && !isRegExp(obj)) {
var ys = arrObjKeys(obj, inspect);
var isPlainObject = gPO ? gPO(obj) === Object.prototype : obj instanceof Object || obj.constructor === Object;
var protoTag = obj instanceof Object ? '' : 'null prototype';
var stringTag = !isPlainObject && toStringTag && Object(obj) === obj && toStringTag in obj ? $slice.call(toStr(obj), 8, -1) : protoTag ? 'Object' : '';
var constructorTag = isPlainObject || typeof obj.constructor !== 'function' ? '' : obj.constructor.name ? obj.constructor.name + ' ' : '';
var tag = constructorTag + (stringTag || protoTag ? '[' + $join.call($concat.call([], stringTag || [], protoTag || []), ': ') + '] ' : '');
if (ys.length === 0) { return tag + '{}'; }
if (indent) {
return tag + '{' + indentedJoin(ys, indent) + '}';
}
return tag + '{ ' + $join.call(ys, ', ') + ' }';
}
return String(obj);
};
function wrapQuotes(s, defaultStyle, opts) {
var quoteChar = (opts.quoteStyle || defaultStyle) === 'double' ? '"' : "'";
return quoteChar + s + quoteChar;
}
function quote(s) {
return $replace.call(String(s), /"/g, '&quot;');
}
function isArray(obj) { return toStr(obj) === '[object Array]' && (!toStringTag || !(typeof obj === 'object' && toStringTag in obj)); }
function isDate(obj) { return toStr(obj) === '[object Date]' && (!toStringTag || !(typeof obj === 'object' && toStringTag in obj)); }
function isRegExp(obj) { return toStr(obj) === '[object RegExp]' && (!toStringTag || !(typeof obj === 'object' && toStringTag in obj)); }
function isError(obj) { return toStr(obj) === '[object Error]' && (!toStringTag || !(typeof obj === 'object' && toStringTag in obj)); }
function isString(obj) { return toStr(obj) === '[object String]' && (!toStringTag || !(typeof obj === 'object' && toStringTag in obj)); }
function isNumber(obj) { return toStr(obj) === '[object Number]' && (!toStringTag || !(typeof obj === 'object' && toStringTag in obj)); }
function isBoolean(obj) { return toStr(obj) === '[object Boolean]' && (!toStringTag || !(typeof obj === 'object' && toStringTag in obj)); }
// Symbol and BigInt do have Symbol.toStringTag by spec, so that can't be used to eliminate false positives
function isSymbol(obj) {
if (hasShammedSymbols) {
return obj && typeof obj === 'object' && obj instanceof Symbol;
}
if (typeof obj === 'symbol') {
return true;
}
if (!obj || typeof obj !== 'object' || !symToString) {
return false;
}
try {
symToString.call(obj);
return true;
} catch (e) {}
return false;
}
function isBigInt(obj) {
if (!obj || typeof obj !== 'object' || !bigIntValueOf) {
return false;
}
try {
bigIntValueOf.call(obj);
return true;
} catch (e) {}
return false;
}
var hasOwn = Object.prototype.hasOwnProperty || function (key) { return key in this; };
function has(obj, key) {
return hasOwn.call(obj, key);
}
function toStr(obj) {
return objectToString.call(obj);
}
function nameOf(f) {
if (f.name) { return f.name; }
var m = $match.call(functionToString.call(f), /^function\s*([\w$]+)/);
if (m) { return m[1]; }
return null;
}
function indexOf(xs, x) {
if (xs.indexOf) { return xs.indexOf(x); }
for (var i = 0, l = xs.length; i < l; i++) {
if (xs[i] === x) { return i; }
}
return -1;
}
function isMap(x) {
if (!mapSize || !x || typeof x !== 'object') {
return false;
}
try {
mapSize.call(x);
try {
setSize.call(x);
} catch (s) {
return true;
}
return x instanceof Map; // core-js workaround, pre-v2.5.0
} catch (e) {}
return false;
}
function isWeakMap(x) {
if (!weakMapHas || !x || typeof x !== 'object') {
return false;
}
try {
weakMapHas.call(x, weakMapHas);
try {
weakSetHas.call(x, weakSetHas);
} catch (s) {
return true;
}
return x instanceof WeakMap; // core-js workaround, pre-v2.5.0
} catch (e) {}
return false;
}
function isWeakRef(x) {
if (!weakRefDeref || !x || typeof x !== 'object') {
return false;
}
try {
weakRefDeref.call(x);
return true;
} catch (e) {}
return false;
}
function isSet(x) {
if (!setSize || !x || typeof x !== 'object') {
return false;
}
try {
setSize.call(x);
try {
mapSize.call(x);
} catch (m) {
return true;
}
return x instanceof Set; // core-js workaround, pre-v2.5.0
} catch (e) {}
return false;
}
function isWeakSet(x) {
if (!weakSetHas || !x || typeof x !== 'object') {
return false;
}
try {
weakSetHas.call(x, weakSetHas);
try {
weakMapHas.call(x, weakMapHas);
} catch (s) {
return true;
}
return x instanceof WeakSet; // core-js workaround, pre-v2.5.0
} catch (e) {}
return false;
}
function isElement(x) {
if (!x || typeof x !== 'object') { return false; }
if (typeof HTMLElement !== 'undefined' && x instanceof HTMLElement) {
return true;
}
return typeof x.nodeName === 'string' && typeof x.getAttribute === 'function';
}
function inspectString(str, opts) {
if (str.length > opts.maxStringLength) {
var remaining = str.length - opts.maxStringLength;
var trailer = '... ' + remaining + ' more character' + (remaining > 1 ? 's' : '');
return inspectString($slice.call(str, 0, opts.maxStringLength), opts) + trailer;
}
// eslint-disable-next-line no-control-regex
var s = $replace.call($replace.call(str, /(['\\])/g, '\\$1'), /[\x00-\x1f]/g, lowbyte);
return wrapQuotes(s, 'single', opts);
}
function lowbyte(c) {
var n = c.charCodeAt(0);
var x = {
8: 'b',
9: 't',
10: 'n',
12: 'f',
13: 'r'
}[n];
if (x) { return '\\' + x; }
return '\\x' + (n < 0x10 ? '0' : '') + $toUpperCase.call(n.toString(16));
}
function markBoxed(str) {
return 'Object(' + str + ')';
}
function weakCollectionOf(type) {
return type + ' { ? }';
}
function collectionOf(type, size, entries, indent) {
var joinedEntries = indent ? indentedJoin(entries, indent) : $join.call(entries, ', ');
return type + ' (' + size + ') {' + joinedEntries + '}';
}
function singleLineValues(xs) {
for (var i = 0; i < xs.length; i++) {
if (indexOf(xs[i], '\n') >= 0) {
return false;
}
}
return true;
}
function getIndent(opts, depth) {
var baseIndent;
if (opts.indent === '\t') {
baseIndent = '\t';
} else if (typeof opts.indent === 'number' && opts.indent > 0) {
baseIndent = $join.call(Array(opts.indent + 1), ' ');
} else {
return null;
}
return {
base: baseIndent,
prev: $join.call(Array(depth + 1), baseIndent)
};
}
function indentedJoin(xs, indent) {
if (xs.length === 0) { return ''; }
var lineJoiner = '\n' + indent.prev + indent.base;
return lineJoiner + $join.call(xs, ',' + lineJoiner) + '\n' + indent.prev;
}
function arrObjKeys(obj, inspect) {
var isArr = isArray(obj);
var xs = [];
if (isArr) {
xs.length = obj.length;
for (var i = 0; i < obj.length; i++) {
xs[i] = has(obj, i) ? inspect(obj[i], obj) : '';
}
}
var syms = typeof gOPS === 'function' ? gOPS(obj) : [];
var symMap;
if (hasShammedSymbols) {
symMap = {};
for (var k = 0; k < syms.length; k++) {
symMap['$' + syms[k]] = syms[k];
}
}
for (var key in obj) { // eslint-disable-line no-restricted-syntax
if (!has(obj, key)) { continue; } // eslint-disable-line no-restricted-syntax, no-continue
if (isArr && String(Number(key)) === key && key < obj.length) { continue; } // eslint-disable-line no-restricted-syntax, no-continue
if (hasShammedSymbols && symMap['$' + key] instanceof Symbol) {
// this is to prevent shammed Symbols, which are stored as strings, from being included in the string key section
continue; // eslint-disable-line no-restricted-syntax, no-continue
} else if ($test.call(/[^\w$]/, key)) {
xs.push(inspect(key, obj) + ': ' + inspect(obj[key], obj));
} else {
xs.push(key + ': ' + inspect(obj[key], obj));
}
}
if (typeof gOPS === 'function') {
for (var j = 0; j < syms.length; j++) {
if (isEnumerable.call(obj, syms[j])) {
xs.push('[' + inspect(syms[j]) + ']: ' + inspect(obj[syms[j]], obj));
}
}
}
return xs;
}
},{"./util.inspect":9}],66:[function(require,module,exports){
'use strict';
var numberIsNaN = function (value) {
return value !== value;
};
module.exports = function is(a, b) {
if (a === 0 && b === 0) {
return 1 / a === 1 / b;
}
if (a === b) {
return true;
}
if (numberIsNaN(a) && numberIsNaN(b)) {
return true;
}
return false;
};
},{}],67:[function(require,module,exports){
'use strict';
var define = require('define-properties');
var callBind = require('call-bind');
var implementation = require('./implementation');
var getPolyfill = require('./polyfill');
var shim = require('./shim');
var polyfill = callBind(getPolyfill(), Object);
define(polyfill, {
getPolyfill: getPolyfill,
implementation: implementation,
shim: shim
});
module.exports = polyfill;
},{"./implementation":66,"./polyfill":68,"./shim":69,"call-bind":12,"define-properties":16}],68:[function(require,module,exports){
'use strict';
var implementation = require('./implementation');
module.exports = function getPolyfill() {
return typeof Object.is === 'function' ? Object.is : implementation;
};
},{"./implementation":66}],69:[function(require,module,exports){
'use strict';
var getPolyfill = require('./polyfill');
var define = require('define-properties');
module.exports = function shimObjectIs() {
var polyfill = getPolyfill();
define(Object, { is: polyfill }, {
is: function testObjectIs() {
return Object.is !== polyfill;
}
});
return polyfill;
};
},{"./polyfill":68,"define-properties":16}],70:[function(require,module,exports){
'use strict';
var keysShim;
if (!Object.keys) {
// modified from https://github.com/es-shims/es5-shim
var has = Object.prototype.hasOwnProperty;
var toStr = Object.prototype.toString;
var isArgs = require('./isArguments'); // eslint-disable-line global-require
var isEnumerable = Object.prototype.propertyIsEnumerable;
var hasDontEnumBug = !isEnumerable.call({ toString: null }, 'toString');
var hasProtoEnumBug = isEnumerable.call(function () {}, 'prototype');
var dontEnums = [
'toString',
'toLocaleString',
'valueOf',
'hasOwnProperty',
'isPrototypeOf',
'propertyIsEnumerable',
'constructor'
];
var equalsConstructorPrototype = function (o) {
var ctor = o.constructor;
return ctor && ctor.prototype === o;
};
var excludedKeys = {
$applicationCache: true,
$console: true,
$external: true,
$frame: true,
$frameElement: true,
$frames: true,
$innerHeight: true,
$innerWidth: true,
$onmozfullscreenchange: true,
$onmozfullscreenerror: true,
$outerHeight: true,
$outerWidth: true,
$pageXOffset: true,
$pageYOffset: true,
$parent: true,
$scrollLeft: true,
$scrollTop: true,
$scrollX: true,
$scrollY: true,
$self: true,
$webkitIndexedDB: true,
$webkitStorageInfo: true,
$window: true
};
var hasAutomationEqualityBug = (function () {
/* global window */
if (typeof window === 'undefined') { return false; }
for (var k in window) {
try {
if (!excludedKeys['$' + k] && has.call(window, k) && window[k] !== null && typeof window[k] === 'object') {
try {
equalsConstructorPrototype(window[k]);
} catch (e) {
return true;
}
}
} catch (e) {
return true;
}
}
return false;
}());
var equalsConstructorPrototypeIfNotBuggy = function (o) {
/* global window */
if (typeof window === 'undefined' || !hasAutomationEqualityBug) {
return equalsConstructorPrototype(o);
}
try {
return equalsConstructorPrototype(o);
} catch (e) {
return false;
}
};
keysShim = function keys(object) {
var isObject = object !== null && typeof object === 'object';
var isFunction = toStr.call(object) === '[object Function]';
var isArguments = isArgs(object);
var isString = isObject && toStr.call(object) === '[object String]';
var theKeys = [];
if (!isObject && !isFunction && !isArguments) {
throw new TypeError('Object.keys called on a non-object');
}
var skipProto = hasProtoEnumBug && isFunction;
if (isString && object.length > 0 && !has.call(object, 0)) {
for (var i = 0; i < object.length; ++i) {
theKeys.push(String(i));
}
}
if (isArguments && object.length > 0) {
for (var j = 0; j < object.length; ++j) {
theKeys.push(String(j));
}
} else {
for (var name in object) {
if (!(skipProto && name === 'prototype') && has.call(object, name)) {
theKeys.push(String(name));
}
}
}
if (hasDontEnumBug) {
var skipConstructor = equalsConstructorPrototypeIfNotBuggy(object);
for (var k = 0; k < dontEnums.length; ++k) {
if (!(skipConstructor && dontEnums[k] === 'constructor') && has.call(object, dontEnums[k])) {
theKeys.push(dontEnums[k]);
}
}
}
return theKeys;
};
}
module.exports = keysShim;
},{"./isArguments":72}],71:[function(require,module,exports){
'use strict';
var slice = Array.prototype.slice;
var isArgs = require('./isArguments');
var origKeys = Object.keys;
var keysShim = origKeys ? function keys(o) { return origKeys(o); } : require('./implementation');
var originalKeys = Object.keys;
keysShim.shim = function shimObjectKeys() {
if (Object.keys) {
var keysWorksWithArguments = (function () {
// Safari 5.0 bug
var args = Object.keys(arguments);
return args && args.length === arguments.length;
}(1, 2));
if (!keysWorksWithArguments) {
Object.keys = function keys(object) { // eslint-disable-line func-name-matching
if (isArgs(object)) {
return originalKeys(slice.call(object));
}
return originalKeys(object);
};
}
} else {
Object.keys = keysShim;
}
return Object.keys || keysShim;
};
module.exports = keysShim;
},{"./implementation":70,"./isArguments":72}],72:[function(require,module,exports){
'use strict';
var toStr = Object.prototype.toString;
module.exports = function isArguments(value) {
var str = toStr.call(value);
var isArgs = str === '[object Arguments]';
if (!isArgs) {
isArgs = str !== '[object Array]' &&
value !== null &&
typeof value === 'object' &&
typeof value.length === 'number' &&
value.length >= 0 &&
toStr.call(value.callee) === '[object Function]';
}
return isArgs;
};
},{}],73:[function(require,module,exports){
'use strict';
// modified from https://github.com/es-shims/es6-shim
var keys = require('object-keys');
var canBeObject = function (obj) {
return typeof obj !== 'undefined' && obj !== null;
};
var hasSymbols = require('has-symbols/shams')();
var callBound = require('call-bind/callBound');
var toObject = Object;
var $push = callBound('Array.prototype.push');
var $propIsEnumerable = callBound('Object.prototype.propertyIsEnumerable');
var originalGetSymbols = hasSymbols ? Object.getOwnPropertySymbols : null;
// eslint-disable-next-line no-unused-vars
module.exports = function assign(target, source1) {
if (!canBeObject(target)) { throw new TypeError('target must be an object'); }
var objTarget = toObject(target);
var s, source, i, props, syms, value, key;
for (s = 1; s < arguments.length; ++s) {
source = toObject(arguments[s]);
props = keys(source);
var getSymbols = hasSymbols && (Object.getOwnPropertySymbols || originalGetSymbols);
if (getSymbols) {
syms = getSymbols(source);
for (i = 0; i < syms.length; ++i) {
key = syms[i];
if ($propIsEnumerable(source, key)) {
$push(props, key);
}
}
}
for (i = 0; i < props.length; ++i) {
key = props[i];
value = source[key];
if ($propIsEnumerable(source, key)) {
objTarget[key] = value;
}
}
}
return objTarget;
};
},{"call-bind/callBound":11,"has-symbols/shams":43,"object-keys":71}],74:[function(require,module,exports){
arguments[4][2][0].apply(exports,arguments)
},{"./implementation":73,"./polyfill":75,"./shim":76,"call-bind":12,"define-properties":16,"dup":2}],75:[function(require,module,exports){
'use strict';
var implementation = require('./implementation');
var lacksProperEnumerationOrder = function () {
if (!Object.assign) {
return false;
}
/*
* v8, specifically in node 4.x, has a bug with incorrect property enumeration order
* note: this does not detect the bug unless there's 20 characters
*/
var str = 'abcdefghijklmnopqrst';
var letters = str.split('');
var map = {};
for (var i = 0; i < letters.length; ++i) {
map[letters[i]] = letters[i];
}
var obj = Object.assign({}, map);
var actual = '';
for (var k in obj) {
actual += k;
}
return str !== actual;
};
var assignHasPendingExceptions = function () {
if (!Object.assign || !Object.preventExtensions) {
return false;
}
/*
* Firefox 37 still has "pending exception" logic in its Object.assign implementation,
* which is 72% slower than our shim, and Firefox 40's native implementation.
*/
var thrower = Object.preventExtensions({ 1: 2 });
try {
Object.assign(thrower, 'xy');
} catch (e) {
return thrower[1] === 'y';
}
return false;
};
module.exports = function getPolyfill() {
if (!Object.assign) {
return implementation;
}
if (lacksProperEnumerationOrder()) {
return implementation;
}
if (assignHasPendingExceptions()) {
return implementation;
}
return Object.assign;
};
},{"./implementation":73}],76:[function(require,module,exports){
'use strict';
var define = require('define-properties');
var getPolyfill = require('./polyfill');
module.exports = function shimAssign() {
var polyfill = getPolyfill();
define(
Object,
{ assign: polyfill },
{ assign: function () { return Object.assign !== polyfill; } }
);
return polyfill;
};
},{"./polyfill":75,"define-properties":16}],77:[function(require,module,exports){
(function (process){(function (){
// .dirname, .basename, and .extname methods are extracted from Node.js v8.11.1,
// backported and transplited with Babel, with backwards-compat fixes
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// resolves . and .. elements in a path array with directory names there
// must be no slashes, empty elements, or device names (c:\) in the array
// (so also no leading and trailing slashes - it does not distinguish
// relative and absolute paths)
function normalizeArray(parts, allowAboveRoot) {
// if the path tries to go above the root, `up` ends up > 0
var up = 0;
for (var i = parts.length - 1; i >= 0; i--) {
var last = parts[i];
if (last === '.') {
parts.splice(i, 1);
} else if (last === '..') {
parts.splice(i, 1);
up++;
} else if (up) {
parts.splice(i, 1);
up--;
}
}
// if the path is allowed to go above the root, restore leading ..s
if (allowAboveRoot) {
for (; up--; up) {
parts.unshift('..');
}
}
return parts;
}
// path.resolve([from ...], to)
// posix version
exports.resolve = function() {
var resolvedPath = '',
resolvedAbsolute = false;
for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
var path = (i >= 0) ? arguments[i] : process.cwd();
// Skip empty and invalid entries
if (typeof path !== 'string') {
throw new TypeError('Arguments to path.resolve must be strings');
} else if (!path) {
continue;
}
resolvedPath = path + '/' + resolvedPath;
resolvedAbsolute = path.charAt(0) === '/';
}
// At this point the path should be resolved to a full absolute path, but
// handle relative paths to be safe (might happen when process.cwd() fails)
// Normalize the path
resolvedPath = normalizeArray(filter(resolvedPath.split('/'), function(p) {
return !!p;
}), !resolvedAbsolute).join('/');
return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
};
// path.normalize(path)
// posix version
exports.normalize = function(path) {
var isAbsolute = exports.isAbsolute(path),
trailingSlash = substr(path, -1) === '/';
// Normalize the path
path = normalizeArray(filter(path.split('/'), function(p) {
return !!p;
}), !isAbsolute).join('/');
if (!path && !isAbsolute) {
path = '.';
}
if (path && trailingSlash) {
path += '/';
}
return (isAbsolute ? '/' : '') + path;
};
// posix version
exports.isAbsolute = function(path) {
return path.charAt(0) === '/';
};
// posix version
exports.join = function() {
var paths = Array.prototype.slice.call(arguments, 0);
return exports.normalize(filter(paths, function(p, index) {
if (typeof p !== 'string') {
throw new TypeError('Arguments to path.join must be strings');
}
return p;
}).join('/'));
};
// path.relative(from, to)
// posix version
exports.relative = function(from, to) {
from = exports.resolve(from).substr(1);
to = exports.resolve(to).substr(1);
function trim(arr) {
var start = 0;
for (; start < arr.length; start++) {
if (arr[start] !== '') break;
}
var end = arr.length - 1;
for (; end >= 0; end--) {
if (arr[end] !== '') break;
}
if (start > end) return [];
return arr.slice(start, end - start + 1);
}
var fromParts = trim(from.split('/'));
var toParts = trim(to.split('/'));
var length = Math.min(fromParts.length, toParts.length);
var samePartsLength = length;
for (var i = 0; i < length; i++) {
if (fromParts[i] !== toParts[i]) {
samePartsLength = i;
break;
}
}
var outputParts = [];
for (var i = samePartsLength; i < fromParts.length; i++) {
outputParts.push('..');
}
outputParts = outputParts.concat(toParts.slice(samePartsLength));
return outputParts.join('/');
};
exports.sep = '/';
exports.delimiter = ':';
exports.dirname = function (path) {
if (typeof path !== 'string') path = path + '';
if (path.length === 0) return '.';
var code = path.charCodeAt(0);
var hasRoot = code === 47 /*/*/;
var end = -1;
var matchedSlash = true;
for (var i = path.length - 1; i >= 1; --i) {
code = path.charCodeAt(i);
if (code === 47 /*/*/) {
if (!matchedSlash) {
end = i;
break;
}
} else {
// We saw the first non-path separator
matchedSlash = false;
}
}
if (end === -1) return hasRoot ? '/' : '.';
if (hasRoot && end === 1) {
// return '//';
// Backwards-compat fix:
return '/';
}
return path.slice(0, end);
};
function basename(path) {
if (typeof path !== 'string') path = path + '';
var start = 0;
var end = -1;
var matchedSlash = true;
var i;
for (i = path.length - 1; i >= 0; --i) {
if (path.charCodeAt(i) === 47 /*/*/) {
// If we reached a path separator that was not part of a set of path
// separators at the end of the string, stop now
if (!matchedSlash) {
start = i + 1;
break;
}
} else if (end === -1) {
// We saw the first non-path separator, mark this as the end of our
// path component
matchedSlash = false;
end = i + 1;
}
}
if (end === -1) return '';
return path.slice(start, end);
}
// Uses a mixed approach for backwards-compatibility, as ext behavior changed
// in new Node.js versions, so only basename() above is backported here
exports.basename = function (path, ext) {
var f = basename(path);
if (ext && f.substr(-1 * ext.length) === ext) {
f = f.substr(0, f.length - ext.length);
}
return f;
};
exports.extname = function (path) {
if (typeof path !== 'string') path = path + '';
var startDot = -1;
var startPart = 0;
var end = -1;
var matchedSlash = true;
// Track the state of characters (if any) we see before our first dot and
// after any path separator we find
var preDotState = 0;
for (var i = path.length - 1; i >= 0; --i) {
var code = path.charCodeAt(i);
if (code === 47 /*/*/) {
// If we reached a path separator that was not part of a set of path
// separators at the end of the string, stop now
if (!matchedSlash) {
startPart = i + 1;
break;
}
continue;
}
if (end === -1) {
// We saw the first non-path separator, mark this as the end of our
// extension
matchedSlash = false;
end = i + 1;
}
if (code === 46 /*.*/) {
// If this is our first dot, mark it as the start of our extension
if (startDot === -1)
startDot = i;
else if (preDotState !== 1)
preDotState = 1;
} else if (startDot !== -1) {
// We saw a non-dot and non-path separator before our dot, so we should
// have a good chance at having a non-empty extension
preDotState = -1;
}
}
if (startDot === -1 || end === -1 ||
// We saw a non-dot character immediately before the dot
preDotState === 0 ||
// The (right-most) trimmed path component is exactly '..'
preDotState === 1 && startDot === end - 1 && startDot === startPart + 1) {
return '';
}
return path.slice(startDot, end);
};
function filter (xs, f) {
if (xs.filter) return xs.filter(f);
var res = [];
for (var i = 0; i < xs.length; i++) {
if (f(xs[i], i, xs)) res.push(xs[i]);
}
return res;
}
// String.prototype.substr - negative index don't work in IE8
var substr = 'ab'.substr(-1) === 'b'
? function (str, start, len) { return str.substr(start, len) }
: function (str, start, len) {
if (start < 0) start = str.length + start;
return str.substr(start, len);
}
;
}).call(this)}).call(this,require('_process'))
},{"_process":79}],78:[function(require,module,exports){
(function (process){(function (){
'use strict';
if (typeof process === 'undefined' ||
!process.version ||
process.version.indexOf('v0.') === 0 ||
process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) {
module.exports = { nextTick: nextTick };
} else {
module.exports = process
}
function nextTick(fn, arg1, arg2, arg3) {
if (typeof fn !== 'function') {
throw new TypeError('"callback" argument must be a function');
}
var len = arguments.length;
var args, i;
switch (len) {
case 0:
case 1:
return process.nextTick(fn);
case 2:
return process.nextTick(function afterTickOne() {
fn.call(null, arg1);
});
case 3:
return process.nextTick(function afterTickTwo() {
fn.call(null, arg1, arg2);
});
case 4:
return process.nextTick(function afterTickThree() {
fn.call(null, arg1, arg2, arg3);
});
default:
args = new Array(len - 1);
i = 0;
while (i < args.length) {
args[i++] = arguments[i];
}
return process.nextTick(function afterTick() {
fn.apply(null, args);
});
}
}
}).call(this)}).call(this,require('_process'))
},{"_process":79}],79:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};
// cached from whatever global is present so that test runners that stub it
// don't break things. But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals. It's inside a
// function because try/catches deoptimize in certain engines.
var cachedSetTimeout;
var cachedClearTimeout;
function defaultSetTimout() {
throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout () {
throw new Error('clearTimeout has not been defined');
}
(function () {
try {
if (typeof setTimeout === 'function') {
cachedSetTimeout = setTimeout;
} else {
cachedSetTimeout = defaultSetTimout;
}
} catch (e) {
cachedSetTimeout = defaultSetTimout;
}
try {
if (typeof clearTimeout === 'function') {
cachedClearTimeout = clearTimeout;
} else {
cachedClearTimeout = defaultClearTimeout;
}
} catch (e) {
cachedClearTimeout = defaultClearTimeout;
}
} ())
function runTimeout(fun) {
if (cachedSetTimeout === setTimeout) {
//normal enviroments in sane situations
return setTimeout(fun, 0);
}
// if setTimeout wasn't available but was latter defined
if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
cachedSetTimeout = setTimeout;
return setTimeout(fun, 0);
}
try {
// when when somebody has screwed with setTimeout but no I.E. maddness
return cachedSetTimeout(fun, 0);
} catch(e){
try {
// When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
return cachedSetTimeout.call(null, fun, 0);
} catch(e){
// same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
return cachedSetTimeout.call(this, fun, 0);
}
}
}
function runClearTimeout(marker) {
if (cachedClearTimeout === clearTimeout) {
//normal enviroments in sane situations
return clearTimeout(marker);
}
// if clearTimeout wasn't available but was latter defined
if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
cachedClearTimeout = clearTimeout;
return clearTimeout(marker);
}
try {
// when when somebody has screwed with setTimeout but no I.E. maddness
return cachedClearTimeout(marker);
} catch (e){
try {
// When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
return cachedClearTimeout.call(null, marker);
} catch (e){
// same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
// Some versions of I.E. have different rules for clearTimeout vs setTimeout
return cachedClearTimeout.call(this, marker);
}
}
}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;
function cleanUpNextTick() {
if (!draining || !currentQueue) {
return;
}
draining = false;
if (currentQueue.length) {
queue = currentQueue.concat(queue);
} else {
queueIndex = -1;
}
if (queue.length) {
drainQueue();
}
}
function drainQueue() {
if (draining) {
return;
}
var timeout = runTimeout(cleanUpNextTick);
draining = true;
var len = queue.length;
while(len) {
currentQueue = queue;
queue = [];
while (++queueIndex < len) {
if (currentQueue) {
currentQueue[queueIndex].run();
}
}
queueIndex = -1;
len = queue.length;
}
currentQueue = null;
draining = false;
runClearTimeout(timeout);
}
process.nextTick = function (fun) {
var args = new Array(arguments.length - 1);
if (arguments.length > 1) {
for (var i = 1; i < arguments.length; i++) {
args[i - 1] = arguments[i];
}
}
queue.push(new Item(fun, args));
if (queue.length === 1 && !draining) {
runTimeout(drainQueue);
}
};
// v8 likes predictible objects
function Item(fun, array) {
this.fun = fun;
this.array = array;
}
Item.prototype.run = function () {
this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};
function noop() {}
process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.prependListener = noop;
process.prependOnceListener = noop;
process.listeners = function (name) { return [] }
process.binding = function (name) {
throw new Error('process.binding is not supported');
};
process.cwd = function () { return '/' };
process.chdir = function (dir) {
throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };
},{}],80:[function(require,module,exports){
module.exports = require('./lib/_stream_duplex.js');
},{"./lib/_stream_duplex.js":81}],81:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a duplex stream is just a stream that is both readable and writable.
// Since JS doesn't have multiple prototypal inheritance, this class
// prototypally inherits from Readable, and then parasitically from
// Writable.
'use strict';
/*<replacement>*/
var pna = require('process-nextick-args');
/*</replacement>*/
/*<replacement>*/
var objectKeys = Object.keys || function (obj) {
var keys = [];
for (var key in obj) {
keys.push(key);
}return keys;
};
/*</replacement>*/
module.exports = Duplex;
/*<replacement>*/
var util = Object.create(require('core-util-is'));
util.inherits = require('inherits');
/*</replacement>*/
var Readable = require('./_stream_readable');
var Writable = require('./_stream_writable');
util.inherits(Duplex, Readable);
{
// avoid scope creep, the keys array can then be collected
var keys = objectKeys(Writable.prototype);
for (var v = 0; v < keys.length; v++) {
var method = keys[v];
if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];
}
}
function Duplex(options) {
if (!(this instanceof Duplex)) return new Duplex(options);
Readable.call(this, options);
Writable.call(this, options);
if (options && options.readable === false) this.readable = false;
if (options && options.writable === false) this.writable = false;
this.allowHalfOpen = true;
if (options && options.allowHalfOpen === false) this.allowHalfOpen = false;
this.once('end', onend);
}
Object.defineProperty(Duplex.prototype, 'writableHighWaterMark', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function () {
return this._writableState.highWaterMark;
}
});
// the no-half-open enforcer
function onend() {
// if we allow half-open state, or if the writable side ended,
// then we're ok.
if (this.allowHalfOpen || this._writableState.ended) return;
// no more data can be written.
// But allow more writes to happen in this tick.
pna.nextTick(onEndNT, this);
}
function onEndNT(self) {
self.end();
}
Object.defineProperty(Duplex.prototype, 'destroyed', {
get: function () {
if (this._readableState === undefined || this._writableState === undefined) {
return false;
}
return this._readableState.destroyed && this._writableState.destroyed;
},
set: function (value) {
// we ignore the value if the stream
// has not been initialized yet
if (this._readableState === undefined || this._writableState === undefined) {
return;
}
// backward compatibility, the user is explicitly
// managing destroyed
this._readableState.destroyed = value;
this._writableState.destroyed = value;
}
});
Duplex.prototype._destroy = function (err, cb) {
this.push(null);
this.end();
pna.nextTick(cb, err);
};
},{"./_stream_readable":83,"./_stream_writable":85,"core-util-is":13,"inherits":47,"process-nextick-args":78}],82:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a passthrough stream.
// basically just the most minimal sort of Transform stream.
// Every written chunk gets output as-is.
'use strict';
module.exports = PassThrough;
var Transform = require('./_stream_transform');
/*<replacement>*/
var util = Object.create(require('core-util-is'));
util.inherits = require('inherits');
/*</replacement>*/
util.inherits(PassThrough, Transform);
function PassThrough(options) {
if (!(this instanceof PassThrough)) return new PassThrough(options);
Transform.call(this, options);
}
PassThrough.prototype._transform = function (chunk, encoding, cb) {
cb(null, chunk);
};
},{"./_stream_transform":84,"core-util-is":13,"inherits":47}],83:[function(require,module,exports){
(function (process,global){(function (){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
/*<replacement>*/
var pna = require('process-nextick-args');
/*</replacement>*/
module.exports = Readable;
/*<replacement>*/
var isArray = require('isarray');
/*</replacement>*/
/*<replacement>*/
var Duplex;
/*</replacement>*/
Readable.ReadableState = ReadableState;
/*<replacement>*/
var EE = require('events').EventEmitter;
var EElistenerCount = function (emitter, type) {
return emitter.listeners(type).length;
};
/*</replacement>*/
/*<replacement>*/
var Stream = require('./internal/streams/stream');
/*</replacement>*/
/*<replacement>*/
var Buffer = require('safe-buffer').Buffer;
var OurUint8Array = global.Uint8Array || function () {};
function _uint8ArrayToBuffer(chunk) {
return Buffer.from(chunk);
}
function _isUint8Array(obj) {
return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
}
/*</replacement>*/
/*<replacement>*/
var util = Object.create(require('core-util-is'));
util.inherits = require('inherits');
/*</replacement>*/
/*<replacement>*/
var debugUtil = require('util');
var debug = void 0;
if (debugUtil && debugUtil.debuglog) {
debug = debugUtil.debuglog('stream');
} else {
debug = function () {};
}
/*</replacement>*/
var BufferList = require('./internal/streams/BufferList');
var destroyImpl = require('./internal/streams/destroy');
var StringDecoder;
util.inherits(Readable, Stream);
var kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume'];
function prependListener(emitter, event, fn) {
// Sadly this is not cacheable as some libraries bundle their own
// event emitter implementation with them.
if (typeof emitter.prependListener === 'function') return emitter.prependListener(event, fn);
// This is a hack to make sure that our error handler is attached before any
// userland ones. NEVER DO THIS. This is here only because this code needs
// to continue to work with older versions of Node.js that do not include
// the prependListener() method. The goal is to eventually remove this hack.
if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]];
}
function ReadableState(options, stream) {
Duplex = Duplex || require('./_stream_duplex');
options = options || {};
// Duplex streams are both readable and writable, but share
// the same options object.
// However, some cases require setting options to different
// values for the readable and the writable sides of the duplex stream.
// These options can be provided separately as readableXXX and writableXXX.
var isDuplex = stream instanceof Duplex;
// object stream flag. Used to make read(n) ignore n and to
// make all the buffer merging and length checks go away
this.objectMode = !!options.objectMode;
if (isDuplex) this.objectMode = this.objectMode || !!options.readableObjectMode;
// the point at which it stops calling _read() to fill the buffer
// Note: 0 is a valid value, means "don't call _read preemptively ever"
var hwm = options.highWaterMark;
var readableHwm = options.readableHighWaterMark;
var defaultHwm = this.objectMode ? 16 : 16 * 1024;
if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (readableHwm || readableHwm === 0)) this.highWaterMark = readableHwm;else this.highWaterMark = defaultHwm;
// cast to ints.
this.highWaterMark = Math.floor(this.highWaterMark);
// A linked list is used to store data chunks instead of an array because the
// linked list can remove elements from the beginning faster than
// array.shift()
this.buffer = new BufferList();
this.length = 0;
this.pipes = null;
this.pipesCount = 0;
this.flowing = null;
this.ended = false;
this.endEmitted = false;
this.reading = false;
// a flag to be able to tell if the event 'readable'/'data' is emitted
// immediately, or on a later tick. We set this to true at first, because
// any actions that shouldn't happen until "later" should generally also
// not happen before the first read call.
this.sync = true;
// whenever we return null, then we set a flag to say
// that we're awaiting a 'readable' event emission.
this.needReadable = false;
this.emittedReadable = false;
this.readableListening = false;
this.resumeScheduled = false;
// has it been destroyed
this.destroyed = false;
// Crypto is kind of old and crusty. Historically, its default string
// encoding is 'binary' so we have to make this configurable.
// Everything else in the universe uses 'utf8', though.
this.defaultEncoding = options.defaultEncoding || 'utf8';
// the number of writers that are awaiting a drain event in .pipe()s
this.awaitDrain = 0;
// if true, a maybeReadMore has been scheduled
this.readingMore = false;
this.decoder = null;
this.encoding = null;
if (options.encoding) {
if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
this.decoder = new StringDecoder(options.encoding);
this.encoding = options.encoding;
}
}
function Readable(options) {
Duplex = Duplex || require('./_stream_duplex');
if (!(this instanceof Readable)) return new Readable(options);
this._readableState = new ReadableState(options, this);
// legacy
this.readable = true;
if (options) {
if (typeof options.read === 'function') this._read = options.read;
if (typeof options.destroy === 'function') this._destroy = options.destroy;
}
Stream.call(this);
}
Object.defineProperty(Readable.prototype, 'destroyed', {
get: function () {
if (this._readableState === undefined) {
return false;
}
return this._readableState.destroyed;
},
set: function (value) {
// we ignore the value if the stream
// has not been initialized yet
if (!this._readableState) {
return;
}
// backward compatibility, the user is explicitly
// managing destroyed
this._readableState.destroyed = value;
}
});
Readable.prototype.destroy = destroyImpl.destroy;
Readable.prototype._undestroy = destroyImpl.undestroy;
Readable.prototype._destroy = function (err, cb) {
this.push(null);
cb(err);
};
// Manually shove something into the read() buffer.
// This returns true if the highWaterMark has not been hit yet,
// similar to how Writable.write() returns true if you should
// write() some more.
Readable.prototype.push = function (chunk, encoding) {
var state = this._readableState;
var skipChunkCheck;
if (!state.objectMode) {
if (typeof chunk === 'string') {
encoding = encoding || state.defaultEncoding;
if (encoding !== state.encoding) {
chunk = Buffer.from(chunk, encoding);
encoding = '';
}
skipChunkCheck = true;
}
} else {
skipChunkCheck = true;
}
return readableAddChunk(this, chunk, encoding, false, skipChunkCheck);
};
// Unshift should *always* be something directly out of read()
Readable.prototype.unshift = function (chunk) {
return readableAddChunk(this, chunk, null, true, false);
};
function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) {
var state = stream._readableState;
if (chunk === null) {
state.reading = false;
onEofChunk(stream, state);
} else {
var er;
if (!skipChunkCheck) er = chunkInvalid(state, chunk);
if (er) {
stream.emit('error', er);
} else if (state.objectMode || chunk && chunk.length > 0) {
if (typeof chunk !== 'string' && !state.objectMode && Object.getPrototypeOf(chunk) !== Buffer.prototype) {
chunk = _uint8ArrayToBuffer(chunk);
}
if (addToFront) {
if (state.endEmitted) stream.emit('error', new Error('stream.unshift() after end event'));else addChunk(stream, state, chunk, true);
} else if (state.ended) {
stream.emit('error', new Error('stream.push() after EOF'));
} else {
state.reading = false;
if (state.decoder && !encoding) {
chunk = state.decoder.write(chunk);
if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false);else maybeReadMore(stream, state);
} else {
addChunk(stream, state, chunk, false);
}
}
} else if (!addToFront) {
state.reading = false;
}
}
return needMoreData(state);
}
function addChunk(stream, state, chunk, addToFront) {
if (state.flowing && state.length === 0 && !state.sync) {
stream.emit('data', chunk);
stream.read(0);
} else {
// update the buffer info.
state.length += state.objectMode ? 1 : chunk.length;
if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk);
if (state.needReadable) emitReadable(stream);
}
maybeReadMore(stream, state);
}
function chunkInvalid(state, chunk) {
var er;
if (!_isUint8Array(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
er = new TypeError('Invalid non-string/buffer chunk');
}
return er;
}
// if it's past the high water mark, we can push in some more.
// Also, if we have no data yet, we can stand some
// more bytes. This is to work around cases where hwm=0,
// such as the repl. Also, if the push() triggered a
// readable event, and the user called read(largeNumber) such that
// needReadable was set, then we ought to push more, so that another
// 'readable' event will be triggered.
function needMoreData(state) {
return !state.ended && (state.needReadable || state.length < state.highWaterMark || state.length === 0);
}
Readable.prototype.isPaused = function () {
return this._readableState.flowing === false;
};
// backwards compatibility.
Readable.prototype.setEncoding = function (enc) {
if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
this._readableState.decoder = new StringDecoder(enc);
this._readableState.encoding = enc;
return this;
};
// Don't raise the hwm > 8MB
var MAX_HWM = 0x800000;
function computeNewHighWaterMark(n) {
if (n >= MAX_HWM) {
n = MAX_HWM;
} else {
// Get the next highest power of 2 to prevent increasing hwm excessively in
// tiny amounts
n--;
n |= n >>> 1;
n |= n >>> 2;
n |= n >>> 4;
n |= n >>> 8;
n |= n >>> 16;
n++;
}
return n;
}
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function howMuchToRead(n, state) {
if (n <= 0 || state.length === 0 && state.ended) return 0;
if (state.objectMode) return 1;
if (n !== n) {
// Only flow one buffer at a time
if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length;
}
// If we're asking for more than the current hwm, then raise the hwm.
if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n);
if (n <= state.length) return n;
// Don't have enough
if (!state.ended) {
state.needReadable = true;
return 0;
}
return state.length;
}
// you can override either this method, or the async _read(n) below.
Readable.prototype.read = function (n) {
debug('read', n);
n = parseInt(n, 10);
var state = this._readableState;
var nOrig = n;
if (n !== 0) state.emittedReadable = false;
// if we're doing read(0) to trigger a readable event, but we
// already have a bunch of data in the buffer, then just trigger
// the 'readable' event and move on.
if (n === 0 && state.needReadable && (state.length >= state.highWaterMark || state.ended)) {
debug('read: emitReadable', state.length, state.ended);
if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this);
return null;
}
n = howMuchToRead(n, state);
// if we've ended, and we're now clear, then finish it up.
if (n === 0 && state.ended) {
if (state.length === 0) endReadable(this);
return null;
}
// All the actual chunk generation logic needs to be
// *below* the call to _read. The reason is that in certain
// synthetic stream cases, such as passthrough streams, _read
// may be a completely synchronous operation which may change
// the state of the read buffer, providing enough data when
// before there was *not* enough.
//
// So, the steps are:
// 1. Figure out what the state of things will be after we do
// a read from the buffer.
//
// 2. If that resulting state will trigger a _read, then call _read.
// Note that this may be asynchronous, or synchronous. Yes, it is
// deeply ugly to write APIs this way, but that still doesn't mean
// that the Readable class should behave improperly, as streams are
// designed to be sync/async agnostic.
// Take note if the _read call is sync or async (ie, if the read call
// has returned yet), so that we know whether or not it's safe to emit
// 'readable' etc.
//
// 3. Actually pull the requested chunks out of the buffer and return.
// if we need a readable event, then we need to do some reading.
var doRead = state.needReadable;
debug('need readable', doRead);
// if we currently have less than the highWaterMark, then also read some
if (state.length === 0 || state.length - n < state.highWaterMark) {
doRead = true;
debug('length less than watermark', doRead);
}
// however, if we've ended, then there's no point, and if we're already
// reading, then it's unnecessary.
if (state.ended || state.reading) {
doRead = false;
debug('reading or ended', doRead);
} else if (doRead) {
debug('do read');
state.reading = true;
state.sync = true;
// if the length is currently zero, then we *need* a readable event.
if (state.length === 0) state.needReadable = true;
// call internal read method
this._read(state.highWaterMark);
state.sync = false;
// If _read pushed data synchronously, then `reading` will be false,
// and we need to re-evaluate how much data we can return to the user.
if (!state.reading) n = howMuchToRead(nOrig, state);
}
var ret;
if (n > 0) ret = fromList(n, state);else ret = null;
if (ret === null) {
state.needReadable = true;
n = 0;
} else {
state.length -= n;
}
if (state.length === 0) {
// If we have nothing in the buffer, then we want to know
// as soon as we *do* get something into the buffer.
if (!state.ended) state.needReadable = true;
// If we tried to read() past the EOF, then emit end on the next tick.
if (nOrig !== n && state.ended) endReadable(this);
}
if (ret !== null) this.emit('data', ret);
return ret;
};
function onEofChunk(stream, state) {
if (state.ended) return;
if (state.decoder) {
var chunk = state.decoder.end();
if (chunk && chunk.length) {
state.buffer.push(chunk);
state.length += state.objectMode ? 1 : chunk.length;
}
}
state.ended = true;
// emit 'readable' now to make sure it gets picked up.
emitReadable(stream);
}
// Don't emit readable right away in sync mode, because this can trigger
// another read() call => stack overflow. This way, it might trigger
// a nextTick recursion warning, but that's not so bad.
function emitReadable(stream) {
var state = stream._readableState;
state.needReadable = false;
if (!state.emittedReadable) {
debug('emitReadable', state.flowing);
state.emittedReadable = true;
if (state.sync) pna.nextTick(emitReadable_, stream);else emitReadable_(stream);
}
}
function emitReadable_(stream) {
debug('emit readable');
stream.emit('readable');
flow(stream);
}
// at this point, the user has presumably seen the 'readable' event,
// and called read() to consume some data. that may have triggered
// in turn another _read(n) call, in which case reading = true if
// it's in progress.
// However, if we're not ended, or reading, and the length < hwm,
// then go ahead and try to read some more preemptively.
function maybeReadMore(stream, state) {
if (!state.readingMore) {
state.readingMore = true;
pna.nextTick(maybeReadMore_, stream, state);
}
}
function maybeReadMore_(stream, state) {
var len = state.length;
while (!state.reading && !state.flowing && !state.ended && state.length < state.highWaterMark) {
debug('maybeReadMore read 0');
stream.read(0);
if (len === state.length)
// didn't get any data, stop spinning.
break;else len = state.length;
}
state.readingMore = false;
}
// abstract method. to be overridden in specific implementation classes.
// call cb(er, data) where data is <= n in length.
// for virtual (non-string, non-buffer) streams, "length" is somewhat
// arbitrary, and perhaps not very meaningful.
Readable.prototype._read = function (n) {
this.emit('error', new Error('_read() is not implemented'));
};
Readable.prototype.pipe = function (dest, pipeOpts) {
var src = this;
var state = this._readableState;
switch (state.pipesCount) {
case 0:
state.pipes = dest;
break;
case 1:
state.pipes = [state.pipes, dest];
break;
default:
state.pipes.push(dest);
break;
}
state.pipesCount += 1;
debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts);
var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr;
var endFn = doEnd ? onend : unpipe;
if (state.endEmitted) pna.nextTick(endFn);else src.once('end', endFn);
dest.on('unpipe', onunpipe);
function onunpipe(readable, unpipeInfo) {
debug('onunpipe');
if (readable === src) {
if (unpipeInfo && unpipeInfo.hasUnpiped === false) {
unpipeInfo.hasUnpiped = true;
cleanup();
}
}
}
function onend() {
debug('onend');
dest.end();
}
// when the dest drains, it reduces the awaitDrain counter
// on the source. This would be more elegant with a .once()
// handler in flow(), but adding and removing repeatedly is
// too slow.
var ondrain = pipeOnDrain(src);
dest.on('drain', ondrain);
var cleanedUp = false;
function cleanup() {
debug('cleanup');
// cleanup event handlers once the pipe is broken
dest.removeListener('close', onclose);
dest.removeListener('finish', onfinish);
dest.removeListener('drain', ondrain);
dest.removeListener('error', onerror);
dest.removeListener('unpipe', onunpipe);
src.removeListener('end', onend);
src.removeListener('end', unpipe);
src.removeListener('data', ondata);
cleanedUp = true;
// if the reader is waiting for a drain event from this
// specific writer, then it would cause it to never start
// flowing again.
// So, if this is awaiting a drain, then we just call it now.
// If we don't know, then assume that we are waiting for one.
if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain();
}
// If the user pushes more data while we're writing to dest then we'll end up
// in ondata again. However, we only want to increase awaitDrain once because
// dest will only emit one 'drain' event for the multiple writes.
// => Introduce a guard on increasing awaitDrain.
var increasedAwaitDrain = false;
src.on('data', ondata);
function ondata(chunk) {
debug('ondata');
increasedAwaitDrain = false;
var ret = dest.write(chunk);
if (false === ret && !increasedAwaitDrain) {
// If the user unpiped during `dest.write()`, it is possible
// to get stuck in a permanently paused state if that write
// also returned false.
// => Check whether `dest` is still a piping destination.
if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) {
debug('false write response, pause', src._readableState.awaitDrain);
src._readableState.awaitDrain++;
increasedAwaitDrain = true;
}
src.pause();
}
}
// if the dest has an error, then stop piping into it.
// however, don't suppress the throwing behavior for this.
function onerror(er) {
debug('onerror', er);
unpipe();
dest.removeListener('error', onerror);
if (EElistenerCount(dest, 'error') === 0) dest.emit('error', er);
}
// Make sure our error handler is attached before userland ones.
prependListener(dest, 'error', onerror);
// Both close and finish should trigger unpipe, but only once.
function onclose() {
dest.removeListener('finish', onfinish);
unpipe();
}
dest.once('close', onclose);
function onfinish() {
debug('onfinish');
dest.removeListener('close', onclose);
unpipe();
}
dest.once('finish', onfinish);
function unpipe() {
debug('unpipe');
src.unpipe(dest);
}
// tell the dest that it's being piped to
dest.emit('pipe', src);
// start the flow if it hasn't been started already.
if (!state.flowing) {
debug('pipe resume');
src.resume();
}
return dest;
};
function pipeOnDrain(src) {
return function () {
var state = src._readableState;
debug('pipeOnDrain', state.awaitDrain);
if (state.awaitDrain) state.awaitDrain--;
if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) {
state.flowing = true;
flow(src);
}
};
}
Readable.prototype.unpipe = function (dest) {
var state = this._readableState;
var unpipeInfo = { hasUnpiped: false };
// if we're not piping anywhere, then do nothing.
if (state.pipesCount === 0) return this;
// just one destination. most common case.
if (state.pipesCount === 1) {
// passed in one, but it's not the right one.
if (dest && dest !== state.pipes) return this;
if (!dest) dest = state.pipes;
// got a match.
state.pipes = null;
state.pipesCount = 0;
state.flowing = false;
if (dest) dest.emit('unpipe', this, unpipeInfo);
return this;
}
// slow case. multiple pipe destinations.
if (!dest) {
// remove all.
var dests = state.pipes;
var len = state.pipesCount;
state.pipes = null;
state.pipesCount = 0;
state.flowing = false;
for (var i = 0; i < len; i++) {
dests[i].emit('unpipe', this, unpipeInfo);
}return this;
}
// try to find the right one.
var index = indexOf(state.pipes, dest);
if (index === -1) return this;
state.pipes.splice(index, 1);
state.pipesCount -= 1;
if (state.pipesCount === 1) state.pipes = state.pipes[0];
dest.emit('unpipe', this, unpipeInfo);
return this;
};
// set up data events if they are asked for
// Ensure readable listeners eventually get something
Readable.prototype.on = function (ev, fn) {
var res = Stream.prototype.on.call(this, ev, fn);
if (ev === 'data') {
// Start flowing on next tick if stream isn't explicitly paused
if (this._readableState.flowing !== false) this.resume();
} else if (ev === 'readable') {
var state = this._readableState;
if (!state.endEmitted && !state.readableListening) {
state.readableListening = state.needReadable = true;
state.emittedReadable = false;
if (!state.reading) {
pna.nextTick(nReadingNextTick, this);
} else if (state.length) {
emitReadable(this);
}
}
}
return res;
};
Readable.prototype.addListener = Readable.prototype.on;
function nReadingNextTick(self) {
debug('readable nexttick read 0');
self.read(0);
}
// pause() and resume() are remnants of the legacy readable stream API
// If the user uses them, then switch into old mode.
Readable.prototype.resume = function () {
var state = this._readableState;
if (!state.flowing) {
debug('resume');
state.flowing = true;
resume(this, state);
}
return this;
};
function resume(stream, state) {
if (!state.resumeScheduled) {
state.resumeScheduled = true;
pna.nextTick(resume_, stream, state);
}
}
function resume_(stream, state) {
if (!state.reading) {
debug('resume read 0');
stream.read(0);
}
state.resumeScheduled = false;
state.awaitDrain = 0;
stream.emit('resume');
flow(stream);
if (state.flowing && !state.reading) stream.read(0);
}
Readable.prototype.pause = function () {
debug('call pause flowing=%j', this._readableState.flowing);
if (false !== this._readableState.flowing) {
debug('pause');
this._readableState.flowing = false;
this.emit('pause');
}
return this;
};
function flow(stream) {
var state = stream._readableState;
debug('flow', state.flowing);
while (state.flowing && stream.read() !== null) {}
}
// wrap an old-style stream as the async data source.
// This is *not* part of the readable stream interface.
// It is an ugly unfortunate mess of history.
Readable.prototype.wrap = function (stream) {
var _this = this;
var state = this._readableState;
var paused = false;
stream.on('end', function () {
debug('wrapped end');
if (state.decoder && !state.ended) {
var chunk = state.decoder.end();
if (chunk && chunk.length) _this.push(chunk);
}
_this.push(null);
});
stream.on('data', function (chunk) {
debug('wrapped data');
if (state.decoder) chunk = state.decoder.write(chunk);
// don't skip over falsy values in objectMode
if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return;
var ret = _this.push(chunk);
if (!ret) {
paused = true;
stream.pause();
}
});
// proxy all the other methods.
// important when wrapping filters and duplexes.
for (var i in stream) {
if (this[i] === undefined && typeof stream[i] === 'function') {
this[i] = function (method) {
return function () {
return stream[method].apply(stream, arguments);
};
}(i);
}
}
// proxy certain important events.
for (var n = 0; n < kProxyEvents.length; n++) {
stream.on(kProxyEvents[n], this.emit.bind(this, kProxyEvents[n]));
}
// when we try to consume some more bytes, simply unpause the
// underlying stream.
this._read = function (n) {
debug('wrapped _read', n);
if (paused) {
paused = false;
stream.resume();
}
};
return this;
};
Object.defineProperty(Readable.prototype, 'readableHighWaterMark', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function () {
return this._readableState.highWaterMark;
}
});
// exposed for testing purposes only.
Readable._fromList = fromList;
// Pluck off n bytes from an array of buffers.
// Length is the combined lengths of all the buffers in the list.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function fromList(n, state) {
// nothing buffered
if (state.length === 0) return null;
var ret;
if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) {
// read it all, truncate the list
if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.head.data;else ret = state.buffer.concat(state.length);
state.buffer.clear();
} else {
// read part of list
ret = fromListPartial(n, state.buffer, state.decoder);
}
return ret;
}
// Extracts only enough buffered data to satisfy the amount requested.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function fromListPartial(n, list, hasStrings) {
var ret;
if (n < list.head.data.length) {
// slice is the same for buffers and strings
ret = list.head.data.slice(0, n);
list.head.data = list.head.data.slice(n);
} else if (n === list.head.data.length) {
// first chunk is a perfect match
ret = list.shift();
} else {
// result spans more than one buffer
ret = hasStrings ? copyFromBufferString(n, list) : copyFromBuffer(n, list);
}
return ret;
}
// Copies a specified amount of characters from the list of buffered data
// chunks.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function copyFromBufferString(n, list) {
var p = list.head;
var c = 1;
var ret = p.data;
n -= ret.length;
while (p = p.next) {
var str = p.data;
var nb = n > str.length ? str.length : n;
if (nb === str.length) ret += str;else ret += str.slice(0, n);
n -= nb;
if (n === 0) {
if (nb === str.length) {
++c;
if (p.next) list.head = p.next;else list.head = list.tail = null;
} else {
list.head = p;
p.data = str.slice(nb);
}
break;
}
++c;
}
list.length -= c;
return ret;
}
// Copies a specified amount of bytes from the list of buffered data chunks.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function copyFromBuffer(n, list) {
var ret = Buffer.allocUnsafe(n);
var p = list.head;
var c = 1;
p.data.copy(ret);
n -= p.data.length;
while (p = p.next) {
var buf = p.data;
var nb = n > buf.length ? buf.length : n;
buf.copy(ret, ret.length - n, 0, nb);
n -= nb;
if (n === 0) {
if (nb === buf.length) {
++c;
if (p.next) list.head = p.next;else list.head = list.tail = null;
} else {
list.head = p;
p.data = buf.slice(nb);
}
break;
}
++c;
}
list.length -= c;
return ret;
}
function endReadable(stream) {
var state = stream._readableState;
// If we get here before consuming all the bytes, then that is a
// bug in node. Should never happen.
if (state.length > 0) throw new Error('"endReadable()" called on non-empty stream');
if (!state.endEmitted) {
state.ended = true;
pna.nextTick(endReadableNT, state, stream);
}
}
function endReadableNT(state, stream) {
// Check that we didn't get one last unshift.
if (!state.endEmitted && state.length === 0) {
state.endEmitted = true;
stream.readable = false;
stream.emit('end');
}
}
function indexOf(xs, x) {
for (var i = 0, l = xs.length; i < l; i++) {
if (xs[i] === x) return i;
}
return -1;
}
}).call(this)}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./_stream_duplex":81,"./internal/streams/BufferList":86,"./internal/streams/destroy":87,"./internal/streams/stream":88,"_process":79,"core-util-is":13,"events":33,"inherits":47,"isarray":62,"process-nextick-args":78,"safe-buffer":89,"string_decoder/":90,"util":9}],84:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a transform stream is a readable/writable stream where you do
// something with the data. Sometimes it's called a "filter",
// but that's not a great name for it, since that implies a thing where
// some bits pass through, and others are simply ignored. (That would
// be a valid example of a transform, of course.)
//
// While the output is causally related to the input, it's not a
// necessarily symmetric or synchronous transformation. For example,
// a zlib stream might take multiple plain-text writes(), and then
// emit a single compressed chunk some time in the future.
//
// Here's how this works:
//
// The Transform stream has all the aspects of the readable and writable
// stream classes. When you write(chunk), that calls _write(chunk,cb)
// internally, and returns false if there's a lot of pending writes
// buffered up. When you call read(), that calls _read(n) until
// there's enough pending readable data buffered up.
//
// In a transform stream, the written data is placed in a buffer. When
// _read(n) is called, it transforms the queued up data, calling the
// buffered _write cb's as it consumes chunks. If consuming a single
// written chunk would result in multiple output chunks, then the first
// outputted bit calls the readcb, and subsequent chunks just go into
// the read buffer, and will cause it to emit 'readable' if necessary.
//
// This way, back-pressure is actually determined by the reading side,
// since _read has to be called to start processing a new chunk. However,
// a pathological inflate type of transform can cause excessive buffering
// here. For example, imagine a stream where every byte of input is
// interpreted as an integer from 0-255, and then results in that many
// bytes of output. Writing the 4 bytes {ff,ff,ff,ff} would result in
// 1kb of data being output. In this case, you could write a very small
// amount of input, and end up with a very large amount of output. In
// such a pathological inflating mechanism, there'd be no way to tell
// the system to stop doing the transform. A single 4MB write could
// cause the system to run out of memory.
//
// However, even in such a pathological case, only a single written chunk
// would be consumed, and then the rest would wait (un-transformed) until
// the results of the previous transformed chunk were consumed.
'use strict';
module.exports = Transform;
var Duplex = require('./_stream_duplex');
/*<replacement>*/
var util = Object.create(require('core-util-is'));
util.inherits = require('inherits');
/*</replacement>*/
util.inherits(Transform, Duplex);
function afterTransform(er, data) {
var ts = this._transformState;
ts.transforming = false;
var cb = ts.writecb;
if (!cb) {
return this.emit('error', new Error('write callback called multiple times'));
}
ts.writechunk = null;
ts.writecb = null;
if (data != null) // single equals check for both `null` and `undefined`
this.push(data);
cb(er);
var rs = this._readableState;
rs.reading = false;
if (rs.needReadable || rs.length < rs.highWaterMark) {
this._read(rs.highWaterMark);
}
}
function Transform(options) {
if (!(this instanceof Transform)) return new Transform(options);
Duplex.call(this, options);
this._transformState = {
afterTransform: afterTransform.bind(this),
needTransform: false,
transforming: false,
writecb: null,
writechunk: null,
writeencoding: null
};
// start out asking for a readable event once data is transformed.
this._readableState.needReadable = true;
// we have implemented the _read method, and done the other things
// that Readable wants before the first _read call, so unset the
// sync guard flag.
this._readableState.sync = false;
if (options) {
if (typeof options.transform === 'function') this._transform = options.transform;
if (typeof options.flush === 'function') this._flush = options.flush;
}
// When the writable side finishes, then flush out anything remaining.
this.on('prefinish', prefinish);
}
function prefinish() {
var _this = this;
if (typeof this._flush === 'function') {
this._flush(function (er, data) {
done(_this, er, data);
});
} else {
done(this, null, null);
}
}
Transform.prototype.push = function (chunk, encoding) {
this._transformState.needTransform = false;
return Duplex.prototype.push.call(this, chunk, encoding);
};
// This is the part where you do stuff!
// override this function in implementation classes.
// 'chunk' is an input chunk.
//
// Call `push(newChunk)` to pass along transformed output
// to the readable side. You may call 'push' zero or more times.
//
// Call `cb(err)` when you are done with this chunk. If you pass
// an error, then that'll put the hurt on the whole operation. If you
// never call cb(), then you'll never get another chunk.
Transform.prototype._transform = function (chunk, encoding, cb) {
throw new Error('_transform() is not implemented');
};
Transform.prototype._write = function (chunk, encoding, cb) {
var ts = this._transformState;
ts.writecb = cb;
ts.writechunk = chunk;
ts.writeencoding = encoding;
if (!ts.transforming) {
var rs = this._readableState;
if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);
}
};
// Doesn't matter what the args are here.
// _transform does all the work.
// That we got here means that the readable side wants more data.
Transform.prototype._read = function (n) {
var ts = this._transformState;
if (ts.writechunk !== null && ts.writecb && !ts.transforming) {
ts.transforming = true;
this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
} else {
// mark that we need a transform, so that any data that comes in
// will get processed, now that we've asked for it.
ts.needTransform = true;
}
};
Transform.prototype._destroy = function (err, cb) {
var _this2 = this;
Duplex.prototype._destroy.call(this, err, function (err2) {
cb(err2);
_this2.emit('close');
});
};
function done(stream, er, data) {
if (er) return stream.emit('error', er);
if (data != null) // single equals check for both `null` and `undefined`
stream.push(data);
// if there's nothing in the write buffer, then that means
// that nothing more will ever be provided
if (stream._writableState.length) throw new Error('Calling transform done when ws.length != 0');
if (stream._transformState.transforming) throw new Error('Calling transform done when still transforming');
return stream.push(null);
}
},{"./_stream_duplex":81,"core-util-is":13,"inherits":47}],85:[function(require,module,exports){
(function (process,global,setImmediate){(function (){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// A bit simpler than readable streams.
// Implement an async ._write(chunk, encoding, cb), and it'll handle all
// the drain event emission and buffering.
'use strict';
/*<replacement>*/
var pna = require('process-nextick-args');
/*</replacement>*/
module.exports = Writable;
/* <replacement> */
function WriteReq(chunk, encoding, cb) {
this.chunk = chunk;
this.encoding = encoding;
this.callback = cb;
this.next = null;
}
// It seems a linked list but it is not
// there will be only 2 of these for each stream
function CorkedRequest(state) {
var _this = this;
this.next = null;
this.entry = null;
this.finish = function () {
onCorkedFinish(_this, state);
};
}
/* </replacement> */
/*<replacement>*/
var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : pna.nextTick;
/*</replacement>*/
/*<replacement>*/
var Duplex;
/*</replacement>*/
Writable.WritableState = WritableState;
/*<replacement>*/
var util = Object.create(require('core-util-is'));
util.inherits = require('inherits');
/*</replacement>*/
/*<replacement>*/
var internalUtil = {
deprecate: require('util-deprecate')
};
/*</replacement>*/
/*<replacement>*/
var Stream = require('./internal/streams/stream');
/*</replacement>*/
/*<replacement>*/
var Buffer = require('safe-buffer').Buffer;
var OurUint8Array = global.Uint8Array || function () {};
function _uint8ArrayToBuffer(chunk) {
return Buffer.from(chunk);
}
function _isUint8Array(obj) {
return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
}
/*</replacement>*/
var destroyImpl = require('./internal/streams/destroy');
util.inherits(Writable, Stream);
function nop() {}
function WritableState(options, stream) {
Duplex = Duplex || require('./_stream_duplex');
options = options || {};
// Duplex streams are both readable and writable, but share
// the same options object.
// However, some cases require setting options to different
// values for the readable and the writable sides of the duplex stream.
// These options can be provided separately as readableXXX and writableXXX.
var isDuplex = stream instanceof Duplex;
// object stream flag to indicate whether or not this stream
// contains buffers or objects.
this.objectMode = !!options.objectMode;
if (isDuplex) this.objectMode = this.objectMode || !!options.writableObjectMode;
// the point at which write() starts returning false
// Note: 0 is a valid value, means that we always return false if
// the entire buffer is not flushed immediately on write()
var hwm = options.highWaterMark;
var writableHwm = options.writableHighWaterMark;
var defaultHwm = this.objectMode ? 16 : 16 * 1024;
if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (writableHwm || writableHwm === 0)) this.highWaterMark = writableHwm;else this.highWaterMark = defaultHwm;
// cast to ints.
this.highWaterMark = Math.floor(this.highWaterMark);
// if _final has been called
this.finalCalled = false;
// drain event flag.
this.needDrain = false;
// at the start of calling end()
this.ending = false;
// when end() has been called, and returned
this.ended = false;
// when 'finish' is emitted
this.finished = false;
// has it been destroyed
this.destroyed = false;
// should we decode strings into buffers before passing to _write?
// this is here so that some node-core streams can optimize string
// handling at a lower level.
var noDecode = options.decodeStrings === false;
this.decodeStrings = !noDecode;
// Crypto is kind of old and crusty. Historically, its default string
// encoding is 'binary' so we have to make this configurable.
// Everything else in the universe uses 'utf8', though.
this.defaultEncoding = options.defaultEncoding || 'utf8';
// not an actual buffer we keep track of, but a measurement
// of how much we're waiting to get pushed to some underlying
// socket or file.
this.length = 0;
// a flag to see when we're in the middle of a write.
this.writing = false;
// when true all writes will be buffered until .uncork() call
this.corked = 0;
// a flag to be able to tell if the onwrite cb is called immediately,
// or on a later tick. We set this to true at first, because any
// actions that shouldn't happen until "later" should generally also
// not happen before the first write call.
this.sync = true;
// a flag to know if we're processing previously buffered items, which
// may call the _write() callback in the same tick, so that we don't
// end up in an overlapped onwrite situation.
this.bufferProcessing = false;
// the callback that's passed to _write(chunk,cb)
this.onwrite = function (er) {
onwrite(stream, er);
};
// the callback that the user supplies to write(chunk,encoding,cb)
this.writecb = null;
// the amount that is being written when _write is called.
this.writelen = 0;
this.bufferedRequest = null;
this.lastBufferedRequest = null;
// number of pending user-supplied write callbacks
// this must be 0 before 'finish' can be emitted
this.pendingcb = 0;
// emit prefinish if the only thing we're waiting for is _write cbs
// This is relevant for synchronous Transform streams
this.prefinished = false;
// True if the error was already emitted and should not be thrown again
this.errorEmitted = false;
// count buffered requests
this.bufferedRequestCount = 0;
// allocate the first CorkedRequest, there is always
// one allocated and free to use, and we maintain at most two
this.corkedRequestsFree = new CorkedRequest(this);
}
WritableState.prototype.getBuffer = function getBuffer() {
var current = this.bufferedRequest;
var out = [];
while (current) {
out.push(current);
current = current.next;
}
return out;
};
(function () {
try {
Object.defineProperty(WritableState.prototype, 'buffer', {
get: internalUtil.deprecate(function () {
return this.getBuffer();
}, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003')
});
} catch (_) {}
})();
// Test _writableState for inheritance to account for Duplex streams,
// whose prototype chain only points to Readable.
var realHasInstance;
if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') {
realHasInstance = Function.prototype[Symbol.hasInstance];
Object.defineProperty(Writable, Symbol.hasInstance, {
value: function (object) {
if (realHasInstance.call(this, object)) return true;
if (this !== Writable) return false;
return object && object._writableState instanceof WritableState;
}
});
} else {
realHasInstance = function (object) {
return object instanceof this;
};
}
function Writable(options) {
Duplex = Duplex || require('./_stream_duplex');
// Writable ctor is applied to Duplexes, too.
// `realHasInstance` is necessary because using plain `instanceof`
// would return false, as no `_writableState` property is attached.
// Trying to use the custom `instanceof` for Writable here will also break the
// Node.js LazyTransform implementation, which has a non-trivial getter for
// `_writableState` that would lead to infinite recursion.
if (!realHasInstance.call(Writable, this) && !(this instanceof Duplex)) {
return new Writable(options);
}
this._writableState = new WritableState(options, this);
// legacy.
this.writable = true;
if (options) {
if (typeof options.write === 'function') this._write = options.write;
if (typeof options.writev === 'function') this._writev = options.writev;
if (typeof options.destroy === 'function') this._destroy = options.destroy;
if (typeof options.final === 'function') this._final = options.final;
}
Stream.call(this);
}
// Otherwise people can pipe Writable streams, which is just wrong.
Writable.prototype.pipe = function () {
this.emit('error', new Error('Cannot pipe, not readable'));
};
function writeAfterEnd(stream, cb) {
var er = new Error('write after end');
// TODO: defer error events consistently everywhere, not just the cb
stream.emit('error', er);
pna.nextTick(cb, er);
}
// Checks that a user-supplied chunk is valid, especially for the particular
// mode the stream is in. Currently this means that `null` is never accepted
// and undefined/non-string values are only allowed in object mode.
function validChunk(stream, state, chunk, cb) {
var valid = true;
var er = false;
if (chunk === null) {
er = new TypeError('May not write null values to stream');
} else if (typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
er = new TypeError('Invalid non-string/buffer chunk');
}
if (er) {
stream.emit('error', er);
pna.nextTick(cb, er);
valid = false;
}
return valid;
}
Writable.prototype.write = function (chunk, encoding, cb) {
var state = this._writableState;
var ret = false;
var isBuf = !state.objectMode && _isUint8Array(chunk);
if (isBuf && !Buffer.isBuffer(chunk)) {
chunk = _uint8ArrayToBuffer(chunk);
}
if (typeof encoding === 'function') {
cb = encoding;
encoding = null;
}
if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;
if (typeof cb !== 'function') cb = nop;
if (state.ended) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) {
state.pendingcb++;
ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb);
}
return ret;
};
Writable.prototype.cork = function () {
var state = this._writableState;
state.corked++;
};
Writable.prototype.uncork = function () {
var state = this._writableState;
if (state.corked) {
state.corked--;
if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);
}
};
Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {
// node::ParseEncoding() requires lower case.
if (typeof encoding === 'string') encoding = encoding.toLowerCase();
if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new TypeError('Unknown encoding: ' + encoding);
this._writableState.defaultEncoding = encoding;
return this;
};
function decodeChunk(state, chunk, encoding) {
if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {
chunk = Buffer.from(chunk, encoding);
}
return chunk;
}
Object.defineProperty(Writable.prototype, 'writableHighWaterMark', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function () {
return this._writableState.highWaterMark;
}
});
// if we're already writing something, then just put this
// in the queue, and wait our turn. Otherwise, call _write
// If we return false, then we need a drain event, so set that flag.
function writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) {
if (!isBuf) {
var newChunk = decodeChunk(state, chunk, encoding);
if (chunk !== newChunk) {
isBuf = true;
encoding = 'buffer';
chunk = newChunk;
}
}
var len = state.objectMode ? 1 : chunk.length;
state.length += len;
var ret = state.length < state.highWaterMark;
// we must ensure that previous needDrain will not be reset to false.
if (!ret) state.needDrain = true;
if (state.writing || state.corked) {
var last = state.lastBufferedRequest;
state.lastBufferedRequest = {
chunk: chunk,
encoding: encoding,
isBuf: isBuf,
callback: cb,
next: null
};
if (last) {
last.next = state.lastBufferedRequest;
} else {
state.bufferedRequest = state.lastBufferedRequest;
}
state.bufferedRequestCount += 1;
} else {
doWrite(stream, state, false, len, chunk, encoding, cb);
}
return ret;
}
function doWrite(stream, state, writev, len, chunk, encoding, cb) {
state.writelen = len;
state.writecb = cb;
state.writing = true;
state.sync = true;
if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite);
state.sync = false;
}
function onwriteError(stream, state, sync, er, cb) {
--state.pendingcb;
if (sync) {
// defer the callback if we are being called synchronously
// to avoid piling up things on the stack
pna.nextTick(cb, er);
// this can emit finish, and it will always happen
// after error
pna.nextTick(finishMaybe, stream, state);
stream._writableState.errorEmitted = true;
stream.emit('error', er);
} else {
// the caller expect this to happen before if
// it is async
cb(er);
stream._writableState.errorEmitted = true;
stream.emit('error', er);
// this can emit finish, but finish must
// always follow error
finishMaybe(stream, state);
}
}
function onwriteStateUpdate(state) {
state.writing = false;
state.writecb = null;
state.length -= state.writelen;
state.writelen = 0;
}
function onwrite(stream, er) {
var state = stream._writableState;
var sync = state.sync;
var cb = state.writecb;
onwriteStateUpdate(state);
if (er) onwriteError(stream, state, sync, er, cb);else {
// Check if we're actually ready to finish, but don't emit yet
var finished = needFinish(state);
if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {
clearBuffer(stream, state);
}
if (sync) {
/*<replacement>*/
asyncWrite(afterWrite, stream, state, finished, cb);
/*</replacement>*/
} else {
afterWrite(stream, state, finished, cb);
}
}
}
function afterWrite(stream, state, finished, cb) {
if (!finished) onwriteDrain(stream, state);
state.pendingcb--;
cb();
finishMaybe(stream, state);
}
// Must force callback to be called on nextTick, so that we don't
// emit 'drain' before the write() consumer gets the 'false' return
// value, and has a chance to attach a 'drain' listener.
function onwriteDrain(stream, state) {
if (state.length === 0 && state.needDrain) {
state.needDrain = false;
stream.emit('drain');
}
}
// if there's something in the buffer waiting, then process it
function clearBuffer(stream, state) {
state.bufferProcessing = true;
var entry = state.bufferedRequest;
if (stream._writev && entry && entry.next) {
// Fast case, write everything using _writev()
var l = state.bufferedRequestCount;
var buffer = new Array(l);
var holder = state.corkedRequestsFree;
holder.entry = entry;
var count = 0;
var allBuffers = true;
while (entry) {
buffer[count] = entry;
if (!entry.isBuf) allBuffers = false;
entry = entry.next;
count += 1;
}
buffer.allBuffers = allBuffers;
doWrite(stream, state, true, state.length, buffer, '', holder.finish);
// doWrite is almost always async, defer these to save a bit of time
// as the hot path ends with doWrite
state.pendingcb++;
state.lastBufferedRequest = null;
if (holder.next) {
state.corkedRequestsFree = holder.next;
holder.next = null;
} else {
state.corkedRequestsFree = new CorkedRequest(state);
}
state.bufferedRequestCount = 0;
} else {
// Slow case, write chunks one-by-one
while (entry) {
var chunk = entry.chunk;
var encoding = entry.encoding;
var cb = entry.callback;
var len = state.objectMode ? 1 : chunk.length;
doWrite(stream, state, false, len, chunk, encoding, cb);
entry = entry.next;
state.bufferedRequestCount--;
// if we didn't call the onwrite immediately, then
// it means that we need to wait until it does.
// also, that means that the chunk and cb are currently
// being processed, so move the buffer counter past them.
if (state.writing) {
break;
}
}
if (entry === null) state.lastBufferedRequest = null;
}
state.bufferedRequest = entry;
state.bufferProcessing = false;
}
Writable.prototype._write = function (chunk, encoding, cb) {
cb(new Error('_write() is not implemented'));
};
Writable.prototype._writev = null;
Writable.prototype.end = function (chunk, encoding, cb) {
var state = this._writableState;
if (typeof chunk === 'function') {
cb = chunk;
chunk = null;
encoding = null;
} else if (typeof encoding === 'function') {
cb = encoding;
encoding = null;
}
if (chunk !== null && chunk !== undefined) this.write(chunk, encoding);
// .end() fully uncorks
if (state.corked) {
state.corked = 1;
this.uncork();
}
// ignore unnecessary end() calls.
if (!state.ending && !state.finished) endWritable(this, state, cb);
};
function needFinish(state) {
return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing;
}
function callFinal(stream, state) {
stream._final(function (err) {
state.pendingcb--;
if (err) {
stream.emit('error', err);
}
state.prefinished = true;
stream.emit('prefinish');
finishMaybe(stream, state);
});
}
function prefinish(stream, state) {
if (!state.prefinished && !state.finalCalled) {
if (typeof stream._final === 'function') {
state.pendingcb++;
state.finalCalled = true;
pna.nextTick(callFinal, stream, state);
} else {
state.prefinished = true;
stream.emit('prefinish');
}
}
}
function finishMaybe(stream, state) {
var need = needFinish(state);
if (need) {
prefinish(stream, state);
if (state.pendingcb === 0) {
state.finished = true;
stream.emit('finish');
}
}
return need;
}
function endWritable(stream, state, cb) {
state.ending = true;
finishMaybe(stream, state);
if (cb) {
if (state.finished) pna.nextTick(cb);else stream.once('finish', cb);
}
state.ended = true;
stream.writable = false;
}
function onCorkedFinish(corkReq, state, err) {
var entry = corkReq.entry;
corkReq.entry = null;
while (entry) {
var cb = entry.callback;
state.pendingcb--;
cb(err);
entry = entry.next;
}
if (state.corkedRequestsFree) {
state.corkedRequestsFree.next = corkReq;
} else {
state.corkedRequestsFree = corkReq;
}
}
Object.defineProperty(Writable.prototype, 'destroyed', {
get: function () {
if (this._writableState === undefined) {
return false;
}
return this._writableState.destroyed;
},
set: function (value) {
// we ignore the value if the stream
// has not been initialized yet
if (!this._writableState) {
return;
}
// backward compatibility, the user is explicitly
// managing destroyed
this._writableState.destroyed = value;
}
});
Writable.prototype.destroy = destroyImpl.destroy;
Writable.prototype._undestroy = destroyImpl.undestroy;
Writable.prototype._destroy = function (err, cb) {
this.end();
cb(err);
};
}).call(this)}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("timers").setImmediate)
},{"./_stream_duplex":81,"./internal/streams/destroy":87,"./internal/streams/stream":88,"_process":79,"core-util-is":13,"inherits":47,"process-nextick-args":78,"safe-buffer":89,"timers":111,"util-deprecate":112}],86:[function(require,module,exports){
'use strict';
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var Buffer = require('safe-buffer').Buffer;
var util = require('util');
function copyBuffer(src, target, offset) {
src.copy(target, offset);
}
module.exports = function () {
function BufferList() {
_classCallCheck(this, BufferList);
this.head = null;
this.tail = null;
this.length = 0;
}
BufferList.prototype.push = function push(v) {
var entry = { data: v, next: null };
if (this.length > 0) this.tail.next = entry;else this.head = entry;
this.tail = entry;
++this.length;
};
BufferList.prototype.unshift = function unshift(v) {
var entry = { data: v, next: this.head };
if (this.length === 0) this.tail = entry;
this.head = entry;
++this.length;
};
BufferList.prototype.shift = function shift() {
if (this.length === 0) return;
var ret = this.head.data;
if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;
--this.length;
return ret;
};
BufferList.prototype.clear = function clear() {
this.head = this.tail = null;
this.length = 0;
};
BufferList.prototype.join = function join(s) {
if (this.length === 0) return '';
var p = this.head;
var ret = '' + p.data;
while (p = p.next) {
ret += s + p.data;
}return ret;
};
BufferList.prototype.concat = function concat(n) {
if (this.length === 0) return Buffer.alloc(0);
if (this.length === 1) return this.head.data;
var ret = Buffer.allocUnsafe(n >>> 0);
var p = this.head;
var i = 0;
while (p) {
copyBuffer(p.data, ret, i);
i += p.data.length;
p = p.next;
}
return ret;
};
return BufferList;
}();
if (util && util.inspect && util.inspect.custom) {
module.exports.prototype[util.inspect.custom] = function () {
var obj = util.inspect({ length: this.length });
return this.constructor.name + ' ' + obj;
};
}
},{"safe-buffer":89,"util":9}],87:[function(require,module,exports){
'use strict';
/*<replacement>*/
var pna = require('process-nextick-args');
/*</replacement>*/
// undocumented cb() API, needed for core, not for public API
function destroy(err, cb) {
var _this = this;
var readableDestroyed = this._readableState && this._readableState.destroyed;
var writableDestroyed = this._writableState && this._writableState.destroyed;
if (readableDestroyed || writableDestroyed) {
if (cb) {
cb(err);
} else if (err && (!this._writableState || !this._writableState.errorEmitted)) {
pna.nextTick(emitErrorNT, this, err);
}
return this;
}
// we set destroyed to true before firing error callbacks in order
// to make it re-entrance safe in case destroy() is called within callbacks
if (this._readableState) {
this._readableState.destroyed = true;
}
// if this is a duplex stream mark the writable part as destroyed as well
if (this._writableState) {
this._writableState.destroyed = true;
}
this._destroy(err || null, function (err) {
if (!cb && err) {
pna.nextTick(emitErrorNT, _this, err);
if (_this._writableState) {
_this._writableState.errorEmitted = true;
}
} else if (cb) {
cb(err);
}
});
return this;
}
function undestroy() {
if (this._readableState) {
this._readableState.destroyed = false;
this._readableState.reading = false;
this._readableState.ended = false;
this._readableState.endEmitted = false;
}
if (this._writableState) {
this._writableState.destroyed = false;
this._writableState.ended = false;
this._writableState.ending = false;
this._writableState.finished = false;
this._writableState.errorEmitted = false;
}
}
function emitErrorNT(self, err) {
self.emit('error', err);
}
module.exports = {
destroy: destroy,
undestroy: undestroy
};
},{"process-nextick-args":78}],88:[function(require,module,exports){
module.exports = require('events').EventEmitter;
},{"events":33}],89:[function(require,module,exports){
/* eslint-disable node/no-deprecated-api */
var buffer = require('buffer')
var Buffer = buffer.Buffer
// alternative to using Object.keys for old browsers
function copyProps (src, dst) {
for (var key in src) {
dst[key] = src[key]
}
}
if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
module.exports = buffer
} else {
// Copy properties from require('buffer')
copyProps(buffer, exports)
exports.Buffer = SafeBuffer
}
function SafeBuffer (arg, encodingOrOffset, length) {
return Buffer(arg, encodingOrOffset, length)
}
// Copy static methods from Buffer
copyProps(Buffer, SafeBuffer)
SafeBuffer.from = function (arg, encodingOrOffset, length) {
if (typeof arg === 'number') {
throw new TypeError('Argument must not be a number')
}
return Buffer(arg, encodingOrOffset, length)
}
SafeBuffer.alloc = function (size, fill, encoding) {
if (typeof size !== 'number') {
throw new TypeError('Argument must be a number')
}
var buf = Buffer(size)
if (fill !== undefined) {
if (typeof encoding === 'string') {
buf.fill(fill, encoding)
} else {
buf.fill(fill)
}
} else {
buf.fill(0)
}
return buf
}
SafeBuffer.allocUnsafe = function (size) {
if (typeof size !== 'number') {
throw new TypeError('Argument must be a number')
}
return Buffer(size)
}
SafeBuffer.allocUnsafeSlow = function (size) {
if (typeof size !== 'number') {
throw new TypeError('Argument must be a number')
}
return buffer.SlowBuffer(size)
}
},{"buffer":10}],90:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
/*<replacement>*/
var Buffer = require('safe-buffer').Buffer;
/*</replacement>*/
var isEncoding = Buffer.isEncoding || function (encoding) {
encoding = '' + encoding;
switch (encoding && encoding.toLowerCase()) {
case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw':
return true;
default:
return false;
}
};
function _normalizeEncoding(enc) {
if (!enc) return 'utf8';
var retried;
while (true) {
switch (enc) {
case 'utf8':
case 'utf-8':
return 'utf8';
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return 'utf16le';
case 'latin1':
case 'binary':
return 'latin1';
case 'base64':
case 'ascii':
case 'hex':
return enc;
default:
if (retried) return; // undefined
enc = ('' + enc).toLowerCase();
retried = true;
}
}
};
// Do not cache `Buffer.isEncoding` when checking encoding names as some
// modules monkey-patch it to support additional encodings
function normalizeEncoding(enc) {
var nenc = _normalizeEncoding(enc);
if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc);
return nenc || enc;
}
// StringDecoder provides an interface for efficiently splitting a series of
// buffers into a series of JS strings without breaking apart multi-byte
// characters.
exports.StringDecoder = StringDecoder;
function StringDecoder(encoding) {
this.encoding = normalizeEncoding(encoding);
var nb;
switch (this.encoding) {
case 'utf16le':
this.text = utf16Text;
this.end = utf16End;
nb = 4;
break;
case 'utf8':
this.fillLast = utf8FillLast;
nb = 4;
break;
case 'base64':
this.text = base64Text;
this.end = base64End;
nb = 3;
break;
default:
this.write = simpleWrite;
this.end = simpleEnd;
return;
}
this.lastNeed = 0;
this.lastTotal = 0;
this.lastChar = Buffer.allocUnsafe(nb);
}
StringDecoder.prototype.write = function (buf) {
if (buf.length === 0) return '';
var r;
var i;
if (this.lastNeed) {
r = this.fillLast(buf);
if (r === undefined) return '';
i = this.lastNeed;
this.lastNeed = 0;
} else {
i = 0;
}
if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i);
return r || '';
};
StringDecoder.prototype.end = utf8End;
// Returns only complete characters in a Buffer
StringDecoder.prototype.text = utf8Text;
// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer
StringDecoder.prototype.fillLast = function (buf) {
if (this.lastNeed <= buf.length) {
buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed);
return this.lastChar.toString(this.encoding, 0, this.lastTotal);
}
buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length);
this.lastNeed -= buf.length;
};
// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a
// continuation byte. If an invalid byte is detected, -2 is returned.
function utf8CheckByte(byte) {
if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4;
return byte >> 6 === 0x02 ? -1 : -2;
}
// Checks at most 3 bytes at the end of a Buffer in order to detect an
// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4)
// needed to complete the UTF-8 character (if applicable) are returned.
function utf8CheckIncomplete(self, buf, i) {
var j = buf.length - 1;
if (j < i) return 0;
var nb = utf8CheckByte(buf[j]);
if (nb >= 0) {
if (nb > 0) self.lastNeed = nb - 1;
return nb;
}
if (--j < i || nb === -2) return 0;
nb = utf8CheckByte(buf[j]);
if (nb >= 0) {
if (nb > 0) self.lastNeed = nb - 2;
return nb;
}
if (--j < i || nb === -2) return 0;
nb = utf8CheckByte(buf[j]);
if (nb >= 0) {
if (nb > 0) {
if (nb === 2) nb = 0;else self.lastNeed = nb - 3;
}
return nb;
}
return 0;
}
// Validates as many continuation bytes for a multi-byte UTF-8 character as
// needed or are available. If we see a non-continuation byte where we expect
// one, we "replace" the validated continuation bytes we've seen so far with
// a single UTF-8 replacement character ('\ufffd'), to match v8's UTF-8 decoding
// behavior. The continuation byte check is included three times in the case
// where all of the continuation bytes for a character exist in the same buffer.
// It is also done this way as a slight performance increase instead of using a
// loop.
function utf8CheckExtraBytes(self, buf, p) {
if ((buf[0] & 0xC0) !== 0x80) {
self.lastNeed = 0;
return '\ufffd';
}
if (self.lastNeed > 1 && buf.length > 1) {
if ((buf[1] & 0xC0) !== 0x80) {
self.lastNeed = 1;
return '\ufffd';
}
if (self.lastNeed > 2 && buf.length > 2) {
if ((buf[2] & 0xC0) !== 0x80) {
self.lastNeed = 2;
return '\ufffd';
}
}
}
}
// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer.
function utf8FillLast(buf) {
var p = this.lastTotal - this.lastNeed;
var r = utf8CheckExtraBytes(this, buf, p);
if (r !== undefined) return r;
if (this.lastNeed <= buf.length) {
buf.copy(this.lastChar, p, 0, this.lastNeed);
return this.lastChar.toString(this.encoding, 0, this.lastTotal);
}
buf.copy(this.lastChar, p, 0, buf.length);
this.lastNeed -= buf.length;
}
// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a
// partial character, the character's bytes are buffered until the required
// number of bytes are available.
function utf8Text(buf, i) {
var total = utf8CheckIncomplete(this, buf, i);
if (!this.lastNeed) return buf.toString('utf8', i);
this.lastTotal = total;
var end = buf.length - (total - this.lastNeed);
buf.copy(this.lastChar, 0, end);
return buf.toString('utf8', i, end);
}
// For UTF-8, a replacement character is added when ending on a partial
// character.
function utf8End(buf) {
var r = buf && buf.length ? this.write(buf) : '';
if (this.lastNeed) return r + '\ufffd';
return r;
}
// UTF-16LE typically needs two bytes per character, but even if we have an even
// number of bytes available, we need to check if we end on a leading/high
// surrogate. In that case, we need to wait for the next two bytes in order to
// decode the last character properly.
function utf16Text(buf, i) {
if ((buf.length - i) % 2 === 0) {
var r = buf.toString('utf16le', i);
if (r) {
var c = r.charCodeAt(r.length - 1);
if (c >= 0xD800 && c <= 0xDBFF) {
this.lastNeed = 2;
this.lastTotal = 4;
this.lastChar[0] = buf[buf.length - 2];
this.lastChar[1] = buf[buf.length - 1];
return r.slice(0, -1);
}
}
return r;
}
this.lastNeed = 1;
this.lastTotal = 2;
this.lastChar[0] = buf[buf.length - 1];
return buf.toString('utf16le', i, buf.length - 1);
}
// For UTF-16LE we do not explicitly append special replacement characters if we
// end on a partial character, we simply let v8 handle that.
function utf16End(buf) {
var r = buf && buf.length ? this.write(buf) : '';
if (this.lastNeed) {
var end = this.lastTotal - this.lastNeed;
return r + this.lastChar.toString('utf16le', 0, end);
}
return r;
}
function base64Text(buf, i) {
var n = (buf.length - i) % 3;
if (n === 0) return buf.toString('base64', i);
this.lastNeed = 3 - n;
this.lastTotal = 3;
if (n === 1) {
this.lastChar[0] = buf[buf.length - 1];
} else {
this.lastChar[0] = buf[buf.length - 2];
this.lastChar[1] = buf[buf.length - 1];
}
return buf.toString('base64', i, buf.length - n);
}
function base64End(buf) {
var r = buf && buf.length ? this.write(buf) : '';
if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed);
return r;
}
// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex)
function simpleWrite(buf) {
return buf.toString(this.encoding);
}
function simpleEnd(buf) {
return buf && buf.length ? this.write(buf) : '';
}
},{"safe-buffer":89}],91:[function(require,module,exports){
module.exports = require('./readable').PassThrough
},{"./readable":92}],92:[function(require,module,exports){
exports = module.exports = require('./lib/_stream_readable.js');
exports.Stream = exports;
exports.Readable = exports;
exports.Writable = require('./lib/_stream_writable.js');
exports.Duplex = require('./lib/_stream_duplex.js');
exports.Transform = require('./lib/_stream_transform.js');
exports.PassThrough = require('./lib/_stream_passthrough.js');
},{"./lib/_stream_duplex.js":81,"./lib/_stream_passthrough.js":82,"./lib/_stream_readable.js":83,"./lib/_stream_transform.js":84,"./lib/_stream_writable.js":85}],93:[function(require,module,exports){
module.exports = require('./readable').Transform
},{"./readable":92}],94:[function(require,module,exports){
module.exports = require('./lib/_stream_writable.js');
},{"./lib/_stream_writable.js":85}],95:[function(require,module,exports){
'use strict';
var $Object = Object;
var $TypeError = TypeError;
module.exports = function flags() {
if (this != null && this !== $Object(this)) {
throw new $TypeError('RegExp.prototype.flags getter called on non-object');
}
var result = '';
if (this.global) {
result += 'g';
}
if (this.ignoreCase) {
result += 'i';
}
if (this.multiline) {
result += 'm';
}
if (this.dotAll) {
result += 's';
}
if (this.unicode) {
result += 'u';
}
if (this.sticky) {
result += 'y';
}
return result;
};
},{}],96:[function(require,module,exports){
'use strict';
var define = require('define-properties');
var callBind = require('call-bind');
var implementation = require('./implementation');
var getPolyfill = require('./polyfill');
var shim = require('./shim');
var flagsBound = callBind(implementation);
define(flagsBound, {
getPolyfill: getPolyfill,
implementation: implementation,
shim: shim
});
module.exports = flagsBound;
},{"./implementation":95,"./polyfill":97,"./shim":98,"call-bind":12,"define-properties":16}],97:[function(require,module,exports){
'use strict';
var implementation = require('./implementation');
var supportsDescriptors = require('define-properties').supportsDescriptors;
var $gOPD = Object.getOwnPropertyDescriptor;
var $TypeError = TypeError;
module.exports = function getPolyfill() {
if (!supportsDescriptors) {
throw new $TypeError('RegExp.prototype.flags requires a true ES5 environment that supports property descriptors');
}
if ((/a/mig).flags === 'gim') {
var descriptor = $gOPD(RegExp.prototype, 'flags');
if (descriptor && typeof descriptor.get === 'function' && typeof (/a/).dotAll === 'boolean') {
return descriptor.get;
}
}
return implementation;
};
},{"./implementation":95,"define-properties":16}],98:[function(require,module,exports){
'use strict';
var supportsDescriptors = require('define-properties').supportsDescriptors;
var getPolyfill = require('./polyfill');
var gOPD = Object.getOwnPropertyDescriptor;
var defineProperty = Object.defineProperty;
var TypeErr = TypeError;
var getProto = Object.getPrototypeOf;
var regex = /a/;
module.exports = function shimFlags() {
if (!supportsDescriptors || !getProto) {
throw new TypeErr('RegExp.prototype.flags requires a true ES5 environment that supports property descriptors');
}
var polyfill = getPolyfill();
var proto = getProto(regex);
var descriptor = gOPD(proto, 'flags');
if (!descriptor || descriptor.get !== polyfill) {
defineProperty(proto, 'flags', {
configurable: true,
enumerable: false,
get: polyfill
});
}
return polyfill;
};
},{"./polyfill":97,"define-properties":16}],99:[function(require,module,exports){
(function (process,setImmediate){(function (){
var through = require('through');
var nextTick = typeof setImmediate !== 'undefined'
? setImmediate
: process.nextTick
;
module.exports = function (write, end) {
var tr = through(write, end);
tr.pause();
var resume = tr.resume;
var pause = tr.pause;
var paused = false;
tr.pause = function () {
paused = true;
return pause.apply(this, arguments);
};
tr.resume = function () {
paused = false;
return resume.apply(this, arguments);
};
nextTick(function () {
if (!paused) tr.resume();
});
return tr;
};
}).call(this)}).call(this,require('_process'),require("timers").setImmediate)
},{"_process":79,"through":110,"timers":111}],100:[function(require,module,exports){
'use strict';
var GetIntrinsic = require('get-intrinsic');
var callBound = require('call-bind/callBound');
var inspect = require('object-inspect');
var $TypeError = GetIntrinsic('%TypeError%');
var $WeakMap = GetIntrinsic('%WeakMap%', true);
var $Map = GetIntrinsic('%Map%', true);
var $weakMapGet = callBound('WeakMap.prototype.get', true);
var $weakMapSet = callBound('WeakMap.prototype.set', true);
var $weakMapHas = callBound('WeakMap.prototype.has', true);
var $mapGet = callBound('Map.prototype.get', true);
var $mapSet = callBound('Map.prototype.set', true);
var $mapHas = callBound('Map.prototype.has', true);
/*
* This function traverses the list returning the node corresponding to the
* given key.
*
* That node is also moved to the head of the list, so that if it's accessed
* again we don't need to traverse the whole list. By doing so, all the recently
* used nodes can be accessed relatively quickly.
*/
var listGetNode = function (list, key) { // eslint-disable-line consistent-return
for (var prev = list, curr; (curr = prev.next) !== null; prev = curr) {
if (curr.key === key) {
prev.next = curr.next;
curr.next = list.next;
list.next = curr; // eslint-disable-line no-param-reassign
return curr;
}
}
};
var listGet = function (objects, key) {
var node = listGetNode(objects, key);
return node && node.value;
};
var listSet = function (objects, key, value) {
var node = listGetNode(objects, key);
if (node) {
node.value = value;
} else {
// Prepend the new node to the beginning of the list
objects.next = { // eslint-disable-line no-param-reassign
key: key,
next: objects.next,
value: value
};
}
};
var listHas = function (objects, key) {
return !!listGetNode(objects, key);
};
module.exports = function getSideChannel() {
var $wm;
var $m;
var $o;
var channel = {
assert: function (key) {
if (!channel.has(key)) {
throw new $TypeError('Side channel does not contain ' + inspect(key));
}
},
get: function (key) { // eslint-disable-line consistent-return
if ($WeakMap && key && (typeof key === 'object' || typeof key === 'function')) {
if ($wm) {
return $weakMapGet($wm, key);
}
} else if ($Map) {
if ($m) {
return $mapGet($m, key);
}
} else {
if ($o) { // eslint-disable-line no-lonely-if
return listGet($o, key);
}
}
},
has: function (key) {
if ($WeakMap && key && (typeof key === 'object' || typeof key === 'function')) {
if ($wm) {
return $weakMapHas($wm, key);
}
} else if ($Map) {
if ($m) {
return $mapHas($m, key);
}
} else {
if ($o) { // eslint-disable-line no-lonely-if
return listHas($o, key);
}
}
return false;
},
set: function (key, value) {
if ($WeakMap && key && (typeof key === 'object' || typeof key === 'function')) {
if (!$wm) {
$wm = new $WeakMap();
}
$weakMapSet($wm, key, value);
} else if ($Map) {
if (!$m) {
$m = new $Map();
}
$mapSet($m, key, value);
} else {
if (!$o) {
/*
* Initialize the linked list as an empty node, so that we don't have
* to special-case handling of the first node: we can always refer to
* it as (previous node).next, instead of something like (list).head
*/
$o = { key: {}, next: null };
}
listSet($o, key, value);
}
}
};
return channel;
};
},{"call-bind/callBound":11,"get-intrinsic":39,"object-inspect":65}],101:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
module.exports = Stream;
var EE = require('events').EventEmitter;
var inherits = require('inherits');
inherits(Stream, EE);
Stream.Readable = require('readable-stream/readable.js');
Stream.Writable = require('readable-stream/writable.js');
Stream.Duplex = require('readable-stream/duplex.js');
Stream.Transform = require('readable-stream/transform.js');
Stream.PassThrough = require('readable-stream/passthrough.js');
// Backwards-compat with node 0.4.x
Stream.Stream = Stream;
// old-style streams. Note that the pipe method (the only relevant
// part of this class) is overridden in the Readable class.
function Stream() {
EE.call(this);
}
Stream.prototype.pipe = function(dest, options) {
var source = this;
function ondata(chunk) {
if (dest.writable) {
if (false === dest.write(chunk) && source.pause) {
source.pause();
}
}
}
source.on('data', ondata);
function ondrain() {
if (source.readable && source.resume) {
source.resume();
}
}
dest.on('drain', ondrain);
// If the 'end' option is not supplied, dest.end() will be called when
// source gets the 'end' or 'close' events. Only dest.end() once.
if (!dest._isStdio && (!options || options.end !== false)) {
source.on('end', onend);
source.on('close', onclose);
}
var didOnEnd = false;
function onend() {
if (didOnEnd) return;
didOnEnd = true;
dest.end();
}
function onclose() {
if (didOnEnd) return;
didOnEnd = true;
if (typeof dest.destroy === 'function') dest.destroy();
}
// don't leave dangling pipes when there are errors.
function onerror(er) {
cleanup();
if (EE.listenerCount(this, 'error') === 0) {
throw er; // Unhandled stream error in pipe.
}
}
source.on('error', onerror);
dest.on('error', onerror);
// remove all the event listeners that were added.
function cleanup() {
source.removeListener('data', ondata);
dest.removeListener('drain', ondrain);
source.removeListener('end', onend);
source.removeListener('close', onclose);
source.removeListener('error', onerror);
dest.removeListener('error', onerror);
source.removeListener('end', cleanup);
source.removeListener('close', cleanup);
dest.removeListener('close', cleanup);
}
source.on('end', cleanup);
source.on('close', cleanup);
dest.on('close', cleanup);
dest.emit('pipe', source);
// Allow for unix-like usage: A.pipe(B).pipe(C)
return dest;
};
},{"events":33,"inherits":47,"readable-stream/duplex.js":80,"readable-stream/passthrough.js":91,"readable-stream/readable.js":92,"readable-stream/transform.js":93,"readable-stream/writable.js":94}],102:[function(require,module,exports){
'use strict';
var RequireObjectCoercible = require('es-abstract/2021/RequireObjectCoercible');
var ToString = require('es-abstract/2021/ToString');
var callBound = require('call-bind/callBound');
var $replace = callBound('String.prototype.replace');
/* eslint-disable no-control-regex */
var leftWhitespace = /^[\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028\u2029\uFEFF]+/;
var rightWhitespace = /[\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028\u2029\uFEFF]+$/;
/* eslint-enable no-control-regex */
module.exports = function trim() {
var S = ToString(RequireObjectCoercible(this));
return $replace($replace(S, leftWhitespace, ''), rightWhitespace, '');
};
},{"call-bind/callBound":11,"es-abstract/2021/RequireObjectCoercible":19,"es-abstract/2021/ToString":23}],103:[function(require,module,exports){
'use strict';
var callBind = require('call-bind');
var define = require('define-properties');
var implementation = require('./implementation');
var getPolyfill = require('./polyfill');
var shim = require('./shim');
var boundTrim = callBind(getPolyfill());
define(boundTrim, {
getPolyfill: getPolyfill,
implementation: implementation,
shim: shim
});
module.exports = boundTrim;
},{"./implementation":102,"./polyfill":104,"./shim":105,"call-bind":12,"define-properties":16}],104:[function(require,module,exports){
'use strict';
var implementation = require('./implementation');
var zeroWidthSpace = '\u200b';
module.exports = function getPolyfill() {
if (String.prototype.trim && zeroWidthSpace.trim() === zeroWidthSpace) {
return String.prototype.trim;
}
return implementation;
};
},{"./implementation":102}],105:[function(require,module,exports){
'use strict';
var define = require('define-properties');
var getPolyfill = require('./polyfill');
module.exports = function shimStringTrim() {
var polyfill = getPolyfill();
define(String.prototype, { trim: polyfill }, {
trim: function testTrim() {
return String.prototype.trim !== polyfill;
}
});
return polyfill;
};
},{"./polyfill":104,"define-properties":16}],106:[function(require,module,exports){
(function (process){(function (){
'use strict';
var defined = require('defined');
var createDefaultStream = require('./lib/default_stream');
var Test = require('./lib/test');
var createResult = require('./lib/results');
var through = require('through');
var canEmitExit = typeof process !== 'undefined' && process
&& typeof process.on === 'function' && process.browser !== true;
var canExit = typeof process !== 'undefined' && process
&& typeof process.exit === 'function';
module.exports = (function () {
var wait = false;
var harness;
var lazyLoad = function () {
// eslint-disable-next-line no-invalid-this
return getHarness().apply(this, arguments);
};
lazyLoad.wait = function () {
wait = true;
};
lazyLoad.run = function () {
var run = getHarness().run;
if (run) { run(); }
};
lazyLoad.only = function () {
return getHarness().only.apply(this, arguments);
};
lazyLoad.createStream = function (opts) {
var options = opts || {};
if (!harness) {
var output = through();
getHarness({ stream: output, objectMode: options.objectMode });
return output;
}
return harness.createStream(options);
};
lazyLoad.onFinish = function () {
return getHarness().onFinish.apply(this, arguments);
};
lazyLoad.onFailure = function () {
return getHarness().onFailure.apply(this, arguments);
};
lazyLoad.getHarness = getHarness;
return lazyLoad;
function getHarness(opts) {
if (!opts) { opts = {}; }
opts.autoclose = !canEmitExit;
if (!harness) { harness = createExitHarness(opts, wait); }
return harness;
}
}());
function createExitHarness(conf, wait) {
var config = conf || {};
var harness = createHarness({
autoclose: defined(config.autoclose, false),
noOnly: defined(conf.noOnly, defined(process.env.NODE_TAPE_NO_ONLY_TEST, false))
});
var running = false;
var ended = false;
if (wait) {
harness.run = run;
} else {
run();
}
if (config.exit === false) { return harness; }
if (!canEmitExit || !canExit) { return harness; }
process.on('exit', function (code) {
// let the process exit cleanly.
if (typeof code === 'number' && code !== 0) {
return;
}
if (!ended) {
var only = harness._results._only;
for (var i = 0; i < harness._tests.length; i++) {
var t = harness._tests[i];
if (!only || t === only) {
t._exit();
}
}
}
harness.close();
process.removeAllListeners('exit'); // necessary for node v0.6
process.exit(code || harness._exitCode); // eslint-disable-line no-process-exit
});
return harness;
function run() {
if (running) { return; }
running = true;
var stream = harness.createStream({ objectMode: config.objectMode });
var es = stream.pipe(config.stream || createDefaultStream());
if (canEmitExit) {
// TODO: use `err` arg?
// eslint-disable-next-line no-unused-vars
es.on('error', function (err) { harness._exitCode = 1; });
}
stream.on('end', function () { ended = true; });
}
}
module.exports.createHarness = createHarness;
module.exports.Test = Test;
module.exports.test = module.exports; // tap compat
module.exports.test.skip = Test.skip;
function createHarness(conf_) {
var results = createResult();
if (!conf_ || conf_.autoclose !== false) {
results.once('done', function () { results.close(); });
}
var test = function (name, conf, cb) {
var t = new Test(name, conf, cb);
test._tests.push(t);
(function inspectCode(st) {
st.on('test', function sub(st_) {
inspectCode(st_);
});
st.on('result', function (r) {
if (!r.todo && !r.ok && typeof r !== 'string') { test._exitCode = 1; }
});
}(t));
results.push(t);
return t;
};
test._results = results;
test._tests = [];
test.createStream = function (opts) {
return results.createStream(opts);
};
test.onFinish = function (cb) {
results.on('done', cb);
};
test.onFailure = function (cb) {
results.on('fail', cb);
};
var only = false;
test.only = function () {
if (only) { throw new Error('there can only be one only test'); }
if (conf_.noOnly) { throw new Error('`only` tests are prohibited'); }
only = true;
var t = test.apply(null, arguments);
results.only(t);
return t;
};
test._exitCode = 0;
test.close = function () { results.close(); };
return test;
}
}).call(this)}).call(this,require('_process'))
},{"./lib/default_stream":107,"./lib/results":108,"./lib/test":109,"_process":79,"defined":17,"through":110}],107:[function(require,module,exports){
(function (process){(function (){
'use strict';
var through = require('through');
var fs = require('fs');
module.exports = function () {
var line = '';
var stream = through(write, flush);
return stream;
function write(buf) {
for (var i = 0; i < buf.length; i++) {
var c = typeof buf === 'string'
? buf.charAt(i)
: String.fromCharCode(buf[i]);
if (c === '\n') {
flush();
} else {
line += c;
}
}
}
function flush() {
if (fs.writeSync && (/^win/).test(process.platform)) {
try {
fs.writeSync(1, line + '\n');
} catch (e) {
stream.emit('error', e);
}
} else {
try {
console.log(line); // eslint-disable-line no-console
} catch (e) {
stream.emit('error', e);
}
}
line = '';
}
};
}).call(this)}).call(this,require('_process'))
},{"_process":79,"fs":9,"through":110}],108:[function(require,module,exports){
(function (process,setImmediate){(function (){
'use strict';
var defined = require('defined');
var EventEmitter = require('events').EventEmitter;
var inherits = require('inherits');
var through = require('through');
var resumer = require('resumer');
var inspect = require('object-inspect');
var callBound = require('call-bind/callBound');
var has = require('has');
var regexpTest = callBound('RegExp.prototype.test');
var $split = callBound('String.prototype.split');
var $replace = callBound('String.prototype.replace');
var $shift = callBound('Array.prototype.shift');
var $push = callBound('Array.prototype.push');
var yamlIndicators = /:|-|\?/;
var nextTick = typeof setImmediate !== 'undefined'
? setImmediate
: process.nextTick;
module.exports = Results;
inherits(Results, EventEmitter);
function coalesceWhiteSpaces(str) {
return $replace(String(str), /\s+/g, ' ');
}
function Results() {
if (!(this instanceof Results)) { return new Results(); }
this.count = 0;
this.fail = 0;
this.pass = 0;
this.todo = 0;
this._stream = through();
this.tests = [];
this._only = null;
this._isRunning = false;
}
Results.prototype.createStream = function (opts) {
if (!opts) { opts = {}; }
var self = this;
var output;
var testId = 0;
if (opts.objectMode) {
output = through();
self.on('_push', function ontest(t, extra) {
if (!extra) { extra = {}; }
var id = testId++;
t.once('prerun', function () {
var row = {
type: 'test',
name: t.name,
id: id,
skip: t._skip,
todo: t._todo
};
if (has(extra, 'parent')) {
row.parent = extra.parent;
}
output.queue(row);
});
t.on('test', function (st) {
ontest(st, { parent: id });
});
t.on('result', function (res) {
if (res && typeof res === 'object') {
res.test = id;
res.type = 'assert';
}
output.queue(res);
});
t.on('end', function () {
output.queue({ type: 'end', test: id });
});
});
self.on('done', function () { output.queue(null); });
} else {
output = resumer();
output.queue('TAP version 13\n');
self._stream.pipe(output);
}
if (!this._isRunning) {
this._isRunning = true;
nextTick(function next() {
var t;
while (t = getNextTest(self)) {
t.run();
if (!t.ended) {
t.once('end', function () { nextTick(next); });
return;
}
}
self.emit('done');
});
}
return output;
};
Results.prototype.push = function (t) {
var self = this;
$push(self.tests, t);
self._watch(t);
self.emit('_push', t);
};
Results.prototype.only = function (t) {
this._only = t;
};
Results.prototype._watch = function (t) {
var self = this;
var write = function (s) { self._stream.queue(s); };
t.once('prerun', function () {
var premsg = '';
if (t._skip) {
premsg = 'SKIP ';
} else if (t._todo) {
premsg = 'TODO ';
}
write('# ' + premsg + coalesceWhiteSpaces(t.name) + '\n');
});
t.on('result', function (res) {
if (typeof res === 'string') {
write('# ' + res + '\n');
return;
}
write(encodeResult(res, self.count + 1));
self.count++;
if (res.ok || res.todo) {
self.pass++;
} else {
self.fail++;
self.emit('fail');
}
});
t.on('test', function (st) { self._watch(st); });
};
Results.prototype.close = function () {
var self = this;
if (self.closed) { self._stream.emit('error', new Error('ALREADY CLOSED')); }
self.closed = true;
var write = function (s) { self._stream.queue(s); };
write('\n1..' + self.count + '\n');
write('# tests ' + self.count + '\n');
write('# pass ' + (self.pass + self.todo) + '\n');
if (self.todo) { write('# todo ' + self.todo + '\n'); }
if (self.fail) {
write('# fail ' + self.fail + '\n');
} else {
write('\n# ok\n');
}
self._stream.queue(null);
};
function encodeResult(res, count) {
var output = '';
output += (res.ok ? 'ok ' : 'not ok ') + count;
output += res.name ? ' ' + coalesceWhiteSpaces(res.name) : '';
if (res.skip) {
output += ' # SKIP' + (typeof res.skip === 'string' ? ' ' + coalesceWhiteSpaces(res.skip) : '');
} else if (res.todo) {
output += ' # TODO' + (typeof res.todo === 'string' ? ' ' + coalesceWhiteSpaces(res.todo) : '');
}
output += '\n';
if (res.ok) { return output; }
var outer = ' ';
var inner = outer + ' ';
output += outer + '---\n';
output += inner + 'operator: ' + res.operator + '\n';
if (has(res, 'expected') || has(res, 'actual')) {
var ex = inspect(res.expected, { depth: res.objectPrintDepth });
var ac = inspect(res.actual, { depth: res.objectPrintDepth });
if (Math.max(ex.length, ac.length) > 65 || invalidYaml(ex) || invalidYaml(ac)) {
output += inner + 'expected: |-\n' + inner + ' ' + ex + '\n';
output += inner + 'actual: |-\n' + inner + ' ' + ac + '\n';
} else {
output += inner + 'expected: ' + ex + '\n';
output += inner + 'actual: ' + ac + '\n';
}
}
if (res.at) {
output += inner + 'at: ' + res.at + '\n';
}
var actualStack = res.actual && (typeof res.actual === 'object' || typeof res.actual === 'function') ? res.actual.stack : undefined;
var errorStack = res.error && res.error.stack;
var stack = defined(actualStack, errorStack);
if (stack) {
var lines = $split(String(stack), '\n');
output += inner + 'stack: |-\n';
for (var i = 0; i < lines.length; i++) {
output += inner + ' ' + lines[i] + '\n';
}
}
output += outer + '...\n';
return output;
}
function getNextTest(results) {
if (!results._only) {
return $shift(results.tests);
}
do {
var t = $shift(results.tests);
if (t && results._only === t) {
return t;
}
} while (results.tests.length !== 0);
return void undefined;
}
function invalidYaml(str) {
return regexpTest(yamlIndicators, str);
}
}).call(this)}).call(this,require('_process'),require("timers").setImmediate)
},{"_process":79,"call-bind/callBound":11,"defined":17,"events":33,"has":45,"inherits":47,"object-inspect":65,"resumer":99,"through":110,"timers":111}],109:[function(require,module,exports){
(function (process,setImmediate,__dirname){(function (){
'use strict';
var deepEqual = require('deep-equal');
var defined = require('defined');
var path = require('path');
var inherits = require('inherits');
var EventEmitter = require('events').EventEmitter;
var has = require('has');
var isRegExp = require('is-regex');
var trim = require('string.prototype.trim');
var callBound = require('call-bind/callBound');
var forEach = require('for-each');
var inspect = require('object-inspect');
var is = require('object-is');
var objectKeys = require('object-keys');
var every = require('array.prototype.every');
var isEnumerable = callBound('Object.prototype.propertyIsEnumerable');
var toLowerCase = callBound('String.prototype.toLowerCase');
var isProto = callBound('Object.prototype.isPrototypeOf');
var $exec = callBound('RegExp.prototype.exec');
var objectToString = callBound('Object.prototype.toString');
var $split = callBound('String.prototype.split');
var $replace = callBound('String.prototype.replace');
var $strSlice = callBound('String.prototype.slice');
var $push = callBound('Array.prototype.push');
var $shift = callBound('Array.prototype.shift');
module.exports = Test;
var nextTick = typeof setImmediate !== 'undefined'
? setImmediate
: process.nextTick;
var safeSetTimeout = setTimeout;
var safeClearTimeout = clearTimeout;
inherits(Test, EventEmitter);
// eslint-disable-next-line no-unused-vars
var getTestArgs = function (name_, opts_, cb_) {
var name = '(anonymous)';
var opts = {};
var cb;
for (var i = 0; i < arguments.length; i++) {
var arg = arguments[i];
var t = typeof arg;
if (t === 'string') {
name = arg;
} else if (t === 'object') {
opts = arg || opts;
} else if (t === 'function') {
cb = arg;
}
}
return {
name: name,
opts: opts,
cb: cb
};
};
function Test(name_, opts_, cb_) {
if (!(this instanceof Test)) {
return new Test(name_, opts_, cb_);
}
var args = getTestArgs(name_, opts_, cb_);
this.readable = true;
this.name = args.name || '(anonymous)';
this.assertCount = 0;
this.pendingCount = 0;
this._skip = args.opts.skip || false;
this._todo = args.opts.todo || false;
this._timeout = args.opts.timeout;
this._plan = undefined;
this._cb = args.cb;
this._progeny = [];
this._teardown = [];
this._ok = true;
var depthEnvVar = process.env.NODE_TAPE_OBJECT_PRINT_DEPTH;
if (args.opts.objectPrintDepth) {
this._objectPrintDepth = args.opts.objectPrintDepth;
} else if (depthEnvVar) {
if (toLowerCase(depthEnvVar) === 'infinity') {
this._objectPrintDepth = Infinity;
} else {
this._objectPrintDepth = depthEnvVar;
}
} else {
this._objectPrintDepth = 5;
}
for (var prop in this) {
this[prop] = (function bind(self, val) {
if (typeof val === 'function') {
return function bound() {
return val.apply(self, arguments);
};
}
return val;
}(this, this[prop]));
}
}
Test.prototype.run = function run() {
this.emit('prerun');
if (!this._cb || this._skip) {
this._end();
return;
}
if (this._timeout != null) {
this.timeoutAfter(this._timeout);
}
var callbackReturn = this._cb(this);
if (
typeof Promise === 'function'
&& callbackReturn
&& typeof callbackReturn.then === 'function'
) {
var self = this;
Promise.resolve(callbackReturn).then(function onResolve() {
if (!self.calledEnd) {
self.end();
}
})['catch'](function onError(err) {
if (err instanceof Error || objectToString(err) === '[object Error]') {
self.ifError(err);
} else {
self.fail(err);
}
self.end();
});
return;
}
this.emit('run');
};
Test.prototype.test = function test(name, opts, cb) {
var self = this;
var t = new Test(name, opts, cb);
$push(this._progeny, t);
this.pendingCount++;
this.emit('test', t);
t.on('prerun', function () {
self.assertCount++;
});
if (!self._pendingAsserts()) {
nextTick(function () {
self._end();
});
}
nextTick(function () {
if (!self._plan && self.pendingCount == self._progeny.length) {
self._end();
}
});
};
Test.prototype.comment = function comment(msg) {
var that = this;
forEach($split(trim(msg), '\n'), function (aMsg) {
that.emit('result', $replace(trim(aMsg), /^#\s*/, ''));
});
};
Test.prototype.plan = function plan(n) {
this._plan = n;
this.emit('plan', n);
};
Test.prototype.timeoutAfter = function timeoutAfter(ms) {
if (!ms) { throw new Error('timeoutAfter requires a timespan'); }
var self = this;
var timeout = safeSetTimeout(function () {
self.fail(self.name + ' timed out after ' + ms + 'ms');
self.end();
}, ms);
this.once('end', function () {
safeClearTimeout(timeout);
});
};
Test.prototype.end = function end(err) {
if (arguments.length >= 1 && !!err) {
this.ifError(err);
}
if (this.calledEnd) {
this.fail('.end() already called');
}
this.calledEnd = true;
this._end();
};
Test.prototype.teardown = function teardown(fn) {
if (typeof fn !== 'function') {
this.fail('teardown: ' + inspect(fn) + ' is not a function');
} else {
this._teardown.push(fn);
}
};
Test.prototype._end = function _end(err) {
var self = this;
if (!this._cb && !this._todo && !this._skip) {
this.fail('# TODO ' + this.name);
}
if (this._progeny.length) {
var t = $shift(this._progeny);
t.on('end', function () { self._end(); });
t.run();
return;
}
function next() {
if (self._teardown.length === 0) {
completeEnd();
return;
}
var fn = self._teardown.shift();
var res;
try {
res = fn();
} catch (e) {
self.fail(e);
}
if (res && typeof res.then === 'function') {
res.then(next, function (_err) {
// TODO: wth?
err = err || _err;
});
} else {
next();
}
}
next();
function completeEnd() {
if (!self.ended) { self.emit('end'); }
var pendingAsserts = self._pendingAsserts();
if (!self._planError && self._plan !== undefined && pendingAsserts) {
self._planError = true;
self.fail('plan != count', {
expected: self._plan,
actual: self.assertCount
});
}
self.ended = true;
}
};
Test.prototype._exit = function _exit() {
if (this._plan !== undefined && !this._planError && this.assertCount !== this._plan) {
this._planError = true;
this.fail('plan != count', {
expected: this._plan,
actual: this.assertCount,
exiting: true
});
} else if (!this.ended) {
this.fail('test exited without ending: ' + this.name, {
exiting: true
});
}
};
Test.prototype._pendingAsserts = function _pendingAsserts() {
if (this._plan === undefined) {
return 1;
}
return this._plan - (this._progeny.length + this.assertCount);
};
Test.prototype._assert = function assert(ok, opts) {
var self = this;
var extra = opts.extra || {};
ok = !!ok || !!extra.skip;
var name = defined(extra.message, opts.message, '(unnamed assert)');
if (this.calledEnd && opts.operator !== 'fail') {
this.fail('.end() already called: ' + name);
return;
}
var res = {
id: self.assertCount++,
ok: ok,
skip: defined(extra.skip, opts.skip),
todo: defined(extra.todo, opts.todo, self._todo),
name: name,
operator: defined(extra.operator, opts.operator),
objectPrintDepth: self._objectPrintDepth
};
if (has(opts, 'actual') || has(extra, 'actual')) {
res.actual = defined(extra.actual, opts.actual);
}
if (has(opts, 'expected') || has(extra, 'expected')) {
res.expected = defined(extra.expected, opts.expected);
}
this._ok = !!(this._ok && ok);
if (!ok && !res.todo) {
res.error = defined(extra.error, opts.error, new Error(res.name));
}
if (!ok) {
var e = new Error('exception');
var err = $split(e.stack || '', '\n');
var dir = __dirname + path.sep;
for (var i = 0; i < err.length; i++) {
/*
Stack trace lines may resemble one of the following. We need
to correctly extract a function name (if any) and path / line
number for each line.
at myFunction (/path/to/file.js:123:45)
at myFunction (/path/to/file.other-ext:123:45)
at myFunction (/path to/file.js:123:45)
at myFunction (C:\path\to\file.js:123:45)
at myFunction (/path/to/file.js:123)
at Test.<anonymous> (/path/to/file.js:123:45)
at Test.bound [as run] (/path/to/file.js:123:45)
at /path/to/file.js:123:45
Regex has three parts. First is non-capturing group for 'at '
(plus anything preceding it).
/^(?:[^\s]*\s*\bat\s+)/
Second captures function call description (optional). This is
not necessarily a valid JS function name, but just what the
stack trace is using to represent a function call. It may look
like `<anonymous>` or 'Test.bound [as run]'.
For our purposes, we assume that, if there is a function
name, it's everything leading up to the first open
parentheses (trimmed) before our pathname.
/(?:(.*)\s+\()?/
Last part captures file path plus line no (and optional
column no).
/((?:\/|[a-zA-Z]:\\)[^:\)]+:(\d+)(?::(\d+))?)\)?/
*/
var re = /^(?:[^\s]*\s*\bat\s+)(?:(.*)\s+\()?((?:\/|[a-zA-Z]:\\)[^:)]+:(\d+)(?::(\d+))?)\)?$/;
var lineWithTokens = $replace($replace(err[i], process.cwd(), '/$CWD'), __dirname, '/$TEST');
var m = re.exec(lineWithTokens);
if (!m) {
continue;
}
var callDescription = m[1] || '<anonymous>';
var filePath = $replace($replace(m[2], '/$CWD', process.cwd()), '/$TEST', __dirname);
if ($strSlice(filePath, 0, dir.length) === dir) {
continue;
}
// Function call description may not (just) be a function name.
// Try to extract function name by looking at first "word" only.
res.functionName = $split(callDescription, /\s+/)[0];
res.file = filePath;
res.line = Number(m[3]);
if (m[4]) { res.column = Number(m[4]); }
res.at = callDescription + ' (' + filePath + ')';
break;
}
}
self.emit('result', res);
var pendingAsserts = self._pendingAsserts();
if (!pendingAsserts) {
if (extra.exiting) {
self._end();
} else {
nextTick(function () {
self._end();
});
}
}
if (!self._planError && pendingAsserts < 0) {
self._planError = true;
self.fail('plan != count', {
expected: self._plan,
actual: self._plan - pendingAsserts
});
}
};
Test.prototype.fail = function fail(msg, extra) {
this._assert(false, {
message: msg,
operator: 'fail',
extra: extra
});
};
Test.prototype.pass = function pass(msg, extra) {
this._assert(true, {
message: msg,
operator: 'pass',
extra: extra
});
};
Test.prototype.skip = function skip(msg, extra) {
this._assert(true, {
message: msg,
operator: 'skip',
skip: true,
extra: extra
});
};
var testAssert = function assert(value, msg, extra) {
this._assert(value, {
message: defined(msg, 'should be truthy'),
operator: 'ok',
expected: true,
actual: value,
extra: extra
});
};
Test.prototype.ok
= Test.prototype['true']
= Test.prototype.assert
= testAssert;
function notOK(value, msg, extra) {
this._assert(!value, {
message: defined(msg, 'should be falsy'),
operator: 'notOk',
expected: false,
actual: value,
extra: extra
});
}
Test.prototype.notOk
= Test.prototype['false']
= Test.prototype.notok
= notOK;
function error(err, msg, extra) {
this._assert(!err, {
message: defined(msg, String(err)),
operator: 'error',
error: err,
extra: extra
});
}
Test.prototype.error
= Test.prototype.ifError
= Test.prototype.ifErr
= Test.prototype.iferror
= error;
function strictEqual(a, b, msg, extra) {
if (arguments.length < 2) {
throw new TypeError('two arguments must be provided to compare');
}
this._assert(is(a, b), {
message: defined(msg, 'should be strictly equal'),
operator: 'equal',
actual: a,
expected: b,
extra: extra
});
}
Test.prototype.equal
= Test.prototype.equals
= Test.prototype.isEqual
= Test.prototype.strictEqual
= Test.prototype.strictEquals
= Test.prototype.is
= strictEqual;
function notStrictEqual(a, b, msg, extra) {
if (arguments.length < 2) {
throw new TypeError('two arguments must be provided to compare');
}
this._assert(!is(a, b), {
message: defined(msg, 'should not be strictly equal'),
operator: 'notEqual',
actual: a,
expected: b,
extra: extra
});
}
Test.prototype.notEqual
= Test.prototype.notEquals
= Test.prototype.isNotEqual
= Test.prototype.doesNotEqual
= Test.prototype.isInequal
= Test.prototype.notStrictEqual
= Test.prototype.notStrictEquals
= Test.prototype.isNot
= Test.prototype.not
= notStrictEqual;
function looseEqual(a, b, msg, extra) {
if (arguments.length < 2) {
throw new TypeError('two arguments must be provided to compare');
}
this._assert(a == b, {
message: defined(msg, 'should be loosely equal'),
operator: 'looseEqual',
actual: a,
expected: b,
extra: extra
});
}
Test.prototype.looseEqual
= Test.prototype.looseEquals
= looseEqual;
function notLooseEqual(a, b, msg, extra) {
if (arguments.length < 2) {
throw new TypeError('two arguments must be provided to compare');
}
this._assert(a != b, {
message: defined(msg, 'should not be loosely equal'),
operator: 'notLooseEqual',
actual: a,
expected: b,
extra: extra
});
}
Test.prototype.notLooseEqual
= Test.prototype.notLooseEquals
= notLooseEqual;
function tapeDeepEqual(a, b, msg, extra) {
if (arguments.length < 2) {
throw new TypeError('two arguments must be provided to compare');
}
this._assert(deepEqual(a, b, { strict: true }), {
message: defined(msg, 'should be deeply equivalent'),
operator: 'deepEqual',
actual: a,
expected: b,
extra: extra
});
}
Test.prototype.deepEqual
= Test.prototype.deepEquals
= Test.prototype.isEquivalent
= Test.prototype.same
= tapeDeepEqual;
function notDeepEqual(a, b, msg, extra) {
if (arguments.length < 2) {
throw new TypeError('two arguments must be provided to compare');
}
this._assert(!deepEqual(a, b, { strict: true }), {
message: defined(msg, 'should not be deeply equivalent'),
operator: 'notDeepEqual',
actual: a,
expected: b,
extra: extra
});
}
Test.prototype.notDeepEqual
= Test.prototype.notDeepEquals
= Test.prototype.notEquivalent
= Test.prototype.notDeeply
= Test.prototype.notSame
= Test.prototype.isNotDeepEqual
= Test.prototype.isNotDeeply
= Test.prototype.isNotEquivalent
= Test.prototype.isInequivalent
= notDeepEqual;
function deepLooseEqual(a, b, msg, extra) {
if (arguments.length < 2) {
throw new TypeError('two arguments must be provided to compare');
}
this._assert(deepEqual(a, b), {
message: defined(msg, 'should be loosely deeply equivalent'),
operator: 'deepLooseEqual',
actual: a,
expected: b,
extra: extra
});
}
Test.prototype.deepLooseEqual
= deepLooseEqual;
function notDeepLooseEqual(a, b, msg, extra) {
if (arguments.length < 2) {
throw new TypeError('two arguments must be provided to compare');
}
this._assert(!deepEqual(a, b), {
message: defined(msg, 'should not be loosely deeply equivalent'),
operator: 'notDeepLooseEqual',
actual: a,
expected: b,
extra: extra
});
}
Test.prototype.notDeepLooseEqual
= notDeepLooseEqual;
Test.prototype['throws'] = function (fn, expected, msg, extra) {
if (typeof expected === 'string') {
msg = expected;
expected = undefined;
}
var caught;
try {
fn();
} catch (err) {
caught = { error: err };
if (Object(err) === err && (!isEnumerable(err, 'message') || !has(err, 'message'))) {
var message = err.message;
delete err.message;
err.message = message;
}
}
var passed = caught;
if (caught) {
if (typeof expected === 'string' && caught.error && caught.error.message === expected) {
throw new TypeError('The "error/message" argument is ambiguous. The error message ' + inspect(expected) + ' is identical to the message.');
}
if (typeof expected === 'function') {
if (typeof expected.prototype !== 'undefined' && caught.error instanceof expected) {
passed = true;
} else if (isProto(Error, expected)) {
passed = false;
} else {
passed = expected.call({}, caught.error) === true;
}
} else if (isRegExp(expected)) {
passed = $exec(expected, caught.error) !== null;
expected = inspect(expected);
} else if (expected && typeof expected === 'object') { // Handle validation objects.
var keys = objectKeys(expected);
// Special handle errors to make sure the name and the message are compared as well.
if (expected instanceof Error) {
$push(keys, 'name', 'message');
} else if (keys.length === 0) {
throw new TypeError('`throws` validation object must not be empty');
}
passed = every(keys, function (key) {
if (typeof caught.error[key] === 'string' && isRegExp(expected[key]) && $exec(expected[key], caught.error[key]) !== null) {
return true;
}
if (key in caught.error && deepEqual(caught.error[key], expected[key], { strict: true })) {
return true;
}
return false;
});
}
}
this._assert(!!passed, {
message: defined(msg, 'should throw'),
operator: 'throws',
actual: caught && caught.error,
expected: expected,
error: !passed && caught && caught.error,
extra: extra
});
};
Test.prototype.doesNotThrow = function doesNotThrow(fn, expected, msg, extra) {
if (typeof expected === 'string') {
msg = expected;
expected = undefined;
}
var caught;
try {
fn();
} catch (err) {
caught = { error: err };
}
this._assert(!caught, {
message: defined(msg, 'should not throw'),
operator: 'throws',
actual: caught && caught.error,
expected: expected,
error: caught && caught.error,
extra: extra
});
};
Test.prototype.match = function match(string, regexp, msg, extra) {
if (!isRegExp(regexp)) {
this._assert(false, {
message: defined(msg, 'The "regexp" argument must be an instance of RegExp. Received type ' + typeof regexp + ' (' + inspect(regexp) + ')'),
operator: 'match',
actual: objectToString(regexp),
expected: '[object RegExp]',
extra: extra
});
} else if (typeof string !== 'string') {
this._assert(false, {
message: defined(msg, 'The "string" argument must be of type string. Received type ' + typeof string + ' (' + inspect(string) + ')'),
operator: 'match',
actual: string === null ? null : typeof string,
expected: 'string',
extra: extra
});
} else {
var matches = $exec(regexp, string) !== null;
var message = defined(
msg,
'The input ' + (matches ? 'matched' : 'did not match') + ' the regular expression ' + inspect(regexp) + '. Input: ' + inspect(string)
);
this._assert(matches, {
message: message,
operator: 'match',
actual: string,
expected: regexp,
extra: extra
});
}
};
Test.prototype.doesNotMatch = function doesNotMatch(string, regexp, msg, extra) {
if (!isRegExp(regexp)) {
this._assert(false, {
message: defined(msg, 'The "regexp" argument must be an instance of RegExp. Received type ' + typeof regexp + ' (' + inspect(regexp) + ')'),
operator: 'doesNotMatch',
actual: objectToString(regexp),
expected: '[object RegExp]',
extra: extra
});
} else if (typeof string !== 'string') {
this._assert(false, {
message: defined(msg, 'The "string" argument must be of type string. Received type ' + typeof string + ' (' + inspect(string) + ')'),
operator: 'doesNotMatch',
actual: string === null ? null : typeof string,
expected: 'string',
extra: extra
});
} else {
var matches = $exec(regexp, string) !== null;
var message = defined(
msg,
'The input ' + (matches ? 'was expected to not match' : 'did not match') + ' the regular expression ' + inspect(regexp) + '. Input: ' + inspect(string)
);
this._assert(!matches, {
message: message,
operator: 'doesNotMatch',
actual: string,
expected: regexp,
extra: extra
});
}
};
// eslint-disable-next-line no-unused-vars
Test.skip = function skip(name_, _opts, _cb) {
var args = getTestArgs.apply(null, arguments);
args.opts.skip = true;
return new Test(args.name, args.opts, args.cb);
};
// vim: set softtabstop=4 shiftwidth=4:
}).call(this)}).call(this,require('_process'),require("timers").setImmediate,"/node_modules/tape/lib")
},{"_process":79,"array.prototype.every":4,"call-bind/callBound":11,"deep-equal":14,"defined":17,"events":33,"for-each":34,"has":45,"inherits":47,"is-regex":55,"object-inspect":65,"object-is":67,"object-keys":71,"path":77,"string.prototype.trim":103,"timers":111}],110:[function(require,module,exports){
(function (process){(function (){
var Stream = require('stream')
// through
//
// a stream that does nothing but re-emit the input.
// useful for aggregating a series of changing but not ending streams into one stream)
exports = module.exports = through
through.through = through
//create a readable writable stream.
function through (write, end, opts) {
write = write || function (data) { this.queue(data) }
end = end || function () { this.queue(null) }
var ended = false, destroyed = false, buffer = [], _ended = false
var stream = new Stream()
stream.readable = stream.writable = true
stream.paused = false
// stream.autoPause = !(opts && opts.autoPause === false)
stream.autoDestroy = !(opts && opts.autoDestroy === false)
stream.write = function (data) {
write.call(this, data)
return !stream.paused
}
function drain() {
while(buffer.length && !stream.paused) {
var data = buffer.shift()
if(null === data)
return stream.emit('end')
else
stream.emit('data', data)
}
}
stream.queue = stream.push = function (data) {
// console.error(ended)
if(_ended) return stream
if(data === null) _ended = true
buffer.push(data)
drain()
return stream
}
//this will be registered as the first 'end' listener
//must call destroy next tick, to make sure we're after any
//stream piped from here.
//this is only a problem if end is not emitted synchronously.
//a nicer way to do this is to make sure this is the last listener for 'end'
stream.on('end', function () {
stream.readable = false
if(!stream.writable && stream.autoDestroy)
process.nextTick(function () {
stream.destroy()
})
})
function _end () {
stream.writable = false
end.call(stream)
if(!stream.readable && stream.autoDestroy)
stream.destroy()
}
stream.end = function (data) {
if(ended) return
ended = true
if(arguments.length) stream.write(data)
_end() // will emit or queue
return stream
}
stream.destroy = function () {
if(destroyed) return
destroyed = true
ended = true
buffer.length = 0
stream.writable = stream.readable = false
stream.emit('close')
return stream
}
stream.pause = function () {
if(stream.paused) return
stream.paused = true
return stream
}
stream.resume = function () {
if(stream.paused) {
stream.paused = false
stream.emit('resume')
}
drain()
//may have become paused again,
//as drain emits 'data'.
if(!stream.paused)
stream.emit('drain')
return stream
}
return stream
}
}).call(this)}).call(this,require('_process'))
},{"_process":79,"stream":101}],111:[function(require,module,exports){
(function (setImmediate,clearImmediate){(function (){
var nextTick = require('process/browser.js').nextTick;
var apply = Function.prototype.apply;
var slice = Array.prototype.slice;
var immediateIds = {};
var nextImmediateId = 0;
// DOM APIs, for completeness
exports.setTimeout = function() {
return new Timeout(apply.call(setTimeout, window, arguments), clearTimeout);
};
exports.setInterval = function() {
return new Timeout(apply.call(setInterval, window, arguments), clearInterval);
};
exports.clearTimeout =
exports.clearInterval = function(timeout) { timeout.close(); };
function Timeout(id, clearFn) {
this._id = id;
this._clearFn = clearFn;
}
Timeout.prototype.unref = Timeout.prototype.ref = function() {};
Timeout.prototype.close = function() {
this._clearFn.call(window, this._id);
};
// Does not start the time, just sets up the members needed.
exports.enroll = function(item, msecs) {
clearTimeout(item._idleTimeoutId);
item._idleTimeout = msecs;
};
exports.unenroll = function(item) {
clearTimeout(item._idleTimeoutId);
item._idleTimeout = -1;
};
exports._unrefActive = exports.active = function(item) {
clearTimeout(item._idleTimeoutId);
var msecs = item._idleTimeout;
if (msecs >= 0) {
item._idleTimeoutId = setTimeout(function onTimeout() {
if (item._onTimeout)
item._onTimeout();
}, msecs);
}
};
// That's not how node.js implements it but the exposed api is the same.
exports.setImmediate = typeof setImmediate === "function" ? setImmediate : function(fn) {
var id = nextImmediateId++;
var args = arguments.length < 2 ? false : slice.call(arguments, 1);
immediateIds[id] = true;
nextTick(function onNextTick() {
if (immediateIds[id]) {
// fn.call() is faster so we optimize for the common use-case
// @see http://jsperf.com/call-apply-segu
if (args) {
fn.apply(null, args);
} else {
fn.call(null);
}
// Prevent ids from leaking
exports.clearImmediate(id);
}
});
return id;
};
exports.clearImmediate = typeof clearImmediate === "function" ? clearImmediate : function(id) {
delete immediateIds[id];
};
}).call(this)}).call(this,require("timers").setImmediate,require("timers").clearImmediate)
},{"process/browser.js":79,"timers":111}],112:[function(require,module,exports){
(function (global){(function (){
/**
* Module exports.
*/
module.exports = deprecate;
/**
* Mark that a method should not be used.
* Returns a modified function which warns once by default.
*
* If `localStorage.noDeprecation = true` is set, then it is a no-op.
*
* If `localStorage.throwDeprecation = true` is set, then deprecated functions
* will throw an Error when invoked.
*
* If `localStorage.traceDeprecation = true` is set, then deprecated functions
* will invoke `console.trace()` instead of `console.error()`.
*
* @param {Function} fn - the function to deprecate
* @param {String} msg - the string to print to the console when `fn` is invoked
* @returns {Function} a new "deprecated" version of `fn`
* @api public
*/
function deprecate (fn, msg) {
if (config('noDeprecation')) {
return fn;
}
var warned = false;
function deprecated() {
if (!warned) {
if (config('throwDeprecation')) {
throw new Error(msg);
} else if (config('traceDeprecation')) {
console.trace(msg);
} else {
console.warn(msg);
}
warned = true;
}
return fn.apply(this, arguments);
}
return deprecated;
}
/**
* Checks `localStorage` for boolean values for the given `name`.
*
* @param {String} name
* @returns {Boolean}
* @api private
*/
function config (name) {
// accessing global.localStorage can trigger a DOMException in sandboxed iframes
try {
if (!global.localStorage) return false;
} catch (_) {
return false;
}
var val = global.localStorage[name];
if (null == val) return false;
return String(val).toLowerCase() === 'true';
}
}).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],113:[function(require,module,exports){
'use strict';
var isString = require('is-string');
var isNumber = require('is-number-object');
var isBoolean = require('is-boolean-object');
var isSymbol = require('is-symbol');
var isBigInt = require('is-bigint');
// eslint-disable-next-line consistent-return
module.exports = function whichBoxedPrimitive(value) {
// eslint-disable-next-line eqeqeq
if (value == null || (typeof value !== 'object' && typeof value !== 'function')) {
return null;
}
if (isString(value)) {
return 'String';
}
if (isNumber(value)) {
return 'Number';
}
if (isBoolean(value)) {
return 'Boolean';
}
if (isSymbol(value)) {
return 'Symbol';
}
if (isBigInt(value)) {
return 'BigInt';
}
};
},{"is-bigint":49,"is-boolean-object":50,"is-number-object":54,"is-string":57,"is-symbol":58}],114:[function(require,module,exports){
'use strict';
var isMap = require('is-map');
var isSet = require('is-set');
var isWeakMap = require('is-weakmap');
var isWeakSet = require('is-weakset');
module.exports = function whichCollection(value) {
if (value && typeof value === 'object') {
if (isMap(value)) {
return 'Map';
}
if (isSet(value)) {
return 'Set';
}
if (isWeakMap(value)) {
return 'WeakMap';
}
if (isWeakSet(value)) {
return 'WeakSet';
}
}
return false;
};
},{"is-map":53,"is-set":56,"is-weakmap":60,"is-weakset":61}],115:[function(require,module,exports){
(function (global){(function (){
'use strict';
var forEach = require('foreach');
var availableTypedArrays = require('available-typed-arrays');
var callBound = require('call-bind/callBound');
var $toString = callBound('Object.prototype.toString');
var hasToStringTag = require('has-tostringtag/shams')();
var g = typeof globalThis === 'undefined' ? global : globalThis;
var typedArrays = availableTypedArrays();
var $slice = callBound('String.prototype.slice');
var toStrTags = {};
var gOPD = require('es-abstract/helpers/getOwnPropertyDescriptor');
var getPrototypeOf = Object.getPrototypeOf; // require('getprototypeof');
if (hasToStringTag && gOPD && getPrototypeOf) {
forEach(typedArrays, function (typedArray) {
if (typeof g[typedArray] === 'function') {
var arr = new g[typedArray]();
if (Symbol.toStringTag in arr) {
var proto = getPrototypeOf(arr);
var descriptor = gOPD(proto, Symbol.toStringTag);
if (!descriptor) {
var superProto = getPrototypeOf(proto);
descriptor = gOPD(superProto, Symbol.toStringTag);
}
toStrTags[typedArray] = descriptor.get;
}
}
});
}
var tryTypedArrays = function tryAllTypedArrays(value) {
var foundName = false;
forEach(toStrTags, function (getter, typedArray) {
if (!foundName) {
try {
var name = getter.call(value);
if (name === typedArray) {
foundName = name;
}
} catch (e) {}
}
});
return foundName;
};
var isTypedArray = require('is-typed-array');
module.exports = function whichTypedArray(value) {
if (!isTypedArray(value)) { return false; }
if (!hasToStringTag || !(Symbol.toStringTag in value)) { return $slice($toString(value), 8, -1); }
return tryTypedArrays(value);
};
}).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"available-typed-arrays":7,"call-bind/callBound":11,"es-abstract/helpers/getOwnPropertyDescriptor":26,"foreach":35,"has-tostringtag/shams":44,"is-typed-array":59}],116:[function(require,module,exports){
arguments[4][75][0].apply(exports,arguments)
},{"./implementation":1,"dup":75}],117:[function(require,module,exports){
arguments[4][76][0].apply(exports,arguments)
},{"./polyfill":116,"define-properties":16,"dup":76}],118:[function(require,module,exports){
'use strict';
var assign = require('../');
var test = require('tape');
var runTests = require('./tests');
test('as a function', function (t) {
t.test('bad array/this value', function (st) {
st['throws'](function () { assign(undefined); }, TypeError, 'undefined is not an object');
st['throws'](function () { assign(null); }, TypeError, 'null is not an object');
st.end();
});
runTests(assign, t);
t.end();
});
},{"../":2,"./tests":119,"tape":106}],119:[function(require,module,exports){
'use strict';
var hasSymbols = require('has-symbols/shams')();
var forEach = require('for-each');
var has = require('has');
var mockProperty = require('mock-property');
module.exports = function (assign, t) {
t.test('error cases', function (st) {
st['throws'](function () { assign(null); }, TypeError, 'target must be an object');
st['throws'](function () { assign(undefined); }, TypeError, 'target must be an object');
st['throws'](function () { assign(null, {}); }, TypeError, 'target must be an object');
st['throws'](function () { assign(undefined, {}); }, TypeError, 'target must be an object');
st.end();
});
t.test('non-object target, no sources', function (st) {
var bool = assign(true);
st.equal(typeof bool, 'object', 'bool is object');
st.equal(Boolean.prototype.valueOf.call(bool), true, 'bool coerces to `true`');
var number = assign(1);
st.equal(typeof number, 'object', 'number is object');
st.equal(Number.prototype.valueOf.call(number), 1, 'number coerces to `1`');
var string = assign('1');
st.equal(typeof string, 'object', 'number is object');
st.equal(String.prototype.valueOf.call(string), '1', 'number coerces to `"1"`');
st.end();
});
t.test('non-object target, with sources', function (st) {
var signal = {};
st.test('boolean', function (st2) {
var bool = assign(true, { a: signal });
st2.equal(typeof bool, 'object', 'bool is object');
st2.equal(Boolean.prototype.valueOf.call(bool), true, 'bool coerces to `true`');
st2.equal(bool.a, signal, 'source properties copied');
st2.end();
});
st.test('number', function (st2) {
var number = assign(1, { a: signal });
st2.equal(typeof number, 'object', 'number is object');
st2.equal(Number.prototype.valueOf.call(number), 1, 'number coerces to `1`');
st2.equal(number.a, signal, 'source properties copied');
st2.end();
});
st.test('string', function (st2) {
var string = assign('1', { a: signal });
st2.equal(typeof string, 'object', 'number is object');
st2.equal(String.prototype.valueOf.call(string), '1', 'number coerces to `"1"`');
st2.equal(string.a, signal, 'source properties copied');
st2.end();
});
st.end();
});
t.test('non-object sources', function (st) {
st.deepEqual(assign({ a: 1 }, null, { b: 2 }), { a: 1, b: 2 }, 'ignores null source');
st.deepEqual(assign({ a: 1 }, { b: 2 }, undefined), { a: 1, b: 2 }, 'ignores undefined source');
st.end();
});
t.test('returns the modified target object', function (st) {
var target = {};
var returned = assign(target, { a: 1 });
st.equal(returned, target, 'returned object is the same reference as the target object');
st.end();
});
t.test('has the right length', function (st) {
st.equal(assign.length, 2, 'length is 2 => 2 required arguments');
st.end();
});
t.test('merge two objects', function (st) {
var target = { a: 1 };
var returned = assign(target, { b: 2 });
st.deepEqual(returned, { a: 1, b: 2 }, 'returned object has properties from both');
st.end();
});
t.test('works with functions', function (st) {
var target = function () {};
target.a = 1;
var returned = assign(target, { b: 2 });
st.equal(target, returned, 'returned object is target');
st.equal(returned.a, 1);
st.equal(returned.b, 2);
st.end();
});
t.test('works with primitives', function (st) {
var target = 2;
var source = { b: 42 };
var returned = assign(target, source);
st.equal(Object.prototype.toString.call(returned), '[object Number]', 'returned is object form of number primitive');
st.equal(Number(returned), target, 'returned and target have same valueOf');
st.equal(returned.b, source.b);
st.end();
});
/* globals window */
t.test('works with window.location', { skip: typeof window === 'undefined' }, function (st) {
var target = {};
assign(target, window.location);
for (var prop in window.location) {
if (has(window.location, prop)) {
st.deepEqual(target[prop], window.location[prop], prop + ' is copied');
}
}
st.end();
});
t.test('merge N objects', function (st) {
var target = { a: 1 };
var source1 = { b: 2 };
var source2 = { c: 3 };
var returned = assign(target, source1, source2);
st.deepEqual(returned, { a: 1, b: 2, c: 3 }, 'returned object has properties from all sources');
st.end();
});
t.test('only iterates over own keys', function (st) {
var Foo = function () {};
Foo.prototype.bar = true;
var foo = new Foo();
foo.baz = true;
var target = { a: 1 };
var returned = assign(target, foo);
st.equal(returned, target, 'returned object is the same reference as the target object');
st.deepEqual(target, { a: 1, baz: true }, 'returned object has only own properties from both');
st.end();
});
t.test('includes enumerable symbols, after keys', { skip: !hasSymbols }, function (st) {
var visited = [];
var obj = {};
Object.defineProperty(obj, 'a', { enumerable: true, get: function () { visited.push('a'); return 42; } });
var symbol = Symbol('enumerable');
Object.defineProperty(obj, symbol, {
enumerable: true,
get: function () { visited.push(symbol); return Infinity; }
});
var nonEnumSymbol = Symbol('non-enumerable');
Object.defineProperty(obj, nonEnumSymbol, {
enumerable: false,
get: function () { visited.push(nonEnumSymbol); return -Infinity; }
});
var target = assign({}, obj);
st.deepEqual(visited, ['a', symbol], 'key is visited first, then symbol');
st.equal(target.a, 42, 'target.a is 42');
st.equal(target[symbol], Infinity, 'target[symbol] is Infinity');
st.notEqual(target[nonEnumSymbol], -Infinity, 'target[nonEnumSymbol] is not -Infinity');
st.end();
});
t.test('does not fail when symbols are not present', { skip: !Object.isFrozen || Object.isFrozen(Object) }, function (st) {
st.teardown(mockProperty(Object, 'getOwnPropertySymbols', { 'delete': true }));
var visited = [];
var obj = {};
Object.defineProperty(obj, 'a', { enumerable: true, get: function () { visited.push('a'); return 42; } });
var keys = ['a'];
if (hasSymbols) {
var symbol = Symbol('sym');
Object.defineProperty(obj, symbol, {
enumerable: true,
get: function () { visited.push(symbol); return Infinity; }
});
keys.push(symbol);
}
var target = assign({}, obj);
st.deepEqual(visited, keys, 'assign visits expected keys');
st.equal(target.a, 42, 'target.a is 42');
if (hasSymbols) {
st.equal(target[symbol], Infinity);
}
st.end();
});
t.test('preserves correct property enumeration order', function (st) {
var str = 'abcdefghijklmnopqrst';
var letters = {};
forEach(str.split(''), function (letter) {
letters[letter] = letter;
});
var n = 5;
st.comment('run the next test ' + n + ' times');
var object = assign({}, letters);
var actual = '';
for (var k in object) {
actual += k;
}
for (var i = 0; i < n; ++i) {
st.equal(actual, str, 'property enumeration order should be followed');
}
st.end();
});
t.test('checks enumerability and existence, in case of modification during [[Get]]', { skip: !Object.defineProperty }, function (st) {
var targetBvalue = {};
var targetCvalue = {};
var target = { b: targetBvalue, c: targetCvalue };
var source = {};
Object.defineProperty(source, 'a', {
enumerable: true,
get: function () {
delete this.b;
Object.defineProperty(this, 'c', { enumerable: false });
return 'a';
}
});
var sourceBvalue = {};
var sourceCvalue = {};
source.b = sourceBvalue;
source.c = sourceCvalue;
var result = assign(target, source);
st.equal(result, target, 'sanity check: result is === target');
st.equal(result.b, targetBvalue, 'target key not overwritten by deleted source key');
st.equal(result.c, targetCvalue, 'target key not overwritten by non-enumerable source key');
st.end();
});
};
},{"for-each":34,"has":45,"has-symbols/shams":43,"mock-property":63}]},{},[118])
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r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c=\"function\"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error(\"Cannot find module '\"+i+\"'\");throw a.code=\"MODULE_NOT_FOUND\",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u=\"function\"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()","'use strict';\n\n// modified from https://github.com/es-shims/es6-shim\nvar keys = require('object-keys');\nvar hasSymbols = require('has-symbols/shams')();\nvar callBound = require('call-bind/callBound');\nvar toObject = Object;\nvar $push = callBound('Array.prototype.push');\nvar $propIsEnumerable = callBound('Object.prototype.propertyIsEnumerable');\nvar originalGetSymbols = hasSymbols ? Object.getOwnPropertySymbols : null;\n\n// eslint-disable-next-line no-unused-vars\nmodule.exports = function assign(target, source1) {\n\tif (target == null) { throw new TypeError('target must be an object'); }\n\tvar objTarget = toObject(target);\n\tvar s, source, i, props, syms, value, key;\n\tfor (s = 1; s < arguments.length; ++s) {\n\t\tsource = toObject(arguments[s]);\n\t\tprops = keys(source);\n\t\tvar getSymbols = hasSymbols && (Object.getOwnPropertySymbols || originalGetSymbols);\n\t\tif (getSymbols) {\n\t\t\tsyms = getSymbols(source);\n\t\t\tfor (i = 0; i < syms.length; ++i) {\n\t\t\t\tkey = syms[i];\n\t\t\t\tif ($propIsEnumerable(source, key)) {\n\t\t\t\t\t$push(props, key);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\tfor (i = 0; i < props.length; ++i) {\n\t\t\tkey = props[i];\n\t\t\tvalue = source[key];\n\t\t\tif ($propIsEnumerable(source, key)) {\n\t\t\t\tobjTarget[key] = value;\n\t\t\t}\n\t\t}\n\t}\n\treturn objTarget;\n};\n","'use strict';\n\nvar defineProperties = require('define-properties');\nvar callBind = require('call-bind');\n\nvar implementation = require('./implementation');\nvar getPolyfill = require('./polyfill');\nvar shim = require('./shim');\n\nvar polyfill = callBind.apply(getPolyfill());\n// eslint-disable-next-line no-unused-vars\nvar bound = function assign(target, source1) {\n\treturn polyfill(Object, arguments);\n};\n\ndefineProperties(bound, {\n\tgetPolyfill: getPolyfill,\n\timplementation: implementation,\n\tshim: shim\n});\n\nmodule.exports = bound;\n","'use strict';\n\nvar IsCallable = require('es-abstract/2021/IsCallable');\nvar ToObject = require('es-abstract/2021/ToObject');\nvar ToUint32 = require('es-abstract/2021/ToUint32');\nvar callBound = require('call-bind/callBound');\nvar isString = require('is-string');\n\n// Check failure of by-index access of string characters (IE < 9) and failure of `0 in boxedString` (Rhino)\nvar boxedString = Object('a');\nvar splitString = boxedString[0] !== 'a' || !(0 in boxedString);\n\nvar $split = callBound('String.prototype.split');\n\nmodule.exports = function every(callbackfn) {\n\tvar O = ToObject(this);\n\tvar self = splitString && isString(O) ? $split(O, '') : O;\n\tvar len = ToUint32(self.length);\n\tvar T;\n\tif (arguments.length > 1) {\n\t\tT = arguments[1];\n\t}\n\n\t// If no callback function or if callback is not a callable function\n\tif (!IsCallable(callbackfn)) {\n\t\tthrow new TypeError('Array.prototype.every callback must be a function');\n\t}\n\n\tfor (var i = 0; i < len; i++) {\n\t\tif (i in self && !(typeof T === 'undefined' ? callbackfn(self[i], i, O) : callbackfn.call(T, self[i], i, O))) {\n\t\t\treturn false;\n\t\t}\n\t}\n\treturn true;\n};\n","'use strict';\n\nvar define = require('define-properties');\nvar RequireObjectCoercible = require('es-abstract/2021/RequireObjectCoercible');\nvar callBound = require('call-bind/callBound');\n\nvar implementation = require('./implementation');\nvar getPolyfill = require('./polyfill');\nvar polyfill = getPolyfill();\nvar shim = require('./shim');\n\nvar $slice = callBound('Array.prototype.slice');\n\n// eslint-disable-next-line no-unused-vars\nvar boundEveryShim = function every(array, callbackfn) {\n\tRequireObjectCoercible(array);\n\treturn polyfill.apply(array, $slice(arguments, 1));\n};\ndefine(boundEveryShim, {\n\tgetPolyfill: getPolyfill,\n\timplementation: implementation,\n\tshim: shim\n});\n\nmodule.exports = boundEveryShim;\n","var implementation = require('./implementation');\n\nmodule.exports = function getPolyfill() {\n\tif (typeof Array.prototype.every === 'function') {\n\t\tvar hasPrimitiveContextInStrict = [1].every(function () {\n\t\t\t'use strict';\n\n\t\t\treturn typeof this === 'string' && this === 'x';\n\t\t}, 'x');\n\t\tif (hasPrimitiveContextInStrict) {\n\t\t\treturn Array.prototype.every;\n\t\t}\n\t}\n\treturn implementation;\n};\n","'use strict';\n\nvar define = require('define-properties');\nvar getPolyfill = require('./polyfill');\n\nmodule.exports = function shimArrayPrototypeEvery() {\n\tvar polyfill = getPolyfill();\n\tdefine(\n\t\tArray.prototype,\n\t\t{ every: polyfill },\n\t\t{ every: function () { return Array.prototype.every !== polyfill; } }\n\t);\n\treturn polyfill;\n};\n","'use strict';\n\nvar possibleNames = [\n\t'BigInt64Array',\n\t'BigUint64Array',\n\t'Float32Array',\n\t'Float64Array',\n\t'Int16Array',\n\t'Int32Array',\n\t'Int8Array',\n\t'Uint16Array',\n\t'Uint32Array',\n\t'Uint8Array',\n\t'Uint8ClampedArray'\n];\n\nvar g = typeof globalThis === 'undefined' ? global : globalThis;\n\nmodule.exports = function availableTypedArrays() {\n\tvar out = [];\n\tfor (var i = 0; i < possibleNames.length; i++) {\n\t\tif (typeof g[possibleNames[i]] === 'function') {\n\t\t\tout[out.length] = possibleNames[i];\n\t\t}\n\t}\n\treturn out;\n};\n","'use strict'\n\nexports.byteLength = byteLength\nexports.toByteArray = toByteArray\nexports.fromByteArray = fromByteArray\n\nvar lookup = []\nvar revLookup = []\nvar Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array\n\nvar code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'\nfor (var i = 0, len = code.length; i < len; ++i) {\n  lookup[i] = code[i]\n  revLookup[code.charCodeAt(i)] = i\n}\n\n// Support decoding URL-safe base64 strings, as Node.js does.\n// See: https://en.wikipedia.org/wiki/Base64#URL_applications\nrevLookup['-'.charCodeAt(0)] = 62\nrevLookup['_'.charCodeAt(0)] = 63\n\nfunction getLens (b64) {\n  var len = b64.length\n\n  if (len % 4 > 0) {\n    throw new Error('Invalid string. Length must be a multiple of 4')\n  }\n\n  // Trim off extra bytes after placeholder bytes are found\n  // See: https://github.com/beatgammit/base64-js/issues/42\n  var validLen = b64.indexOf('=')\n  if (validLen === -1) validLen = len\n\n  var placeHoldersLen = validLen === len\n    ? 0\n    : 4 - (validLen % 4)\n\n  return [validLen, placeHoldersLen]\n}\n\n// base64 is 4/3 + up to two characters of the original data\nfunction byteLength (b64) {\n  var lens = getLens(b64)\n  var validLen = lens[0]\n  var placeHoldersLen = lens[1]\n  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen\n}\n\nfunction _byteLength (b64, validLen, placeHoldersLen) {\n  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen\n}\n\nfunction toByteArray (b64) {\n  var tmp\n  var lens = getLens(b64)\n  var validLen = lens[0]\n  var placeHoldersLen = lens[1]\n\n  var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))\n\n  var curByte = 0\n\n  // if there are placeholders, only get up to the last complete 4 chars\n  var len = placeHoldersLen > 0\n    ? validLen - 4\n    : validLen\n\n  var i\n  for (i = 0; i < len; i += 4) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 18) |\n      (revLookup[b64.charCodeAt(i + 1)] << 12) |\n      (revLookup[b64.charCodeAt(i + 2)] << 6) |\n      revLookup[b64.charCodeAt(i + 3)]\n    arr[curByte++] = (tmp >> 16) & 0xFF\n    arr[curByte++] = (tmp >> 8) & 0xFF\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  if (placeHoldersLen === 2) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 2) |\n      (revLookup[b64.charCodeAt(i + 1)] >> 4)\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  if (placeHoldersLen === 1) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 10) |\n      (revLookup[b64.charCodeAt(i + 1)] << 4) |\n      (revLookup[b64.charCodeAt(i + 2)] >> 2)\n    arr[curByte++] = (tmp >> 8) & 0xFF\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  return arr\n}\n\nfunction tripletToBase64 (num) {\n  return lookup[num >> 18 & 0x3F] +\n    lookup[num >> 12 & 0x3F] +\n    lookup[num >> 6 & 0x3F] +\n    lookup[num & 0x3F]\n}\n\nfunction encodeChunk (uint8, start, end) {\n  var tmp\n  var output = []\n  for (var i = start; i < end; i += 3) {\n    tmp =\n      ((uint8[i] << 16) & 0xFF0000) +\n      ((uint8[i + 1] << 8) & 0xFF00) +\n      (uint8[i + 2] & 0xFF)\n    output.push(tripletToBase64(tmp))\n  }\n  return output.join('')\n}\n\nfunction fromByteArray (uint8) {\n  var tmp\n  var len = uint8.length\n  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes\n  var parts = []\n  var maxChunkLength = 16383 // must be multiple of 3\n\n  // go through the array every three bytes, we'll deal with trailing stuff later\n  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {\n    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))\n  }\n\n  // pad the end with zeros, but make sure to not forget the extra bytes\n  if (extraBytes === 1) {\n    tmp = uint8[len - 1]\n    parts.push(\n      lookup[tmp >> 2] +\n      lookup[(tmp << 4) & 0x3F] +\n      '=='\n    )\n  } else if (extraBytes === 2) {\n    tmp = (uint8[len - 2] << 8) + uint8[len - 1]\n    parts.push(\n      lookup[tmp >> 10] +\n      lookup[(tmp >> 4) & 0x3F] +\n      lookup[(tmp << 2) & 0x3F] +\n      '='\n    )\n  }\n\n  return parts.join('')\n}\n","","/*!\n * The buffer module from node.js, for the browser.\n *\n * @author   Feross Aboukhadijeh <https://feross.org>\n * @license  MIT\n */\n/* eslint-disable no-proto */\n\n'use strict'\n\nvar base64 = require('base64-js')\nvar ieee754 = require('ieee754')\n\nexports.Buffer = Buffer\nexports.SlowBuffer = SlowBuffer\nexports.INSPECT_MAX_BYTES = 50\n\nvar K_MAX_LENGTH = 0x7fffffff\nexports.kMaxLength = K_MAX_LENGTH\n\n/**\n * If `Buffer.TYPED_ARRAY_SUPPORT`:\n *   === true    Use Uint8Array implementation (fastest)\n *   === false   Print warning and recommend using `buffer` v4.x which has an Object\n *               implementation (most compatible, even IE6)\n *\n * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,\n * Opera 11.6+, iOS 4.2+.\n *\n * We report that the browser does not support typed arrays if the are not subclassable\n * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`\n * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support\n * for __proto__ and has a buggy typed array implementation.\n */\nBuffer.TYPED_ARRAY_SUPPORT = typedArraySupport()\n\nif (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' &&\n    typeof console.error === 'function') {\n  console.error(\n    'This browser lacks typed array (Uint8Array) support which is required by ' +\n    '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'\n  )\n}\n\nfunction typedArraySupport () {\n  // Can typed array instances can be augmented?\n  try {\n    var arr = new Uint8Array(1)\n    arr.__proto__ = { __proto__: Uint8Array.prototype, foo: function () { return 42 } }\n    return arr.foo() === 42\n  } catch (e) {\n    return false\n  }\n}\n\nObject.defineProperty(Buffer.prototype, 'parent', {\n  enumerable: true,\n  get: function () {\n    if (!Buffer.isBuffer(this)) return undefined\n    return this.buffer\n  }\n})\n\nObject.defineProperty(Buffer.prototype, 'offset', {\n  enumerable: true,\n  get: function () {\n    if (!Buffer.isBuffer(this)) return undefined\n    return this.byteOffset\n  }\n})\n\nfunction createBuffer (length) {\n  if (length > K_MAX_LENGTH) {\n    throw new RangeError('The value \"' + length + '\" is invalid for option \"size\"')\n  }\n  // Return an augmented `Uint8Array` instance\n  var buf = new Uint8Array(length)\n  buf.__proto__ = Buffer.prototype\n  return buf\n}\n\n/**\n * The Buffer constructor returns instances of `Uint8Array` that have their\n * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of\n * `Uint8Array`, so the returned instances will have all the node `Buffer` methods\n * and the `Uint8Array` methods. Square bracket notation works as expected -- it\n * returns a single octet.\n *\n * The `Uint8Array` prototype remains unmodified.\n */\n\nfunction Buffer (arg, encodingOrOffset, length) {\n  // Common case.\n  if (typeof arg === 'number') {\n    if (typeof encodingOrOffset === 'string') {\n      throw new TypeError(\n        'The \"string\" argument must be of type string. Received type number'\n      )\n    }\n    return allocUnsafe(arg)\n  }\n  return from(arg, encodingOrOffset, length)\n}\n\n// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97\nif (typeof Symbol !== 'undefined' && Symbol.species != null &&\n    Buffer[Symbol.species] === Buffer) {\n  Object.defineProperty(Buffer, Symbol.species, {\n    value: null,\n    configurable: true,\n    enumerable: false,\n    writable: false\n  })\n}\n\nBuffer.poolSize = 8192 // not used by this implementation\n\nfunction from (value, encodingOrOffset, length) {\n  if (typeof value === 'string') {\n    return fromString(value, encodingOrOffset)\n  }\n\n  if (ArrayBuffer.isView(value)) {\n    return fromArrayLike(value)\n  }\n\n  if (value == null) {\n    throw TypeError(\n      'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +\n      'or Array-like Object. Received type ' + (typeof value)\n    )\n  }\n\n  if (isInstance(value, ArrayBuffer) ||\n      (value && isInstance(value.buffer, ArrayBuffer))) {\n    return fromArrayBuffer(value, encodingOrOffset, length)\n  }\n\n  if (typeof value === 'number') {\n    throw new TypeError(\n      'The \"value\" argument must not be of type number. Received type number'\n    )\n  }\n\n  var valueOf = value.valueOf && value.valueOf()\n  if (valueOf != null && valueOf !== value) {\n    return Buffer.from(valueOf, encodingOrOffset, length)\n  }\n\n  var b = fromObject(value)\n  if (b) return b\n\n  if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null &&\n      typeof value[Symbol.toPrimitive] === 'function') {\n    return Buffer.from(\n      value[Symbol.toPrimitive]('string'), encodingOrOffset, length\n    )\n  }\n\n  throw new TypeError(\n    'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +\n    'or Array-like Object. Received type ' + (typeof value)\n  )\n}\n\n/**\n * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError\n * if value is a number.\n * Buffer.from(str[, encoding])\n * Buffer.from(array)\n * Buffer.from(buffer)\n * Buffer.from(arrayBuffer[, byteOffset[, length]])\n **/\nBuffer.from = function (value, encodingOrOffset, length) {\n  return from(value, encodingOrOffset, length)\n}\n\n// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:\n// https://github.com/feross/buffer/pull/148\nBuffer.prototype.__proto__ = Uint8Array.prototype\nBuffer.__proto__ = Uint8Array\n\nfunction assertSize (size) {\n  if (typeof size !== 'number') {\n    throw new TypeError('\"size\" argument must be of type number')\n  } else if (size < 0) {\n    throw new RangeError('The value \"' + size + '\" is invalid for option \"size\"')\n  }\n}\n\nfunction alloc (size, fill, encoding) {\n  assertSize(size)\n  if (size <= 0) {\n    return createBuffer(size)\n  }\n  if (fill !== undefined) {\n    // Only pay attention to encoding if it's a string. This\n    // prevents accidentally sending in a number that would\n    // be interpretted as a start offset.\n    return typeof encoding === 'string'\n      ? createBuffer(size).fill(fill, encoding)\n      : createBuffer(size).fill(fill)\n  }\n  return createBuffer(size)\n}\n\n/**\n * Creates a new filled Buffer instance.\n * alloc(size[, fill[, encoding]])\n **/\nBuffer.alloc = function (size, fill, encoding) {\n  return alloc(size, fill, encoding)\n}\n\nfunction allocUnsafe (size) {\n  assertSize(size)\n  return createBuffer(size < 0 ? 0 : checked(size) | 0)\n}\n\n/**\n * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.\n * */\nBuffer.allocUnsafe = function (size) {\n  return allocUnsafe(size)\n}\n/**\n * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.\n */\nBuffer.allocUnsafeSlow = function (size) {\n  return allocUnsafe(size)\n}\n\nfunction fromString (string, encoding) {\n  if (typeof encoding !== 'string' || encoding === '') {\n    encoding = 'utf8'\n  }\n\n  if (!Buffer.isEncoding(encoding)) {\n    throw new TypeError('Unknown encoding: ' + encoding)\n  }\n\n  var length = byteLength(string, encoding) | 0\n  var buf = createBuffer(length)\n\n  var actual = buf.write(string, encoding)\n\n  if (actual !== length) {\n    // Writing a hex string, for example, that contains invalid characters will\n    // cause everything after the first invalid character to be ignored. (e.g.\n    // 'abxxcd' will be treated as 'ab')\n    buf = buf.slice(0, actual)\n  }\n\n  return buf\n}\n\nfunction fromArrayLike (array) {\n  var length = array.length < 0 ? 0 : checked(array.length) | 0\n  var buf = createBuffer(length)\n  for (var i = 0; i < length; i += 1) {\n    buf[i] = array[i] & 255\n  }\n  return buf\n}\n\nfunction fromArrayBuffer (array, byteOffset, length) {\n  if (byteOffset < 0 || array.byteLength < byteOffset) {\n    throw new RangeError('\"offset\" is outside of buffer bounds')\n  }\n\n  if (array.byteLength < byteOffset + (length || 0)) {\n    throw new RangeError('\"length\" is outside of buffer bounds')\n  }\n\n  var buf\n  if (byteOffset === undefined && length === undefined) {\n    buf = new Uint8Array(array)\n  } else if (length === undefined) {\n    buf = new Uint8Array(array, byteOffset)\n  } else {\n    buf = new Uint8Array(array, byteOffset, length)\n  }\n\n  // Return an augmented `Uint8Array` instance\n  buf.__proto__ = Buffer.prototype\n  return buf\n}\n\nfunction fromObject (obj) {\n  if (Buffer.isBuffer(obj)) {\n    var len = checked(obj.length) | 0\n    var buf = createBuffer(len)\n\n    if (buf.length === 0) {\n      return buf\n    }\n\n    obj.copy(buf, 0, 0, len)\n    return buf\n  }\n\n  if (obj.length !== undefined) {\n    if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {\n      return createBuffer(0)\n    }\n    return fromArrayLike(obj)\n  }\n\n  if (obj.type === 'Buffer' && Array.isArray(obj.data)) {\n    return fromArrayLike(obj.data)\n  }\n}\n\nfunction checked (length) {\n  // Note: cannot use `length < K_MAX_LENGTH` here because that fails when\n  // length is NaN (which is otherwise coerced to zero.)\n  if (length >= K_MAX_LENGTH) {\n    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +\n                         'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes')\n  }\n  return length | 0\n}\n\nfunction SlowBuffer (length) {\n  if (+length != length) { // eslint-disable-line eqeqeq\n    length = 0\n  }\n  return Buffer.alloc(+length)\n}\n\nBuffer.isBuffer = function isBuffer (b) {\n  return b != null && b._isBuffer === true &&\n    b !== Buffer.prototype // so Buffer.isBuffer(Buffer.prototype) will be false\n}\n\nBuffer.compare = function compare (a, b) {\n  if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength)\n  if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength)\n  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {\n    throw new TypeError(\n      'The \"buf1\", \"buf2\" arguments must be one of type Buffer or Uint8Array'\n    )\n  }\n\n  if (a === b) return 0\n\n  var x = a.length\n  var y = b.length\n\n  for (var i = 0, len = Math.min(x, y); i < len; ++i) {\n    if (a[i] !== b[i]) {\n      x = a[i]\n      y = b[i]\n      break\n    }\n  }\n\n  if (x < y) return -1\n  if (y < x) return 1\n  return 0\n}\n\nBuffer.isEncoding = function isEncoding (encoding) {\n  switch (String(encoding).toLowerCase()) {\n    case 'hex':\n    case 'utf8':\n    case 'utf-8':\n    case 'ascii':\n    case 'latin1':\n    case 'binary':\n    case 'base64':\n    case 'ucs2':\n    case 'ucs-2':\n    case 'utf16le':\n    case 'utf-16le':\n      return true\n    default:\n      return false\n  }\n}\n\nBuffer.concat = function concat (list, length) {\n  if (!Array.isArray(list)) {\n    throw new TypeError('\"list\" argument must be an Array of Buffers')\n  }\n\n  if (list.length === 0) {\n    return Buffer.alloc(0)\n  }\n\n  var i\n  if (length === undefined) {\n    length = 0\n    for (i = 0; i < list.length; ++i) {\n      length += list[i].length\n    }\n  }\n\n  var buffer = Buffer.allocUnsafe(length)\n  var pos = 0\n  for (i = 0; i < list.length; ++i) {\n    var buf = list[i]\n    if (isInstance(buf, Uint8Array)) {\n      buf = Buffer.from(buf)\n    }\n    if (!Buffer.isBuffer(buf)) {\n      throw new TypeError('\"list\" argument must be an Array of Buffers')\n    }\n    buf.copy(buffer, pos)\n    pos += buf.length\n  }\n  return buffer\n}\n\nfunction byteLength (string, encoding) {\n  if (Buffer.isBuffer(string)) {\n    return string.length\n  }\n  if (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) {\n    return string.byteLength\n  }\n  if (typeof string !== 'string') {\n    throw new TypeError(\n      'The \"string\" argument must be one of type string, Buffer, or ArrayBuffer. ' +\n      'Received type ' + typeof string\n    )\n  }\n\n  var len = string.length\n  var mustMatch = (arguments.length > 2 && arguments[2] === true)\n  if (!mustMatch && len === 0) return 0\n\n  // Use a for loop to avoid recursion\n  var loweredCase = false\n  for (;;) {\n    switch (encoding) {\n      case 'ascii':\n      case 'latin1':\n      case 'binary':\n        return len\n      case 'utf8':\n      case 'utf-8':\n        return utf8ToBytes(string).length\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return len * 2\n      case 'hex':\n        return len >>> 1\n      case 'base64':\n        return base64ToBytes(string).length\n      default:\n        if (loweredCase) {\n          return mustMatch ? -1 : utf8ToBytes(string).length // assume utf8\n        }\n        encoding = ('' + encoding).toLowerCase()\n        loweredCase = true\n    }\n  }\n}\nBuffer.byteLength = byteLength\n\nfunction slowToString (encoding, start, end) {\n  var loweredCase = false\n\n  // No need to verify that \"this.length <= MAX_UINT32\" since it's a read-only\n  // property of a typed array.\n\n  // This behaves neither like String nor Uint8Array in that we set start/end\n  // to their upper/lower bounds if the value passed is out of range.\n  // undefined is handled specially as per ECMA-262 6th Edition,\n  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.\n  if (start === undefined || start < 0) {\n    start = 0\n  }\n  // Return early if start > this.length. Done here to prevent potential uint32\n  // coercion fail below.\n  if (start > this.length) {\n    return ''\n  }\n\n  if (end === undefined || end > this.length) {\n    end = this.length\n  }\n\n  if (end <= 0) {\n    return ''\n  }\n\n  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.\n  end >>>= 0\n  start >>>= 0\n\n  if (end <= start) {\n    return ''\n  }\n\n  if (!encoding) encoding = 'utf8'\n\n  while (true) {\n    switch (encoding) {\n      case 'hex':\n        return hexSlice(this, start, end)\n\n      case 'utf8':\n      case 'utf-8':\n        return utf8Slice(this, start, end)\n\n      case 'ascii':\n        return asciiSlice(this, start, end)\n\n      case 'latin1':\n      case 'binary':\n        return latin1Slice(this, start, end)\n\n      case 'base64':\n        return base64Slice(this, start, end)\n\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return utf16leSlice(this, start, end)\n\n      default:\n        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)\n        encoding = (encoding + '').toLowerCase()\n        loweredCase = true\n    }\n  }\n}\n\n// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)\n// to detect a Buffer instance. It's not possible to use `instanceof Buffer`\n// reliably in a browserify context because there could be multiple different\n// copies of the 'buffer' package in use. This method works even for Buffer\n// instances that were created from another copy of the `buffer` package.\n// See: https://github.com/feross/buffer/issues/154\nBuffer.prototype._isBuffer = true\n\nfunction swap (b, n, m) {\n  var i = b[n]\n  b[n] = b[m]\n  b[m] = i\n}\n\nBuffer.prototype.swap16 = function swap16 () {\n  var len = this.length\n  if (len % 2 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 16-bits')\n  }\n  for (var i = 0; i < len; i += 2) {\n    swap(this, i, i + 1)\n  }\n  return this\n}\n\nBuffer.prototype.swap32 = function swap32 () {\n  var len = this.length\n  if (len % 4 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 32-bits')\n  }\n  for (var i = 0; i < len; i += 4) {\n    swap(this, i, i + 3)\n    swap(this, i + 1, i + 2)\n  }\n  return this\n}\n\nBuffer.prototype.swap64 = function swap64 () {\n  var len = this.length\n  if (len % 8 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 64-bits')\n  }\n  for (var i = 0; i < len; i += 8) {\n    swap(this, i, i + 7)\n    swap(this, i + 1, i + 6)\n    swap(this, i + 2, i + 5)\n    swap(this, i + 3, i + 4)\n  }\n  return this\n}\n\nBuffer.prototype.toString = function toString () {\n  var length = this.length\n  if (length === 0) return ''\n  if (arguments.length === 0) return utf8Slice(this, 0, length)\n  return slowToString.apply(this, arguments)\n}\n\nBuffer.prototype.toLocaleString = Buffer.prototype.toString\n\nBuffer.prototype.equals = function equals (b) {\n  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')\n  if (this === b) return true\n  return Buffer.compare(this, b) === 0\n}\n\nBuffer.prototype.inspect = function inspect () {\n  var str = ''\n  var max = exports.INSPECT_MAX_BYTES\n  str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim()\n  if (this.length > max) str += ' ... '\n  return '<Buffer ' + str + '>'\n}\n\nBuffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {\n  if (isInstance(target, Uint8Array)) {\n    target = Buffer.from(target, target.offset, target.byteLength)\n  }\n  if (!Buffer.isBuffer(target)) {\n    throw new TypeError(\n      'The \"target\" argument must be one of type Buffer or Uint8Array. ' +\n      'Received type ' + (typeof target)\n    )\n  }\n\n  if (start === undefined) {\n    start = 0\n  }\n  if (end === undefined) {\n    end = target ? target.length : 0\n  }\n  if (thisStart === undefined) {\n    thisStart = 0\n  }\n  if (thisEnd === undefined) {\n    thisEnd = this.length\n  }\n\n  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {\n    throw new RangeError('out of range index')\n  }\n\n  if (thisStart >= thisEnd && start >= end) {\n    return 0\n  }\n  if (thisStart >= thisEnd) {\n    return -1\n  }\n  if (start >= end) {\n    return 1\n  }\n\n  start >>>= 0\n  end >>>= 0\n  thisStart >>>= 0\n  thisEnd >>>= 0\n\n  if (this === target) return 0\n\n  var x = thisEnd - thisStart\n  var y = end - start\n  var len = Math.min(x, y)\n\n  var thisCopy = this.slice(thisStart, thisEnd)\n  var targetCopy = target.slice(start, end)\n\n  for (var i = 0; i < len; ++i) {\n    if (thisCopy[i] !== targetCopy[i]) {\n      x = thisCopy[i]\n      y = targetCopy[i]\n      break\n    }\n  }\n\n  if (x < y) return -1\n  if (y < x) return 1\n  return 0\n}\n\n// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,\n// OR the last index of `val` in `buffer` at offset <= `byteOffset`.\n//\n// Arguments:\n// - buffer - a Buffer to search\n// - val - a string, Buffer, or number\n// - byteOffset - an index into `buffer`; will be clamped to an int32\n// - encoding - an optional encoding, relevant is val is a string\n// - dir - true for indexOf, false for lastIndexOf\nfunction bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {\n  // Empty buffer means no match\n  if (buffer.length === 0) return -1\n\n  // Normalize byteOffset\n  if (typeof byteOffset === 'string') {\n    encoding = byteOffset\n    byteOffset = 0\n  } else if (byteOffset > 0x7fffffff) {\n    byteOffset = 0x7fffffff\n  } else if (byteOffset < -0x80000000) {\n    byteOffset = -0x80000000\n  }\n  byteOffset = +byteOffset // Coerce to Number.\n  if (numberIsNaN(byteOffset)) {\n    // byteOffset: it it's undefined, null, NaN, \"foo\", etc, search whole buffer\n    byteOffset = dir ? 0 : (buffer.length - 1)\n  }\n\n  // Normalize byteOffset: negative offsets start from the end of the buffer\n  if (byteOffset < 0) byteOffset = buffer.length + byteOffset\n  if (byteOffset >= buffer.length) {\n    if (dir) return -1\n    else byteOffset = buffer.length - 1\n  } else if (byteOffset < 0) {\n    if (dir) byteOffset = 0\n    else return -1\n  }\n\n  // Normalize val\n  if (typeof val === 'string') {\n    val = Buffer.from(val, encoding)\n  }\n\n  // Finally, search either indexOf (if dir is true) or lastIndexOf\n  if (Buffer.isBuffer(val)) {\n    // Special case: looking for empty string/buffer always fails\n    if (val.length === 0) {\n      return -1\n    }\n    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)\n  } else if (typeof val === 'number') {\n    val = val & 0xFF // Search for a byte value [0-255]\n    if (typeof Uint8Array.prototype.indexOf === 'function') {\n      if (dir) {\n        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)\n      } else {\n        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)\n      }\n    }\n    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)\n  }\n\n  throw new TypeError('val must be string, number or Buffer')\n}\n\nfunction arrayIndexOf (arr, val, byteOffset, encoding, dir) {\n  var indexSize = 1\n  var arrLength = arr.length\n  var valLength = val.length\n\n  if (encoding !== undefined) {\n    encoding = String(encoding).toLowerCase()\n    if (encoding === 'ucs2' || encoding === 'ucs-2' ||\n        encoding === 'utf16le' || encoding === 'utf-16le') {\n      if (arr.length < 2 || val.length < 2) {\n        return -1\n      }\n      indexSize = 2\n      arrLength /= 2\n      valLength /= 2\n      byteOffset /= 2\n    }\n  }\n\n  function read (buf, i) {\n    if (indexSize === 1) {\n      return buf[i]\n    } else {\n      return buf.readUInt16BE(i * indexSize)\n    }\n  }\n\n  var i\n  if (dir) {\n    var foundIndex = -1\n    for (i = byteOffset; i < arrLength; i++) {\n      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {\n        if (foundIndex === -1) foundIndex = i\n        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize\n      } else {\n        if (foundIndex !== -1) i -= i - foundIndex\n        foundIndex = -1\n      }\n    }\n  } else {\n    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength\n    for (i = byteOffset; i >= 0; i--) {\n      var found = true\n      for (var j = 0; j < valLength; j++) {\n        if (read(arr, i + j) !== read(val, j)) {\n          found = false\n          break\n        }\n      }\n      if (found) return i\n    }\n  }\n\n  return -1\n}\n\nBuffer.prototype.includes = function includes (val, byteOffset, encoding) {\n  return this.indexOf(val, byteOffset, encoding) !== -1\n}\n\nBuffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {\n  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)\n}\n\nBuffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {\n  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)\n}\n\nfunction hexWrite (buf, string, offset, length) {\n  offset = Number(offset) || 0\n  var remaining = buf.length - offset\n  if (!length) {\n    length = remaining\n  } else {\n    length = Number(length)\n    if (length > remaining) {\n      length = remaining\n    }\n  }\n\n  var strLen = string.length\n\n  if (length > strLen / 2) {\n    length = strLen / 2\n  }\n  for (var i = 0; i < length; ++i) {\n    var parsed = parseInt(string.substr(i * 2, 2), 16)\n    if (numberIsNaN(parsed)) return i\n    buf[offset + i] = parsed\n  }\n  return i\n}\n\nfunction utf8Write (buf, string, offset, length) {\n  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)\n}\n\nfunction asciiWrite (buf, string, offset, length) {\n  return blitBuffer(asciiToBytes(string), buf, offset, length)\n}\n\nfunction latin1Write (buf, string, offset, length) {\n  return asciiWrite(buf, string, offset, length)\n}\n\nfunction base64Write (buf, string, offset, length) {\n  return blitBuffer(base64ToBytes(string), buf, offset, length)\n}\n\nfunction ucs2Write (buf, string, offset, length) {\n  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)\n}\n\nBuffer.prototype.write = function write (string, offset, length, encoding) {\n  // Buffer#write(string)\n  if (offset === undefined) {\n    encoding = 'utf8'\n    length = this.length\n    offset = 0\n  // Buffer#write(string, encoding)\n  } else if (length === undefined && typeof offset === 'string') {\n    encoding = offset\n    length = this.length\n    offset = 0\n  // Buffer#write(string, offset[, length][, encoding])\n  } else if (isFinite(offset)) {\n    offset = offset >>> 0\n    if (isFinite(length)) {\n      length = length >>> 0\n      if (encoding === undefined) encoding = 'utf8'\n    } else {\n      encoding = length\n      length = undefined\n    }\n  } else {\n    throw new Error(\n      'Buffer.write(string, encoding, offset[, length]) is no longer supported'\n    )\n  }\n\n  var remaining = this.length - offset\n  if (length === undefined || length > remaining) length = remaining\n\n  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {\n    throw new RangeError('Attempt to write outside buffer bounds')\n  }\n\n  if (!encoding) encoding = 'utf8'\n\n  var loweredCase = false\n  for (;;) {\n    switch (encoding) {\n      case 'hex':\n        return hexWrite(this, string, offset, length)\n\n      case 'utf8':\n      case 'utf-8':\n        return utf8Write(this, string, offset, length)\n\n      case 'ascii':\n        return asciiWrite(this, string, offset, length)\n\n      case 'latin1':\n      case 'binary':\n        return latin1Write(this, string, offset, length)\n\n      case 'base64':\n        // Warning: maxLength not taken into account in base64Write\n        return base64Write(this, string, offset, length)\n\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return ucs2Write(this, string, offset, length)\n\n      default:\n        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)\n        encoding = ('' + encoding).toLowerCase()\n        loweredCase = true\n    }\n  }\n}\n\nBuffer.prototype.toJSON = function toJSON () {\n  return {\n    type: 'Buffer',\n    data: Array.prototype.slice.call(this._arr || this, 0)\n  }\n}\n\nfunction base64Slice (buf, start, end) {\n  if (start === 0 && end === buf.length) {\n    return base64.fromByteArray(buf)\n  } else {\n    return base64.fromByteArray(buf.slice(start, end))\n  }\n}\n\nfunction utf8Slice (buf, start, end) {\n  end = Math.min(buf.length, end)\n  var res = []\n\n  var i = start\n  while (i < end) {\n    var firstByte = buf[i]\n    var codePoint = null\n    var bytesPerSequence = (firstByte > 0xEF) ? 4\n      : (firstByte > 0xDF) ? 3\n        : (firstByte > 0xBF) ? 2\n          : 1\n\n    if (i + bytesPerSequence <= end) {\n      var secondByte, thirdByte, fourthByte, tempCodePoint\n\n      switch (bytesPerSequence) {\n        case 1:\n          if (firstByte < 0x80) {\n            codePoint = firstByte\n          }\n          break\n        case 2:\n          secondByte = buf[i + 1]\n          if ((secondByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)\n            if (tempCodePoint > 0x7F) {\n              codePoint = tempCodePoint\n            }\n          }\n          break\n        case 3:\n          secondByte = buf[i + 1]\n          thirdByte = buf[i + 2]\n          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)\n            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {\n              codePoint = tempCodePoint\n            }\n          }\n          break\n        case 4:\n          secondByte = buf[i + 1]\n          thirdByte = buf[i + 2]\n          fourthByte = buf[i + 3]\n          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)\n            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {\n              codePoint = tempCodePoint\n            }\n          }\n      }\n    }\n\n    if (codePoint === null) {\n      // we did not generate a valid codePoint so insert a\n      // replacement char (U+FFFD) and advance only 1 byte\n      codePoint = 0xFFFD\n      bytesPerSequence = 1\n    } else if (codePoint > 0xFFFF) {\n      // encode to utf16 (surrogate pair dance)\n      codePoint -= 0x10000\n      res.push(codePoint >>> 10 & 0x3FF | 0xD800)\n      codePoint = 0xDC00 | codePoint & 0x3FF\n    }\n\n    res.push(codePoint)\n    i += bytesPerSequence\n  }\n\n  return decodeCodePointsArray(res)\n}\n\n// Based on http://stackoverflow.com/a/22747272/680742, the browser with\n// the lowest limit is Chrome, with 0x10000 args.\n// We go 1 magnitude less, for safety\nvar MAX_ARGUMENTS_LENGTH = 0x1000\n\nfunction decodeCodePointsArray (codePoints) {\n  var len = codePoints.length\n  if (len <= MAX_ARGUMENTS_LENGTH) {\n    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()\n  }\n\n  // Decode in chunks to avoid \"call stack size exceeded\".\n  var res = ''\n  var i = 0\n  while (i < len) {\n    res += String.fromCharCode.apply(\n      String,\n      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)\n    )\n  }\n  return res\n}\n\nfunction asciiSlice (buf, start, end) {\n  var ret = ''\n  end = Math.min(buf.length, end)\n\n  for (var i = start; i < end; ++i) {\n    ret += String.fromCharCode(buf[i] & 0x7F)\n  }\n  return ret\n}\n\nfunction latin1Slice (buf, start, end) {\n  var ret = ''\n  end = Math.min(buf.length, end)\n\n  for (var i = start; i < end; ++i) {\n    ret += String.fromCharCode(buf[i])\n  }\n  return ret\n}\n\nfunction hexSlice (buf, start, end) {\n  var len = buf.length\n\n  if (!start || start < 0) start = 0\n  if (!end || end < 0 || end > len) end = len\n\n  var out = ''\n  for (var i = start; i < end; ++i) {\n    out += toHex(buf[i])\n  }\n  return out\n}\n\nfunction utf16leSlice (buf, start, end) {\n  var bytes = buf.slice(start, end)\n  var res = ''\n  for (var i = 0; i < bytes.length; i += 2) {\n    res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256))\n  }\n  return res\n}\n\nBuffer.prototype.slice = function slice (start, end) {\n  var len = this.length\n  start = ~~start\n  end = end === undefined ? len : ~~end\n\n  if (start < 0) {\n    start += len\n    if (start < 0) start = 0\n  } else if (start > len) {\n    start = len\n  }\n\n  if (end < 0) {\n    end += len\n    if (end < 0) end = 0\n  } else if (end > len) {\n    end = len\n  }\n\n  if (end < start) end = start\n\n  var newBuf = this.subarray(start, end)\n  // Return an augmented `Uint8Array` instance\n  newBuf.__proto__ = Buffer.prototype\n  return newBuf\n}\n\n/*\n * Need to make sure that buffer isn't trying to write out of bounds.\n */\nfunction checkOffset (offset, ext, length) {\n  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')\n  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')\n}\n\nBuffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {\n  offset = offset >>> 0\n  byteLength = byteLength >>> 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var val = this[offset]\n  var mul = 1\n  var i = 0\n  while (++i < byteLength && (mul *= 0x100)) {\n    val += this[offset + i] * mul\n  }\n\n  return val\n}\n\nBuffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {\n  offset = offset >>> 0\n  byteLength = byteLength >>> 0\n  if (!noAssert) {\n    checkOffset(offset, byteLength, this.length)\n  }\n\n  var val = this[offset + --byteLength]\n  var mul = 1\n  while (byteLength > 0 && (mul *= 0x100)) {\n    val += this[offset + --byteLength] * mul\n  }\n\n  return val\n}\n\nBuffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 1, this.length)\n  return this[offset]\n}\n\nBuffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  return this[offset] | (this[offset + 1] << 8)\n}\n\nBuffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  return (this[offset] << 8) | this[offset + 1]\n}\n\nBuffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return ((this[offset]) |\n      (this[offset + 1] << 8) |\n      (this[offset + 2] << 16)) +\n      (this[offset + 3] * 0x1000000)\n}\n\nBuffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset] * 0x1000000) +\n    ((this[offset + 1] << 16) |\n    (this[offset + 2] << 8) |\n    this[offset + 3])\n}\n\nBuffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {\n  offset = offset >>> 0\n  byteLength = byteLength >>> 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var val = this[offset]\n  var mul = 1\n  var i = 0\n  while (++i < byteLength && (mul *= 0x100)) {\n    val += this[offset + i] * mul\n  }\n  mul *= 0x80\n\n  if (val >= mul) val -= Math.pow(2, 8 * byteLength)\n\n  return val\n}\n\nBuffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {\n  offset = offset >>> 0\n  byteLength = byteLength >>> 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var i = byteLength\n  var mul = 1\n  var val = this[offset + --i]\n  while (i > 0 && (mul *= 0x100)) {\n    val += this[offset + --i] * mul\n  }\n  mul *= 0x80\n\n  if (val >= mul) val -= Math.pow(2, 8 * byteLength)\n\n  return val\n}\n\nBuffer.prototype.readInt8 = function readInt8 (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 1, this.length)\n  if (!(this[offset] & 0x80)) return (this[offset])\n  return ((0xff - this[offset] + 1) * -1)\n}\n\nBuffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  var val = this[offset] | (this[offset + 1] << 8)\n  return (val & 0x8000) ? val | 0xFFFF0000 : val\n}\n\nBuffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  var val = this[offset + 1] | (this[offset] << 8)\n  return (val & 0x8000) ? val | 0xFFFF0000 : val\n}\n\nBuffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset]) |\n    (this[offset + 1] << 8) |\n    (this[offset + 2] << 16) |\n    (this[offset + 3] << 24)\n}\n\nBuffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset] << 24) |\n    (this[offset + 1] << 16) |\n    (this[offset + 2] << 8) |\n    (this[offset + 3])\n}\n\nBuffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 4, this.length)\n  return ieee754.read(this, offset, true, 23, 4)\n}\n\nBuffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 4, this.length)\n  return ieee754.read(this, offset, false, 23, 4)\n}\n\nBuffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 8, this.length)\n  return ieee754.read(this, offset, true, 52, 8)\n}\n\nBuffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 8, this.length)\n  return ieee754.read(this, offset, false, 52, 8)\n}\n\nfunction checkInt (buf, value, offset, ext, max, min) {\n  if (!Buffer.isBuffer(buf)) throw new TypeError('\"buffer\" argument must be a Buffer instance')\n  if (value > max || value < min) throw new RangeError('\"value\" argument is out of bounds')\n  if (offset + ext > buf.length) throw new RangeError('Index out of range')\n}\n\nBuffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  byteLength = byteLength >>> 0\n  if (!noAssert) {\n    var maxBytes = Math.pow(2, 8 * byteLength) - 1\n    checkInt(this, value, offset, byteLength, maxBytes, 0)\n  }\n\n  var mul = 1\n  var i = 0\n  this[offset] = value & 0xFF\n  while (++i < byteLength && (mul *= 0x100)) {\n    this[offset + i] = (value / mul) & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  byteLength = byteLength >>> 0\n  if (!noAssert) {\n    var maxBytes = Math.pow(2, 8 * byteLength) - 1\n    checkInt(this, value, offset, byteLength, maxBytes, 0)\n  }\n\n  var i = byteLength - 1\n  var mul = 1\n  this[offset + i] = value & 0xFF\n  while (--i >= 0 && (mul *= 0x100)) {\n    this[offset + i] = (value / mul) & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)\n  this[offset] = (value & 0xff)\n  return offset + 1\n}\n\nBuffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)\n  this[offset] = (value & 0xff)\n  this[offset + 1] = (value >>> 8)\n  return offset + 2\n}\n\nBuffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)\n  this[offset] = (value >>> 8)\n  this[offset + 1] = (value & 0xff)\n  return offset + 2\n}\n\nBuffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)\n  this[offset + 3] = (value >>> 24)\n  this[offset + 2] = (value >>> 16)\n  this[offset + 1] = (value >>> 8)\n  this[offset] = (value & 0xff)\n  return offset + 4\n}\n\nBuffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)\n  this[offset] = (value >>> 24)\n  this[offset + 1] = (value >>> 16)\n  this[offset + 2] = (value >>> 8)\n  this[offset + 3] = (value & 0xff)\n  return offset + 4\n}\n\nBuffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) {\n    var limit = Math.pow(2, (8 * byteLength) - 1)\n\n    checkInt(this, value, offset, byteLength, limit - 1, -limit)\n  }\n\n  var i = 0\n  var mul = 1\n  var sub = 0\n  this[offset] = value & 0xFF\n  while (++i < byteLength && (mul *= 0x100)) {\n    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {\n      sub = 1\n    }\n    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) {\n    var limit = Math.pow(2, (8 * byteLength) - 1)\n\n    checkInt(this, value, offset, byteLength, limit - 1, -limit)\n  }\n\n  var i = byteLength - 1\n  var mul = 1\n  var sub = 0\n  this[offset + i] = value & 0xFF\n  while (--i >= 0 && (mul *= 0x100)) {\n    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {\n      sub = 1\n    }\n    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)\n  if (value < 0) value = 0xff + value + 1\n  this[offset] = (value & 0xff)\n  return offset + 1\n}\n\nBuffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)\n  this[offset] = (value & 0xff)\n  this[offset + 1] = (value >>> 8)\n  return offset + 2\n}\n\nBuffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)\n  this[offset] = (value >>> 8)\n  this[offset + 1] = (value & 0xff)\n  return offset + 2\n}\n\nBuffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)\n  this[offset] = (value & 0xff)\n  this[offset + 1] = (value >>> 8)\n  this[offset + 2] = (value >>> 16)\n  this[offset + 3] = (value >>> 24)\n  return offset + 4\n}\n\nBuffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)\n  if (value < 0) value = 0xffffffff + value + 1\n  this[offset] = (value >>> 24)\n  this[offset + 1] = (value >>> 16)\n  this[offset + 2] = (value >>> 8)\n  this[offset + 3] = (value & 0xff)\n  return offset + 4\n}\n\nfunction checkIEEE754 (buf, value, offset, ext, max, min) {\n  if (offset + ext > buf.length) throw new RangeError('Index out of range')\n  if (offset < 0) throw new RangeError('Index out of range')\n}\n\nfunction writeFloat (buf, value, offset, littleEndian, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) {\n    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)\n  }\n  ieee754.write(buf, value, offset, littleEndian, 23, 4)\n  return offset + 4\n}\n\nBuffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {\n  return writeFloat(this, value, offset, true, noAssert)\n}\n\nBuffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {\n  return writeFloat(this, value, offset, false, noAssert)\n}\n\nfunction writeDouble (buf, value, offset, littleEndian, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) {\n    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)\n  }\n  ieee754.write(buf, value, offset, littleEndian, 52, 8)\n  return offset + 8\n}\n\nBuffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {\n  return writeDouble(this, value, offset, true, noAssert)\n}\n\nBuffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {\n  return writeDouble(this, value, offset, false, noAssert)\n}\n\n// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)\nBuffer.prototype.copy = function copy (target, targetStart, start, end) {\n  if (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer')\n  if (!start) start = 0\n  if (!end && end !== 0) end = this.length\n  if (targetStart >= target.length) targetStart = target.length\n  if (!targetStart) targetStart = 0\n  if (end > 0 && end < start) end = start\n\n  // Copy 0 bytes; we're done\n  if (end === start) return 0\n  if (target.length === 0 || this.length === 0) return 0\n\n  // Fatal error conditions\n  if (targetStart < 0) {\n    throw new RangeError('targetStart out of bounds')\n  }\n  if (start < 0 || start >= this.length) throw new RangeError('Index out of range')\n  if (end < 0) throw new RangeError('sourceEnd out of bounds')\n\n  // Are we oob?\n  if (end > this.length) end = this.length\n  if (target.length - targetStart < end - start) {\n    end = target.length - targetStart + start\n  }\n\n  var len = end - start\n\n  if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') {\n    // Use built-in when available, missing from IE11\n    this.copyWithin(targetStart, start, end)\n  } else if (this === target && start < targetStart && targetStart < end) {\n    // descending copy from end\n    for (var i = len - 1; i >= 0; --i) {\n      target[i + targetStart] = this[i + start]\n    }\n  } else {\n    Uint8Array.prototype.set.call(\n      target,\n      this.subarray(start, end),\n      targetStart\n    )\n  }\n\n  return len\n}\n\n// Usage:\n//    buffer.fill(number[, offset[, end]])\n//    buffer.fill(buffer[, offset[, end]])\n//    buffer.fill(string[, offset[, end]][, encoding])\nBuffer.prototype.fill = function fill (val, start, end, encoding) {\n  // Handle string cases:\n  if (typeof val === 'string') {\n    if (typeof start === 'string') {\n      encoding = start\n      start = 0\n      end = this.length\n    } else if (typeof end === 'string') {\n      encoding = end\n      end = this.length\n    }\n    if (encoding !== undefined && typeof encoding !== 'string') {\n      throw new TypeError('encoding must be a string')\n    }\n    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {\n      throw new TypeError('Unknown encoding: ' + encoding)\n    }\n    if (val.length === 1) {\n      var code = val.charCodeAt(0)\n      if ((encoding === 'utf8' && code < 128) ||\n          encoding === 'latin1') {\n        // Fast path: If `val` fits into a single byte, use that numeric value.\n        val = code\n      }\n    }\n  } else if (typeof val === 'number') {\n    val = val & 255\n  }\n\n  // Invalid ranges are not set to a default, so can range check early.\n  if (start < 0 || this.length < start || this.length < end) {\n    throw new RangeError('Out of range index')\n  }\n\n  if (end <= start) {\n    return this\n  }\n\n  start = start >>> 0\n  end = end === undefined ? this.length : end >>> 0\n\n  if (!val) val = 0\n\n  var i\n  if (typeof val === 'number') {\n    for (i = start; i < end; ++i) {\n      this[i] = val\n    }\n  } else {\n    var bytes = Buffer.isBuffer(val)\n      ? val\n      : Buffer.from(val, encoding)\n    var len = bytes.length\n    if (len === 0) {\n      throw new TypeError('The value \"' + val +\n        '\" is invalid for argument \"value\"')\n    }\n    for (i = 0; i < end - start; ++i) {\n      this[i + start] = bytes[i % len]\n    }\n  }\n\n  return this\n}\n\n// HELPER FUNCTIONS\n// ================\n\nvar INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g\n\nfunction base64clean (str) {\n  // Node takes equal signs as end of the Base64 encoding\n  str = str.split('=')[0]\n  // Node strips out invalid characters like \\n and \\t from the string, base64-js does not\n  str = str.trim().replace(INVALID_BASE64_RE, '')\n  // Node converts strings with length < 2 to ''\n  if (str.length < 2) return ''\n  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not\n  while (str.length % 4 !== 0) {\n    str = str + '='\n  }\n  return str\n}\n\nfunction toHex (n) {\n  if (n < 16) return '0' + n.toString(16)\n  return n.toString(16)\n}\n\nfunction utf8ToBytes (string, units) {\n  units = units || Infinity\n  var codePoint\n  var length = string.length\n  var leadSurrogate = null\n  var bytes = []\n\n  for (var i = 0; i < length; ++i) {\n    codePoint = string.charCodeAt(i)\n\n    // is surrogate component\n    if (codePoint > 0xD7FF && codePoint < 0xE000) {\n      // last char was a lead\n      if (!leadSurrogate) {\n        // no lead yet\n        if (codePoint > 0xDBFF) {\n          // unexpected trail\n          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n          continue\n        } else if (i + 1 === length) {\n          // unpaired lead\n          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n          continue\n        }\n\n        // valid lead\n        leadSurrogate = codePoint\n\n        continue\n      }\n\n      // 2 leads in a row\n      if (codePoint < 0xDC00) {\n        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n        leadSurrogate = codePoint\n        continue\n      }\n\n      // valid surrogate pair\n      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000\n    } else if (leadSurrogate) {\n      // valid bmp char, but last char was a lead\n      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n    }\n\n    leadSurrogate = null\n\n    // encode utf8\n    if (codePoint < 0x80) {\n      if ((units -= 1) < 0) break\n      bytes.push(codePoint)\n    } else if (codePoint < 0x800) {\n      if ((units -= 2) < 0) break\n      bytes.push(\n        codePoint >> 0x6 | 0xC0,\n        codePoint & 0x3F | 0x80\n      )\n    } else if (codePoint < 0x10000) {\n      if ((units -= 3) < 0) break\n      bytes.push(\n        codePoint >> 0xC | 0xE0,\n        codePoint >> 0x6 & 0x3F | 0x80,\n        codePoint & 0x3F | 0x80\n      )\n    } else if (codePoint < 0x110000) {\n      if ((units -= 4) < 0) break\n      bytes.push(\n        codePoint >> 0x12 | 0xF0,\n        codePoint >> 0xC & 0x3F | 0x80,\n        codePoint >> 0x6 & 0x3F | 0x80,\n        codePoint & 0x3F | 0x80\n      )\n    } else {\n      throw new Error('Invalid code point')\n    }\n  }\n\n  return bytes\n}\n\nfunction asciiToBytes (str) {\n  var byteArray = []\n  for (var i = 0; i < str.length; ++i) {\n    // Node's code seems to be doing this and not & 0x7F..\n    byteArray.push(str.charCodeAt(i) & 0xFF)\n  }\n  return byteArray\n}\n\nfunction utf16leToBytes (str, units) {\n  var c, hi, lo\n  var byteArray = []\n  for (var i = 0; i < str.length; ++i) {\n    if ((units -= 2) < 0) break\n\n    c = str.charCodeAt(i)\n    hi = c >> 8\n    lo = c % 256\n    byteArray.push(lo)\n    byteArray.push(hi)\n  }\n\n  return byteArray\n}\n\nfunction base64ToBytes (str) {\n  return base64.toByteArray(base64clean(str))\n}\n\nfunction blitBuffer (src, dst, offset, length) {\n  for (var i = 0; i < length; ++i) {\n    if ((i + offset >= dst.length) || (i >= src.length)) break\n    dst[i + offset] = src[i]\n  }\n  return i\n}\n\n// ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass\n// the `instanceof` check but they should be treated as of that type.\n// See: https://github.com/feross/buffer/issues/166\nfunction isInstance (obj, type) {\n  return obj instanceof type ||\n    (obj != null && obj.constructor != null && obj.constructor.name != null &&\n      obj.constructor.name === type.name)\n}\nfunction numberIsNaN (obj) {\n  // For IE11 support\n  return obj !== obj // eslint-disable-line no-self-compare\n}\n","'use strict';\n\nvar GetIntrinsic = require('get-intrinsic');\n\nvar callBind = require('./');\n\nvar $indexOf = callBind(GetIntrinsic('String.prototype.indexOf'));\n\nmodule.exports = function callBoundIntrinsic(name, allowMissing) {\n\tvar intrinsic = GetIntrinsic(name, !!allowMissing);\n\tif (typeof intrinsic === 'function' && $indexOf(name, '.prototype.') > -1) {\n\t\treturn callBind(intrinsic);\n\t}\n\treturn intrinsic;\n};\n","'use strict';\n\nvar bind = require('function-bind');\nvar GetIntrinsic = require('get-intrinsic');\n\nvar $apply = GetIntrinsic('%Function.prototype.apply%');\nvar $call = GetIntrinsic('%Function.prototype.call%');\nvar $reflectApply = GetIntrinsic('%Reflect.apply%', true) || bind.call($call, $apply);\n\nvar $gOPD = GetIntrinsic('%Object.getOwnPropertyDescriptor%', true);\nvar $defineProperty = GetIntrinsic('%Object.defineProperty%', true);\nvar $max = GetIntrinsic('%Math.max%');\n\nif ($defineProperty) {\n\ttry {\n\t\t$defineProperty({}, 'a', { value: 1 });\n\t} catch (e) {\n\t\t// IE 8 has a broken defineProperty\n\t\t$defineProperty = null;\n\t}\n}\n\nmodule.exports = function callBind(originalFunction) {\n\tvar func = $reflectApply(bind, $call, arguments);\n\tif ($gOPD && $defineProperty) {\n\t\tvar desc = $gOPD(func, 'length');\n\t\tif (desc.configurable) {\n\t\t\t// original length, plus the receiver, minus any additional arguments (after the receiver)\n\t\t\t$defineProperty(\n\t\t\t\tfunc,\n\t\t\t\t'length',\n\t\t\t\t{ value: 1 + $max(0, originalFunction.length - (arguments.length - 1)) }\n\t\t\t);\n\t\t}\n\t}\n\treturn func;\n};\n\nvar applyBind = function applyBind() {\n\treturn $reflectApply(bind, $apply, arguments);\n};\n\nif ($defineProperty) {\n\t$defineProperty(module.exports, 'apply', { value: applyBind });\n} else {\n\tmodule.exports.apply = applyBind;\n}\n","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n// NOTE: These type checking functions intentionally don't use `instanceof`\n// because it is fragile and can be easily faked with `Object.create()`.\n\nfunction isArray(arg) {\n  if (Array.isArray) {\n    return Array.isArray(arg);\n  }\n  return objectToString(arg) === '[object Array]';\n}\nexports.isArray = isArray;\n\nfunction isBoolean(arg) {\n  return typeof arg === 'boolean';\n}\nexports.isBoolean = isBoolean;\n\nfunction isNull(arg) {\n  return arg === null;\n}\nexports.isNull = isNull;\n\nfunction isNullOrUndefined(arg) {\n  return arg == null;\n}\nexports.isNullOrUndefined = isNullOrUndefined;\n\nfunction isNumber(arg) {\n  return typeof arg === 'number';\n}\nexports.isNumber = isNumber;\n\nfunction isString(arg) {\n  return typeof arg === 'string';\n}\nexports.isString = isString;\n\nfunction isSymbol(arg) {\n  return typeof arg === 'symbol';\n}\nexports.isSymbol = isSymbol;\n\nfunction isUndefined(arg) {\n  return arg === void 0;\n}\nexports.isUndefined = isUndefined;\n\nfunction isRegExp(re) {\n  return objectToString(re) === '[object RegExp]';\n}\nexports.isRegExp = isRegExp;\n\nfunction isObject(arg) {\n  return typeof arg === 'object' && arg !== null;\n}\nexports.isObject = isObject;\n\nfunction isDate(d) {\n  return objectToString(d) === '[object Date]';\n}\nexports.isDate = isDate;\n\nfunction isError(e) {\n  return (objectToString(e) === '[object Error]' || e instanceof Error);\n}\nexports.isError = isError;\n\nfunction isFunction(arg) {\n  return typeof arg === 'function';\n}\nexports.isFunction = isFunction;\n\nfunction isPrimitive(arg) {\n  return arg === null ||\n         typeof arg === 'boolean' ||\n         typeof arg === 'number' ||\n         typeof arg === 'string' ||\n         typeof arg === 'symbol' ||  // ES6 symbol\n         typeof arg === 'undefined';\n}\nexports.isPrimitive = isPrimitive;\n\nexports.isBuffer = require('buffer').Buffer.isBuffer;\n\nfunction objectToString(o) {\n  return Object.prototype.toString.call(o);\n}\n","'use strict';\n\nvar objectKeys = require('object-keys');\nvar isArguments = require('is-arguments');\nvar is = require('object-is');\nvar isRegex = require('is-regex');\nvar flags = require('regexp.prototype.flags');\nvar isArray = require('isarray');\nvar isDate = require('is-date-object');\nvar whichBoxedPrimitive = require('which-boxed-primitive');\nvar GetIntrinsic = require('get-intrinsic');\nvar callBound = require('call-bind/callBound');\nvar whichCollection = require('which-collection');\nvar getIterator = require('es-get-iterator');\nvar getSideChannel = require('side-channel');\nvar whichTypedArray = require('which-typed-array');\nvar assign = require('object.assign');\n\nvar $getTime = callBound('Date.prototype.getTime');\nvar gPO = Object.getPrototypeOf;\nvar $objToString = callBound('Object.prototype.toString');\n\nvar $Set = GetIntrinsic('%Set%', true);\nvar $mapHas = callBound('Map.prototype.has', true);\nvar $mapGet = callBound('Map.prototype.get', true);\nvar $mapSize = callBound('Map.prototype.size', true);\nvar $setAdd = callBound('Set.prototype.add', true);\nvar $setDelete = callBound('Set.prototype.delete', true);\nvar $setHas = callBound('Set.prototype.has', true);\nvar $setSize = callBound('Set.prototype.size', true);\n\n// taken from https://github.com/browserify/commonjs-assert/blob/bba838e9ba9e28edf3127ce6974624208502f6bc/internal/util/comparisons.js#L401-L414\nfunction setHasEqualElement(set, val1, opts, channel) {\n  var i = getIterator(set);\n  var result;\n  while ((result = i.next()) && !result.done) {\n    if (internalDeepEqual(val1, result.value, opts, channel)) { // eslint-disable-line no-use-before-define\n      // Remove the matching element to make sure we do not check that again.\n      $setDelete(set, result.value);\n      return true;\n    }\n  }\n\n  return false;\n}\n\n// taken from https://github.com/browserify/commonjs-assert/blob/bba838e9ba9e28edf3127ce6974624208502f6bc/internal/util/comparisons.js#L416-L439\nfunction findLooseMatchingPrimitives(prim) {\n  if (typeof prim === 'undefined') {\n    return null;\n  }\n  if (typeof prim === 'object') { // Only pass in null as object!\n    return void 0;\n  }\n  if (typeof prim === 'symbol') {\n    return false;\n  }\n  if (typeof prim === 'string' || typeof prim === 'number') {\n    // Loose equal entries exist only if the string is possible to convert to a regular number and not NaN.\n    return +prim === +prim; // eslint-disable-line no-implicit-coercion\n  }\n  return true;\n}\n\n// taken from https://github.com/browserify/commonjs-assert/blob/bba838e9ba9e28edf3127ce6974624208502f6bc/internal/util/comparisons.js#L449-L460\nfunction mapMightHaveLoosePrim(a, b, prim, item, opts, channel) {\n  var altValue = findLooseMatchingPrimitives(prim);\n  if (altValue != null) {\n    return altValue;\n  }\n  var curB = $mapGet(b, altValue);\n  var looseOpts = assign({}, opts, { strict: false });\n  if (\n    (typeof curB === 'undefined' && !$mapHas(b, altValue))\n    // eslint-disable-next-line no-use-before-define\n    || !internalDeepEqual(item, curB, looseOpts, channel)\n  ) {\n    return false;\n  }\n  // eslint-disable-next-line no-use-before-define\n  return !$mapHas(a, altValue) && internalDeepEqual(item, curB, looseOpts, channel);\n}\n\n// taken from https://github.com/browserify/commonjs-assert/blob/bba838e9ba9e28edf3127ce6974624208502f6bc/internal/util/comparisons.js#L441-L447\nfunction setMightHaveLoosePrim(a, b, prim) {\n  var altValue = findLooseMatchingPrimitives(prim);\n  if (altValue != null) {\n    return altValue;\n  }\n\n  return $setHas(b, altValue) && !$setHas(a, altValue);\n}\n\n// taken from https://github.com/browserify/commonjs-assert/blob/bba838e9ba9e28edf3127ce6974624208502f6bc/internal/util/comparisons.js#L518-L533\nfunction mapHasEqualEntry(set, map, key1, item1, opts, channel) {\n  var i = getIterator(set);\n  var result;\n  var key2;\n  while ((result = i.next()) && !result.done) {\n    key2 = result.value;\n    if (\n      // eslint-disable-next-line no-use-before-define\n      internalDeepEqual(key1, key2, opts, channel)\n      // eslint-disable-next-line no-use-before-define\n      && internalDeepEqual(item1, $mapGet(map, key2), opts, channel)\n    ) {\n      $setDelete(set, key2);\n      return true;\n    }\n  }\n\n  return false;\n}\n\nfunction internalDeepEqual(actual, expected, options, channel) {\n  var opts = options || {};\n\n  // 7.1. All identical values are equivalent, as determined by ===.\n  if (opts.strict ? is(actual, expected) : actual === expected) {\n    return true;\n  }\n\n  var actualBoxed = whichBoxedPrimitive(actual);\n  var expectedBoxed = whichBoxedPrimitive(expected);\n  if (actualBoxed !== expectedBoxed) {\n    return false;\n  }\n\n  // 7.3. Other pairs that do not both pass typeof value == 'object', equivalence is determined by ==.\n  if (!actual || !expected || (typeof actual !== 'object' && typeof expected !== 'object')) {\n    return opts.strict ? is(actual, expected) : actual == expected; // eslint-disable-line eqeqeq\n  }\n\n  /*\n   * 7.4. For all other Object pairs, including Array objects, equivalence is\n   * determined by having the same number of owned properties (as verified\n   * with Object.prototype.hasOwnProperty.call), the same set of keys\n   * (although not necessarily the same order), equivalent values for every\n   * corresponding key, and an identical 'prototype' property. Note: this\n   * accounts for both named and indexed properties on Arrays.\n   */\n  // see https://github.com/nodejs/node/commit/d3aafd02efd3a403d646a3044adcf14e63a88d32 for memos/channel inspiration\n\n  var hasActual = channel.has(actual);\n  var hasExpected = channel.has(expected);\n  var sentinel;\n  if (hasActual && hasExpected) {\n    if (channel.get(actual) === channel.get(expected)) {\n      return true;\n    }\n  } else {\n    sentinel = {};\n  }\n  if (!hasActual) { channel.set(actual, sentinel); }\n  if (!hasExpected) { channel.set(expected, sentinel); }\n\n  // eslint-disable-next-line no-use-before-define\n  return objEquiv(actual, expected, opts, channel);\n}\n\nfunction isBuffer(x) {\n  if (!x || typeof x !== 'object' || typeof x.length !== 'number') {\n    return false;\n  }\n  if (typeof x.copy !== 'function' || typeof x.slice !== 'function') {\n    return false;\n  }\n  if (x.length > 0 && typeof x[0] !== 'number') {\n    return false;\n  }\n\n  return !!(x.constructor && x.constructor.isBuffer && x.constructor.isBuffer(x));\n}\n\nfunction setEquiv(a, b, opts, channel) {\n  if ($setSize(a) !== $setSize(b)) {\n    return false;\n  }\n  var iA = getIterator(a);\n  var iB = getIterator(b);\n  var resultA;\n  var resultB;\n  var set;\n  while ((resultA = iA.next()) && !resultA.done) {\n    if (resultA.value && typeof resultA.value === 'object') {\n      if (!set) { set = new $Set(); }\n      $setAdd(set, resultA.value);\n    } else if (!$setHas(b, resultA.value)) {\n      if (opts.strict) { return false; }\n      if (!setMightHaveLoosePrim(a, b, resultA.value)) {\n        return false;\n      }\n      if (!set) { set = new $Set(); }\n      $setAdd(set, resultA.value);\n    }\n  }\n  if (set) {\n    while ((resultB = iB.next()) && !resultB.done) {\n      // We have to check if a primitive value is already matching and only if it's not, go hunting for it.\n      if (resultB.value && typeof resultB.value === 'object') {\n        if (!setHasEqualElement(set, resultB.value, opts.strict, channel)) {\n          return false;\n        }\n      } else if (\n        !opts.strict\n        && !$setHas(a, resultB.value)\n        && !setHasEqualElement(set, resultB.value, opts.strict, channel)\n      ) {\n        return false;\n      }\n    }\n    return $setSize(set) === 0;\n  }\n  return true;\n}\n\nfunction mapEquiv(a, b, opts, channel) {\n  if ($mapSize(a) !== $mapSize(b)) {\n    return false;\n  }\n  var iA = getIterator(a);\n  var iB = getIterator(b);\n  var resultA;\n  var resultB;\n  var set;\n  var key;\n  var item1;\n  var item2;\n  while ((resultA = iA.next()) && !resultA.done) {\n    key = resultA.value[0];\n    item1 = resultA.value[1];\n    if (key && typeof key === 'object') {\n      if (!set) { set = new $Set(); }\n      $setAdd(set, key);\n    } else {\n      item2 = $mapGet(b, key);\n      if ((typeof item2 === 'undefined' && !$mapHas(b, key)) || !internalDeepEqual(item1, item2, opts, channel)) {\n        if (opts.strict) {\n          return false;\n        }\n        if (!mapMightHaveLoosePrim(a, b, key, item1, opts, channel)) {\n          return false;\n        }\n        if (!set) { set = new $Set(); }\n        $setAdd(set, key);\n      }\n    }\n  }\n\n  if (set) {\n    while ((resultB = iB.next()) && !resultB.done) {\n      key = resultB.value[0];\n      item2 = resultB.value[1];\n      if (key && typeof key === 'object') {\n        if (!mapHasEqualEntry(set, a, key, item2, opts, channel)) {\n          return false;\n        }\n      } else if (\n        !opts.strict\n        && (!a.has(key) || !internalDeepEqual($mapGet(a, key), item2, opts, channel))\n        && !mapHasEqualEntry(set, a, key, item2, assign({}, opts, { strict: false }), channel)\n      ) {\n        return false;\n      }\n    }\n    return $setSize(set) === 0;\n  }\n  return true;\n}\n\nfunction objEquiv(a, b, opts, channel) {\n  /* eslint max-statements: [2, 100], max-lines-per-function: [2, 120], max-depth: [2, 5] */\n  var i, key;\n\n  if (typeof a !== typeof b) { return false; }\n  if (a == null || b == null) { return false; }\n\n  if ($objToString(a) !== $objToString(b)) { return false; }\n\n  if (isArguments(a) !== isArguments(b)) { return false; }\n\n  var aIsArray = isArray(a);\n  var bIsArray = isArray(b);\n  if (aIsArray !== bIsArray) { return false; }\n\n  // TODO: replace when a cross-realm brand check is available\n  var aIsError = a instanceof Error;\n  var bIsError = b instanceof Error;\n  if (aIsError !== bIsError) { return false; }\n  if (aIsError || bIsError) {\n    if (a.name !== b.name || a.message !== b.message) { return false; }\n  }\n\n  var aIsRegex = isRegex(a);\n  var bIsRegex = isRegex(b);\n  if (aIsRegex !== bIsRegex) { return false; }\n  if ((aIsRegex || bIsRegex) && (a.source !== b.source || flags(a) !== flags(b))) {\n    return false;\n  }\n\n  var aIsDate = isDate(a);\n  var bIsDate = isDate(b);\n  if (aIsDate !== bIsDate) { return false; }\n  if (aIsDate || bIsDate) { // && would work too, because both are true or both false here\n    if ($getTime(a) !== $getTime(b)) { return false; }\n  }\n  if (opts.strict && gPO && gPO(a) !== gPO(b)) { return false; }\n\n  if (whichTypedArray(a) !== whichTypedArray(b)) {\n    return false;\n  }\n\n  var aIsBuffer = isBuffer(a);\n  var bIsBuffer = isBuffer(b);\n  if (aIsBuffer !== bIsBuffer) { return false; }\n  if (aIsBuffer || bIsBuffer) { // && would work too, because both are true or both false here\n    if (a.length !== b.length) { return false; }\n    for (i = 0; i < a.length; i++) {\n      if (a[i] !== b[i]) { return false; }\n    }\n    return true;\n  }\n\n  if (typeof a !== typeof b) { return false; }\n\n  var ka = objectKeys(a);\n  var kb = objectKeys(b);\n  // having the same number of owned properties (keys incorporates hasOwnProperty)\n  if (ka.length !== kb.length) { return false; }\n\n  // the same set of keys (although not necessarily the same order),\n  ka.sort();\n  kb.sort();\n  // ~~~cheap key test\n  for (i = ka.length - 1; i >= 0; i--) {\n    if (ka[i] != kb[i]) { return false; } // eslint-disable-line eqeqeq\n  }\n\n  // equivalent values for every corresponding key, and ~~~possibly expensive deep test\n  for (i = ka.length - 1; i >= 0; i--) {\n    key = ka[i];\n    if (!internalDeepEqual(a[key], b[key], opts, channel)) { return false; }\n  }\n\n  var aCollection = whichCollection(a);\n  var bCollection = whichCollection(b);\n  if (aCollection !== bCollection) {\n    return false;\n  }\n  if (aCollection === 'Set' || bCollection === 'Set') { // aCollection === bCollection\n    return setEquiv(a, b, opts, channel);\n  }\n  if (aCollection === 'Map') { // aCollection === bCollection\n    return mapEquiv(a, b, opts, channel);\n  }\n\n  return true;\n}\n\nmodule.exports = function deepEqual(a, b, opts) {\n  return internalDeepEqual(a, b, opts, getSideChannel());\n};\n","var toString = {}.toString;\n\nmodule.exports = Array.isArray || function (arr) {\n  return toString.call(arr) == '[object Array]';\n};\n","'use strict';\n\nvar keys = require('object-keys');\nvar hasSymbols = typeof Symbol === 'function' && typeof Symbol('foo') === 'symbol';\n\nvar toStr = Object.prototype.toString;\nvar concat = Array.prototype.concat;\nvar origDefineProperty = Object.defineProperty;\n\nvar isFunction = function (fn) {\n\treturn typeof fn === 'function' && toStr.call(fn) === '[object Function]';\n};\n\nvar hasPropertyDescriptors = require('has-property-descriptors')();\n\nvar supportsDescriptors = origDefineProperty && hasPropertyDescriptors;\n\nvar defineProperty = function (object, name, value, predicate) {\n\tif (name in object && (!isFunction(predicate) || !predicate())) {\n\t\treturn;\n\t}\n\tif (supportsDescriptors) {\n\t\torigDefineProperty(object, name, {\n\t\t\tconfigurable: true,\n\t\t\tenumerable: false,\n\t\t\tvalue: value,\n\t\t\twritable: true\n\t\t});\n\t} else {\n\t\tobject[name] = value; // eslint-disable-line no-param-reassign\n\t}\n};\n\nvar defineProperties = function (object, map) {\n\tvar predicates = arguments.length > 2 ? arguments[2] : {};\n\tvar props = keys(map);\n\tif (hasSymbols) {\n\t\tprops = concat.call(props, Object.getOwnPropertySymbols(map));\n\t}\n\tfor (var i = 0; i < props.length; i += 1) {\n\t\tdefineProperty(object, props[i], map[props[i]], predicates[props[i]]);\n\t}\n};\n\ndefineProperties.supportsDescriptors = !!supportsDescriptors;\n\nmodule.exports = defineProperties;\n","module.exports = function () {\n    for (var i = 0; i < arguments.length; i++) {\n        if (arguments[i] !== undefined) return arguments[i];\n    }\n};\n","'use strict';\n\n// http://262.ecma-international.org/5.1/#sec-9.11\n\nmodule.exports = require('is-callable');\n","'use strict';\n\nmodule.exports = require('../5/CheckObjectCoercible');\n","'use strict';\n\nvar GetIntrinsic = require('get-intrinsic');\n\nvar $TypeError = GetIntrinsic('%TypeError%');\nvar $Number = GetIntrinsic('%Number%');\nvar $RegExp = GetIntrinsic('%RegExp%');\nvar $parseInteger = GetIntrinsic('%parseInt%');\n\nvar callBound = require('call-bind/callBound');\nvar regexTester = require('../helpers/regexTester');\nvar isPrimitive = require('../helpers/isPrimitive');\n\nvar $strSlice = callBound('String.prototype.slice');\nvar isBinary = regexTester(/^0b[01]+$/i);\nvar isOctal = regexTester(/^0o[0-7]+$/i);\nvar isInvalidHexLiteral = regexTester(/^[-+]0x[0-9a-f]+$/i);\nvar nonWS = ['\\u0085', '\\u200b', '\\ufffe'].join('');\nvar nonWSregex = new $RegExp('[' + nonWS + ']', 'g');\nvar hasNonWS = regexTester(nonWSregex);\n\n// whitespace from: https://es5.github.io/#x15.5.4.20\n// implementation from https://github.com/es-shims/es5-shim/blob/v3.4.0/es5-shim.js#L1304-L1324\nvar ws = [\n\t'\\x09\\x0A\\x0B\\x0C\\x0D\\x20\\xA0\\u1680\\u180E\\u2000\\u2001\\u2002\\u2003',\n\t'\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000\\u2028',\n\t'\\u2029\\uFEFF'\n].join('');\nvar trimRegex = new RegExp('(^[' + ws + ']+)|([' + ws + ']+$)', 'g');\nvar $replace = callBound('String.prototype.replace');\nvar $trim = function (value) {\n\treturn $replace(value, trimRegex, '');\n};\n\nvar ToPrimitive = require('./ToPrimitive');\n\n// https://ecma-international.org/ecma-262/6.0/#sec-tonumber\n\nmodule.exports = function ToNumber(argument) {\n\tvar value = isPrimitive(argument) ? argument : ToPrimitive(argument, $Number);\n\tif (typeof value === 'symbol') {\n\t\tthrow new $TypeError('Cannot convert a Symbol value to a number');\n\t}\n\tif (typeof value === 'bigint') {\n\t\tthrow new $TypeError('Conversion from \\'BigInt\\' to \\'number\\' is not allowed.');\n\t}\n\tif (typeof value === 'string') {\n\t\tif (isBinary(value)) {\n\t\t\treturn ToNumber($parseInteger($strSlice(value, 2), 2));\n\t\t} else if (isOctal(value)) {\n\t\t\treturn ToNumber($parseInteger($strSlice(value, 2), 8));\n\t\t} else if (hasNonWS(value) || isInvalidHexLiteral(value)) {\n\t\t\treturn NaN;\n\t\t}\n\t\tvar trimmed = $trim(value);\n\t\tif (trimmed !== value) {\n\t\t\treturn ToNumber(trimmed);\n\t\t}\n\n\t}\n\treturn $Number(value);\n};\n","'use strict';\n\nvar GetIntrinsic = require('get-intrinsic');\n\nvar $Object = GetIntrinsic('%Object%');\n\nvar RequireObjectCoercible = require('./RequireObjectCoercible');\n\n// https://ecma-international.org/ecma-262/6.0/#sec-toobject\n\nmodule.exports = function ToObject(value) {\n\tRequireObjectCoercible(value);\n\treturn $Object(value);\n};\n","'use strict';\n\nvar toPrimitive = require('es-to-primitive/es2015');\n\n// https://ecma-international.org/ecma-262/6.0/#sec-toprimitive\n\nmodule.exports = function ToPrimitive(input) {\n\tif (arguments.length > 1) {\n\t\treturn toPrimitive(input, arguments[1]);\n\t}\n\treturn toPrimitive(input);\n};\n","'use strict';\n\nvar GetIntrinsic = require('get-intrinsic');\n\nvar $String = GetIntrinsic('%String%');\nvar $TypeError = GetIntrinsic('%TypeError%');\n\n// https://ecma-international.org/ecma-262/6.0/#sec-tostring\n\nmodule.exports = function ToString(argument) {\n\tif (typeof argument === 'symbol') {\n\t\tthrow new $TypeError('Cannot convert a Symbol value to a string');\n\t}\n\treturn $String(argument);\n};\n","'use strict';\n\nvar ToNumber = require('./ToNumber');\n\n// http://262.ecma-international.org/5.1/#sec-9.6\n\nmodule.exports = function ToUint32(x) {\n\treturn ToNumber(x) >>> 0;\n};\n","'use strict';\n\nvar GetIntrinsic = require('get-intrinsic');\n\nvar $TypeError = GetIntrinsic('%TypeError%');\n\n// http://262.ecma-international.org/5.1/#sec-9.10\n\nmodule.exports = function CheckObjectCoercible(value, optMessage) {\n\tif (value == null) {\n\t\tthrow new $TypeError(optMessage || ('Cannot call method on ' + value));\n\t}\n\treturn value;\n};\n","'use strict';\n\nvar GetIntrinsic = require('get-intrinsic');\n\nvar $gOPD = GetIntrinsic('%Object.getOwnPropertyDescriptor%', true);\nif ($gOPD) {\n\ttry {\n\t\t$gOPD([], 'length');\n\t} catch (e) {\n\t\t// IE 8 has a broken gOPD\n\t\t$gOPD = null;\n\t}\n}\n\nmodule.exports = $gOPD;\n","'use strict';\n\nmodule.exports = function isPrimitive(value) {\n\treturn value === null || (typeof value !== 'function' && typeof value !== 'object');\n};\n","'use strict';\n\nvar GetIntrinsic = require('get-intrinsic');\n\nvar $test = GetIntrinsic('RegExp.prototype.test');\n\nvar callBind = require('call-bind');\n\nmodule.exports = function regexTester(regex) {\n\treturn callBind($test, regex);\n};\n","'use strict';\n\n/* eslint global-require: 0 */\n// the code is structured this way so that bundlers can\n// alias out `has-symbols` to `() => true` or `() => false` if your target\n// environments' Symbol capabilities are known, and then use\n// dead code elimination on the rest of this module.\n//\n// Similarly, `isarray` can be aliased to `Array.isArray` if\n// available in all target environments.\n\nvar isArguments = require('is-arguments');\n\nif (require('has-symbols')() || require('has-symbols/shams')()) {\n\tvar $iterator = Symbol.iterator;\n\t// Symbol is available natively or shammed\n\t// natively:\n\t//  - Chrome >= 38\n\t//  - Edge 12-14?, Edge >= 15 for sure\n\t//  - FF >= 36\n\t//  - Safari >= 9\n\t//  - node >= 0.12\n\tmodule.exports = function getIterator(iterable) {\n\t\t// alternatively, `iterable[$iterator]?.()`\n\t\tif (iterable != null && typeof iterable[$iterator] !== 'undefined') {\n\t\t\treturn iterable[$iterator]();\n\t\t}\n\t\tif (isArguments(iterable)) {\n\t\t\t// arguments objects lack Symbol.iterator\n\t\t\t// - node 0.12\n\t\t\treturn Array.prototype[$iterator].call(iterable);\n\t\t}\n\t};\n} else {\n\t// Symbol is not available, native or shammed\n\tvar isArray = require('isarray');\n\tvar isString = require('is-string');\n\tvar GetIntrinsic = require('get-intrinsic');\n\tvar $Map = GetIntrinsic('%Map%', true);\n\tvar $Set = GetIntrinsic('%Set%', true);\n\tvar callBound = require('call-bind/callBound');\n\tvar $arrayPush = callBound('Array.prototype.push');\n\tvar $charCodeAt = callBound('String.prototype.charCodeAt');\n\tvar $stringSlice = callBound('String.prototype.slice');\n\n\tvar advanceStringIndex = function advanceStringIndex(S, index) {\n\t\tvar length = S.length;\n\t\tif ((index + 1) >= length) {\n\t\t\treturn index + 1;\n\t\t}\n\n\t\tvar first = $charCodeAt(S, index);\n\t\tif (first < 0xD800 || first > 0xDBFF) {\n\t\t\treturn index + 1;\n\t\t}\n\n\t\tvar second = $charCodeAt(S, index + 1);\n\t\tif (second < 0xDC00 || second > 0xDFFF) {\n\t\t\treturn index + 1;\n\t\t}\n\n\t\treturn index + 2;\n\t};\n\n\tvar getArrayIterator = function getArrayIterator(arraylike) {\n\t\tvar i = 0;\n\t\treturn {\n\t\t\tnext: function next() {\n\t\t\t\tvar done = i >= arraylike.length;\n\t\t\t\tvar value;\n\t\t\t\tif (!done) {\n\t\t\t\t\tvalue = arraylike[i];\n\t\t\t\t\ti += 1;\n\t\t\t\t}\n\t\t\t\treturn {\n\t\t\t\t\tdone: done,\n\t\t\t\t\tvalue: value\n\t\t\t\t};\n\t\t\t}\n\t\t};\n\t};\n\n\tvar getNonCollectionIterator = function getNonCollectionIterator(iterable, noPrimordialCollections) {\n\t\tif (isArray(iterable) || isArguments(iterable)) {\n\t\t\treturn getArrayIterator(iterable);\n\t\t}\n\t\tif (isString(iterable)) {\n\t\t\tvar i = 0;\n\t\t\treturn {\n\t\t\t\tnext: function next() {\n\t\t\t\t\tvar nextIndex = advanceStringIndex(iterable, i);\n\t\t\t\t\tvar value = $stringSlice(iterable, i, nextIndex);\n\t\t\t\t\ti = nextIndex;\n\t\t\t\t\treturn {\n\t\t\t\t\t\tdone: nextIndex > iterable.length,\n\t\t\t\t\t\tvalue: value\n\t\t\t\t\t};\n\t\t\t\t}\n\t\t\t};\n\t\t}\n\n\t\t// es6-shim and es-shims' es-map use a string \"_es6-shim iterator_\" property on different iterables, such as MapIterator.\n\t\tif (noPrimordialCollections && typeof iterable['_es6-shim iterator_'] !== 'undefined') {\n\t\t\treturn iterable['_es6-shim iterator_']();\n\t\t}\n\t};\n\n\tif (!$Map && !$Set) {\n\t\t// the only language iterables are Array, String, arguments\n\t\t// - Safari <= 6.0\n\t\t// - Chrome < 38\n\t\t// - node < 0.12\n\t\t// - FF < 13\n\t\t// - IE < 11\n\t\t// - Edge < 11\n\n\t\tmodule.exports = function getIterator(iterable) {\n\t\t\tif (iterable != null) {\n\t\t\t\treturn getNonCollectionIterator(iterable, true);\n\t\t\t}\n\t\t};\n\t} else {\n\t\t// either Map or Set are available, but Symbol is not\n\t\t// - es6-shim on an ES5 browser\n\t\t// - Safari 6.2 (maybe 6.1?)\n\t\t// - FF v[13, 36)\n\t\t// - IE 11\n\t\t// - Edge 11\n\t\t// - Safari v[6, 9)\n\n\t\tvar isMap = require('is-map');\n\t\tvar isSet = require('is-set');\n\n\t\t// Firefox >= 27, IE 11, Safari 6.2 - 9, Edge 11, es6-shim in older envs, all have forEach\n\t\tvar $mapForEach = callBound('Map.prototype.forEach', true);\n\t\tvar $setForEach = callBound('Set.prototype.forEach', true);\n\t\tif (typeof process === 'undefined' || !process.versions || !process.versions.node) { // \"if is not node\"\n\n\t\t\t// Firefox 17 - 26 has `.iterator()`, whose iterator `.next()` either\n\t\t\t// returns a value, or throws a StopIteration object. These browsers\n\t\t\t// do not have any other mechanism for iteration.\n\t\t\tvar $mapIterator = callBound('Map.prototype.iterator', true);\n\t\t\tvar $setIterator = callBound('Set.prototype.iterator', true);\n\t\t\tvar getStopIterationIterator = function (iterator) {\n\t\t\t\tvar done = false;\n\t\t\t\treturn {\n\t\t\t\t\tnext: function next() {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\treturn {\n\t\t\t\t\t\t\t\tdone: done,\n\t\t\t\t\t\t\t\tvalue: done ? undefined : iterator.next()\n\t\t\t\t\t\t\t};\n\t\t\t\t\t\t} catch (e) {\n\t\t\t\t\t\t\tdone = true;\n\t\t\t\t\t\t\treturn {\n\t\t\t\t\t\t\t\tdone: true,\n\t\t\t\t\t\t\t\tvalue: undefined\n\t\t\t\t\t\t\t};\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t};\n\t\t\t};\n\t\t}\n\t\t// Firefox 27-35, and some older es6-shim versions, use a string \"@@iterator\" property\n\t\t// this returns a proper iterator object, so we should use it instead of forEach.\n\t\t// newer es6-shim versions use a string \"_es6-shim iterator_\" property.\n\t\tvar $mapAtAtIterator = callBound('Map.prototype.@@iterator', true) || callBound('Map.prototype._es6-shim iterator_', true);\n\t\tvar $setAtAtIterator = callBound('Set.prototype.@@iterator', true) || callBound('Set.prototype._es6-shim iterator_', true);\n\n\t\tvar getCollectionIterator = function getCollectionIterator(iterable) {\n\t\t\tif (isMap(iterable)) {\n\t\t\t\tif ($mapIterator) {\n\t\t\t\t\treturn getStopIterationIterator($mapIterator(iterable));\n\t\t\t\t}\n\t\t\t\tif ($mapAtAtIterator) {\n\t\t\t\t\treturn $mapAtAtIterator(iterable);\n\t\t\t\t}\n\t\t\t\tif ($mapForEach) {\n\t\t\t\t\tvar entries = [];\n\t\t\t\t\t$mapForEach(iterable, function (v, k) {\n\t\t\t\t\t\t$arrayPush(entries, [k, v]);\n\t\t\t\t\t});\n\t\t\t\t\treturn getArrayIterator(entries);\n\t\t\t\t}\n\t\t\t}\n\t\t\tif (isSet(iterable)) {\n\t\t\t\tif ($setIterator) {\n\t\t\t\t\treturn getStopIterationIterator($setIterator(iterable));\n\t\t\t\t}\n\t\t\t\tif ($setAtAtIterator) {\n\t\t\t\t\treturn $setAtAtIterator(iterable);\n\t\t\t\t}\n\t\t\t\tif ($setForEach) {\n\t\t\t\t\tvar values = [];\n\t\t\t\t\t$setForEach(iterable, function (v) {\n\t\t\t\t\t\t$arrayPush(values, v);\n\t\t\t\t\t});\n\t\t\t\t\treturn getArrayIterator(values);\n\t\t\t\t}\n\t\t\t}\n\t\t};\n\n\t\tmodule.exports = function getIterator(iterable) {\n\t\t\treturn getCollectionIterator(iterable) || getNonCollectionIterator(iterable);\n\t\t};\n\t}\n}\n","'use strict';\n\nvar hasSymbols = typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol';\n\nvar isPrimitive = require('./helpers/isPrimitive');\nvar isCallable = require('is-callable');\nvar isDate = require('is-date-object');\nvar isSymbol = require('is-symbol');\n\nvar ordinaryToPrimitive = function OrdinaryToPrimitive(O, hint) {\n\tif (typeof O === 'undefined' || O === null) {\n\t\tthrow new TypeError('Cannot call method on ' + O);\n\t}\n\tif (typeof hint !== 'string' || (hint !== 'number' && hint !== 'string')) {\n\t\tthrow new TypeError('hint must be \"string\" or \"number\"');\n\t}\n\tvar methodNames = hint === 'string' ? ['toString', 'valueOf'] : ['valueOf', 'toString'];\n\tvar method, result, i;\n\tfor (i = 0; i < methodNames.length; ++i) {\n\t\tmethod = O[methodNames[i]];\n\t\tif (isCallable(method)) {\n\t\t\tresult = method.call(O);\n\t\t\tif (isPrimitive(result)) {\n\t\t\t\treturn result;\n\t\t\t}\n\t\t}\n\t}\n\tthrow new TypeError('No default value');\n};\n\nvar GetMethod = function GetMethod(O, P) {\n\tvar func = O[P];\n\tif (func !== null && typeof func !== 'undefined') {\n\t\tif (!isCallable(func)) {\n\t\t\tthrow new TypeError(func + ' returned for property ' + P + ' of object ' + O + ' is not a function');\n\t\t}\n\t\treturn func;\n\t}\n\treturn void 0;\n};\n\n// http://www.ecma-international.org/ecma-262/6.0/#sec-toprimitive\nmodule.exports = function ToPrimitive(input) {\n\tif (isPrimitive(input)) {\n\t\treturn input;\n\t}\n\tvar hint = 'default';\n\tif (arguments.length > 1) {\n\t\tif (arguments[1] === String) {\n\t\t\thint = 'string';\n\t\t} else if (arguments[1] === Number) {\n\t\t\thint = 'number';\n\t\t}\n\t}\n\n\tvar exoticToPrim;\n\tif (hasSymbols) {\n\t\tif (Symbol.toPrimitive) {\n\t\t\texoticToPrim = GetMethod(input, Symbol.toPrimitive);\n\t\t} else if (isSymbol(input)) {\n\t\t\texoticToPrim = Symbol.prototype.valueOf;\n\t\t}\n\t}\n\tif (typeof exoticToPrim !== 'undefined') {\n\t\tvar result = exoticToPrim.call(input, hint);\n\t\tif (isPrimitive(result)) {\n\t\t\treturn result;\n\t\t}\n\t\tthrow new TypeError('unable to convert exotic object to primitive');\n\t}\n\tif (hint === 'default' && (isDate(input) || isSymbol(input))) {\n\t\thint = 'string';\n\t}\n\treturn ordinaryToPrimitive(input, hint === 'default' ? 'number' : hint);\n};\n","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\nvar objectCreate = Object.create || objectCreatePolyfill\nvar objectKeys = Object.keys || objectKeysPolyfill\nvar bind = Function.prototype.bind || functionBindPolyfill\n\nfunction EventEmitter() {\n  if (!this._events || !Object.prototype.hasOwnProperty.call(this, '_events')) {\n    this._events = objectCreate(null);\n    this._eventsCount = 0;\n  }\n\n  this._maxListeners = this._maxListeners || undefined;\n}\nmodule.exports = EventEmitter;\n\n// Backwards-compat with node 0.10.x\nEventEmitter.EventEmitter = EventEmitter;\n\nEventEmitter.prototype._events = undefined;\nEventEmitter.prototype._maxListeners = undefined;\n\n// By default EventEmitters will print a warning if more than 10 listeners are\n// added to it. This is a useful default which helps finding memory leaks.\nvar defaultMaxListeners = 10;\n\nvar hasDefineProperty;\ntry {\n  var o = {};\n  if (Object.defineProperty) Object.defineProperty(o, 'x', { value: 0 });\n  hasDefineProperty = o.x === 0;\n} catch (err) { hasDefineProperty = false }\nif (hasDefineProperty) {\n  Object.defineProperty(EventEmitter, 'defaultMaxListeners', {\n    enumerable: true,\n    get: function() {\n      return defaultMaxListeners;\n    },\n    set: function(arg) {\n      // check whether the input is a positive number (whose value is zero or\n      // greater and not a NaN).\n      if (typeof arg !== 'number' || arg < 0 || arg !== arg)\n        throw new TypeError('\"defaultMaxListeners\" must be a positive number');\n      defaultMaxListeners = arg;\n    }\n  });\n} else {\n  EventEmitter.defaultMaxListeners = defaultMaxListeners;\n}\n\n// Obviously not all Emitters should be limited to 10. This function allows\n// that to be increased. Set to zero for unlimited.\nEventEmitter.prototype.setMaxListeners = function setMaxListeners(n) {\n  if (typeof n !== 'number' || n < 0 || isNaN(n))\n    throw new TypeError('\"n\" argument must be a positive number');\n  this._maxListeners = n;\n  return this;\n};\n\nfunction $getMaxListeners(that) {\n  if (that._maxListeners === undefined)\n    return EventEmitter.defaultMaxListeners;\n  return that._maxListeners;\n}\n\nEventEmitter.prototype.getMaxListeners = function getMaxListeners() {\n  return $getMaxListeners(this);\n};\n\n// These standalone emit* functions are used to optimize calling of event\n// handlers for fast cases because emit() itself often has a variable number of\n// arguments and can be deoptimized because of that. These functions always have\n// the same number of arguments and thus do not get deoptimized, so the code\n// inside them can execute faster.\nfunction emitNone(handler, isFn, self) {\n  if (isFn)\n    handler.call(self);\n  else {\n    var len = handler.length;\n    var listeners = arrayClone(handler, len);\n    for (var i = 0; i < len; ++i)\n      listeners[i].call(self);\n  }\n}\nfunction emitOne(handler, isFn, self, arg1) {\n  if (isFn)\n    handler.call(self, arg1);\n  else {\n    var len = handler.length;\n    var listeners = arrayClone(handler, len);\n    for (var i = 0; i < len; ++i)\n      listeners[i].call(self, arg1);\n  }\n}\nfunction emitTwo(handler, isFn, self, arg1, arg2) {\n  if (isFn)\n    handler.call(self, arg1, arg2);\n  else {\n    var len = handler.length;\n    var listeners = arrayClone(handler, len);\n    for (var i = 0; i < len; ++i)\n      listeners[i].call(self, arg1, arg2);\n  }\n}\nfunction emitThree(handler, isFn, self, arg1, arg2, arg3) {\n  if (isFn)\n    handler.call(self, arg1, arg2, arg3);\n  else {\n    var len = handler.length;\n    var listeners = arrayClone(handler, len);\n    for (var i = 0; i < len; ++i)\n      listeners[i].call(self, arg1, arg2, arg3);\n  }\n}\n\nfunction emitMany(handler, isFn, self, args) {\n  if (isFn)\n    handler.apply(self, args);\n  else {\n    var len = handler.length;\n    var listeners = arrayClone(handler, len);\n    for (var i = 0; i < len; ++i)\n      listeners[i].apply(self, args);\n  }\n}\n\nEventEmitter.prototype.emit = function emit(type) {\n  var er, handler, len, args, i, events;\n  var doError = (type === 'error');\n\n  events = this._events;\n  if (events)\n    doError = (doError && events.error == null);\n  else if (!doError)\n    return false;\n\n  // If there is no 'error' event listener then throw.\n  if (doError) {\n    if (arguments.length > 1)\n      er = arguments[1];\n    if (er instanceof Error) {\n      throw er; // Unhandled 'error' event\n    } else {\n      // At least give some kind of context to the user\n      var err = new Error('Unhandled \"error\" event. (' + er + ')');\n      err.context = er;\n      throw err;\n    }\n    return false;\n  }\n\n  handler = events[type];\n\n  if (!handler)\n    return false;\n\n  var isFn = typeof handler === 'function';\n  len = arguments.length;\n  switch (len) {\n      // fast cases\n    case 1:\n      emitNone(handler, isFn, this);\n      break;\n    case 2:\n      emitOne(handler, isFn, this, arguments[1]);\n      break;\n    case 3:\n      emitTwo(handler, isFn, this, arguments[1], arguments[2]);\n      break;\n    case 4:\n      emitThree(handler, isFn, this, arguments[1], arguments[2], arguments[3]);\n      break;\n      // slower\n    default:\n      args = new Array(len - 1);\n      for (i = 1; i < len; i++)\n        args[i - 1] = arguments[i];\n      emitMany(handler, isFn, this, args);\n  }\n\n  return true;\n};\n\nfunction _addListener(target, type, listener, prepend) {\n  var m;\n  var events;\n  var existing;\n\n  if (typeof listener !== 'function')\n    throw new TypeError('\"listener\" argument must be a function');\n\n  events = target._events;\n  if (!events) {\n    events = target._events = objectCreate(null);\n    target._eventsCount = 0;\n  } else {\n    // To avoid recursion in the case that type === \"newListener\"! Before\n    // adding it to the listeners, first emit \"newListener\".\n    if (events.newListener) {\n      target.emit('newListener', type,\n          listener.listener ? listener.listener : listener);\n\n      // Re-assign `events` because a newListener handler could have caused the\n      // this._events to be assigned to a new object\n      events = target._events;\n    }\n    existing = events[type];\n  }\n\n  if (!existing) {\n    // Optimize the case of one listener. Don't need the extra array object.\n    existing = events[type] = listener;\n    ++target._eventsCount;\n  } else {\n    if (typeof existing === 'function') {\n      // Adding the second element, need to change to array.\n      existing = events[type] =\n          prepend ? [listener, existing] : [existing, listener];\n    } else {\n      // If we've already got an array, just append.\n      if (prepend) {\n        existing.unshift(listener);\n      } else {\n        existing.push(listener);\n      }\n    }\n\n    // Check for listener leak\n    if (!existing.warned) {\n      m = $getMaxListeners(target);\n      if (m && m > 0 && existing.length > m) {\n        existing.warned = true;\n        var w = new Error('Possible EventEmitter memory leak detected. ' +\n            existing.length + ' \"' + String(type) + '\" listeners ' +\n            'added. Use emitter.setMaxListeners() to ' +\n            'increase limit.');\n        w.name = 'MaxListenersExceededWarning';\n        w.emitter = target;\n        w.type = type;\n        w.count = existing.length;\n        if (typeof console === 'object' && console.warn) {\n          console.warn('%s: %s', w.name, w.message);\n        }\n      }\n    }\n  }\n\n  return target;\n}\n\nEventEmitter.prototype.addListener = function addListener(type, listener) {\n  return _addListener(this, type, listener, false);\n};\n\nEventEmitter.prototype.on = EventEmitter.prototype.addListener;\n\nEventEmitter.prototype.prependListener =\n    function prependListener(type, listener) {\n      return _addListener(this, type, listener, true);\n    };\n\nfunction onceWrapper() {\n  if (!this.fired) {\n    this.target.removeListener(this.type, this.wrapFn);\n    this.fired = true;\n    switch (arguments.length) {\n      case 0:\n        return this.listener.call(this.target);\n      case 1:\n        return this.listener.call(this.target, arguments[0]);\n      case 2:\n        return this.listener.call(this.target, arguments[0], arguments[1]);\n      case 3:\n        return this.listener.call(this.target, arguments[0], arguments[1],\n            arguments[2]);\n      default:\n        var args = new Array(arguments.length);\n        for (var i = 0; i < args.length; ++i)\n          args[i] = arguments[i];\n        this.listener.apply(this.target, args);\n    }\n  }\n}\n\nfunction _onceWrap(target, type, listener) {\n  var state = { fired: false, wrapFn: undefined, target: target, type: type, listener: listener };\n  var wrapped = bind.call(onceWrapper, state);\n  wrapped.listener = listener;\n  state.wrapFn = wrapped;\n  return wrapped;\n}\n\nEventEmitter.prototype.once = function once(type, listener) {\n  if (typeof listener !== 'function')\n    throw new TypeError('\"listener\" argument must be a function');\n  this.on(type, _onceWrap(this, type, listener));\n  return this;\n};\n\nEventEmitter.prototype.prependOnceListener =\n    function prependOnceListener(type, listener) {\n      if (typeof listener !== 'function')\n        throw new TypeError('\"listener\" argument must be a function');\n      this.prependListener(type, _onceWrap(this, type, listener));\n      return this;\n    };\n\n// Emits a 'removeListener' event if and only if the listener was removed.\nEventEmitter.prototype.removeListener =\n    function removeListener(type, listener) {\n      var list, events, position, i, originalListener;\n\n      if (typeof listener !== 'function')\n        throw new TypeError('\"listener\" argument must be a function');\n\n      events = this._events;\n      if (!events)\n        return this;\n\n      list = events[type];\n      if (!list)\n        return this;\n\n      if (list === listener || list.listener === listener) {\n        if (--this._eventsCount === 0)\n          this._events = objectCreate(null);\n        else {\n          delete events[type];\n          if (events.removeListener)\n            this.emit('removeListener', type, list.listener || listener);\n        }\n      } else if (typeof list !== 'function') {\n        position = -1;\n\n        for (i = list.length - 1; i >= 0; i--) {\n          if (list[i] === listener || list[i].listener === listener) {\n            originalListener = list[i].listener;\n            position = i;\n            break;\n          }\n        }\n\n        if (position < 0)\n          return this;\n\n        if (position === 0)\n          list.shift();\n        else\n          spliceOne(list, position);\n\n        if (list.length === 1)\n          events[type] = list[0];\n\n        if (events.removeListener)\n          this.emit('removeListener', type, originalListener || listener);\n      }\n\n      return this;\n    };\n\nEventEmitter.prototype.removeAllListeners =\n    function removeAllListeners(type) {\n      var listeners, events, i;\n\n      events = this._events;\n      if (!events)\n        return this;\n\n      // not listening for removeListener, no need to emit\n      if (!events.removeListener) {\n        if (arguments.length === 0) {\n          this._events = objectCreate(null);\n          this._eventsCount = 0;\n        } else if (events[type]) {\n          if (--this._eventsCount === 0)\n            this._events = objectCreate(null);\n          else\n            delete events[type];\n        }\n        return this;\n      }\n\n      // emit removeListener for all listeners on all events\n      if (arguments.length === 0) {\n        var keys = objectKeys(events);\n        var key;\n        for (i = 0; i < keys.length; ++i) {\n          key = keys[i];\n          if (key === 'removeListener') continue;\n          this.removeAllListeners(key);\n        }\n        this.removeAllListeners('removeListener');\n        this._events = objectCreate(null);\n        this._eventsCount = 0;\n        return this;\n      }\n\n      listeners = events[type];\n\n      if (typeof listeners === 'function') {\n        this.removeListener(type, listeners);\n      } else if (listeners) {\n        // LIFO order\n        for (i = listeners.length - 1; i >= 0; i--) {\n          this.removeListener(type, listeners[i]);\n        }\n      }\n\n      return this;\n    };\n\nfunction _listeners(target, type, unwrap) {\n  var events = target._events;\n\n  if (!events)\n    return [];\n\n  var evlistener = events[type];\n  if (!evlistener)\n    return [];\n\n  if (typeof evlistener === 'function')\n    return unwrap ? [evlistener.listener || evlistener] : [evlistener];\n\n  return unwrap ? unwrapListeners(evlistener) : arrayClone(evlistener, evlistener.length);\n}\n\nEventEmitter.prototype.listeners = function listeners(type) {\n  return _listeners(this, type, true);\n};\n\nEventEmitter.prototype.rawListeners = function rawListeners(type) {\n  return _listeners(this, type, false);\n};\n\nEventEmitter.listenerCount = function(emitter, type) {\n  if (typeof emitter.listenerCount === 'function') {\n    return emitter.listenerCount(type);\n  } else {\n    return listenerCount.call(emitter, type);\n  }\n};\n\nEventEmitter.prototype.listenerCount = listenerCount;\nfunction listenerCount(type) {\n  var events = this._events;\n\n  if (events) {\n    var evlistener = events[type];\n\n    if (typeof evlistener === 'function') {\n      return 1;\n    } else if (evlistener) {\n      return evlistener.length;\n    }\n  }\n\n  return 0;\n}\n\nEventEmitter.prototype.eventNames = function eventNames() {\n  return this._eventsCount > 0 ? Reflect.ownKeys(this._events) : [];\n};\n\n// About 1.5x faster than the two-arg version of Array#splice().\nfunction spliceOne(list, index) {\n  for (var i = index, k = i + 1, n = list.length; k < n; i += 1, k += 1)\n    list[i] = list[k];\n  list.pop();\n}\n\nfunction arrayClone(arr, n) {\n  var copy = new Array(n);\n  for (var i = 0; i < n; ++i)\n    copy[i] = arr[i];\n  return copy;\n}\n\nfunction unwrapListeners(arr) {\n  var ret = new Array(arr.length);\n  for (var i = 0; i < ret.length; ++i) {\n    ret[i] = arr[i].listener || arr[i];\n  }\n  return ret;\n}\n\nfunction objectCreatePolyfill(proto) {\n  var F = function() {};\n  F.prototype = proto;\n  return new F;\n}\nfunction objectKeysPolyfill(obj) {\n  var keys = [];\n  for (var k in obj) if (Object.prototype.hasOwnProperty.call(obj, k)) {\n    keys.push(k);\n  }\n  return k;\n}\nfunction functionBindPolyfill(context) {\n  var fn = this;\n  return function () {\n    return fn.apply(context, arguments);\n  };\n}\n","'use strict';\n\nvar isCallable = require('is-callable');\n\nvar toStr = Object.prototype.toString;\nvar hasOwnProperty = Object.prototype.hasOwnProperty;\n\nvar forEachArray = function forEachArray(array, iterator, receiver) {\n    for (var i = 0, len = array.length; i < len; i++) {\n        if (hasOwnProperty.call(array, i)) {\n            if (receiver == null) {\n                iterator(array[i], i, array);\n            } else {\n                iterator.call(receiver, array[i], i, array);\n            }\n        }\n    }\n};\n\nvar forEachString = function forEachString(string, iterator, receiver) {\n    for (var i = 0, len = string.length; i < len; i++) {\n        // no such thing as a sparse string.\n        if (receiver == null) {\n            iterator(string.charAt(i), i, string);\n        } else {\n            iterator.call(receiver, string.charAt(i), i, string);\n        }\n    }\n};\n\nvar forEachObject = function forEachObject(object, iterator, receiver) {\n    for (var k in object) {\n        if (hasOwnProperty.call(object, k)) {\n            if (receiver == null) {\n                iterator(object[k], k, object);\n            } else {\n                iterator.call(receiver, object[k], k, object);\n            }\n        }\n    }\n};\n\nvar forEach = function forEach(list, iterator, thisArg) {\n    if (!isCallable(iterator)) {\n        throw new TypeError('iterator must be a function');\n    }\n\n    var receiver;\n    if (arguments.length >= 3) {\n        receiver = thisArg;\n    }\n\n    if (toStr.call(list) === '[object Array]') {\n        forEachArray(list, iterator, receiver);\n    } else if (typeof list === 'string') {\n        forEachString(list, iterator, receiver);\n    } else {\n        forEachObject(list, iterator, receiver);\n    }\n};\n\nmodule.exports = forEach;\n","\nvar hasOwn = Object.prototype.hasOwnProperty;\nvar toString = Object.prototype.toString;\n\nmodule.exports = function forEach (obj, fn, ctx) {\n    if (toString.call(fn) !== '[object Function]') {\n        throw new TypeError('iterator must be a function');\n    }\n    var l = obj.length;\n    if (l === +l) {\n        for (var i = 0; i < l; i++) {\n            fn.call(ctx, obj[i], i, obj);\n        }\n    } else {\n        for (var k in obj) {\n            if (hasOwn.call(obj, k)) {\n                fn.call(ctx, obj[k], k, obj);\n            }\n        }\n    }\n};\n\n","'use strict';\n\n/* eslint no-invalid-this: 1 */\n\nvar ERROR_MESSAGE = 'Function.prototype.bind called on incompatible ';\nvar slice = Array.prototype.slice;\nvar toStr = Object.prototype.toString;\nvar funcType = '[object Function]';\n\nmodule.exports = function bind(that) {\n    var target = this;\n    if (typeof target !== 'function' || toStr.call(target) !== funcType) {\n        throw new TypeError(ERROR_MESSAGE + target);\n    }\n    var args = slice.call(arguments, 1);\n\n    var bound;\n    var binder = function () {\n        if (this instanceof bound) {\n            var result = target.apply(\n                this,\n                args.concat(slice.call(arguments))\n            );\n            if (Object(result) === result) {\n                return result;\n            }\n            return this;\n        } else {\n            return target.apply(\n                that,\n                args.concat(slice.call(arguments))\n            );\n        }\n    };\n\n    var boundLength = Math.max(0, target.length - args.length);\n    var boundArgs = [];\n    for (var i = 0; i < boundLength; i++) {\n        boundArgs.push('$' + i);\n    }\n\n    bound = Function('binder', 'return function (' + boundArgs.join(',') + '){ return binder.apply(this,arguments); }')(binder);\n\n    if (target.prototype) {\n        var Empty = function Empty() {};\n        Empty.prototype = target.prototype;\n        bound.prototype = new Empty();\n        Empty.prototype = null;\n    }\n\n    return bound;\n};\n","'use strict';\n\nvar implementation = require('./implementation');\n\nmodule.exports = Function.prototype.bind || implementation;\n","'use strict';\n\nvar functionsHaveNames = function functionsHaveNames() {\n\treturn typeof function f() {}.name === 'string';\n};\n\nvar gOPD = Object.getOwnPropertyDescriptor;\nif (gOPD) {\n\ttry {\n\t\tgOPD([], 'length');\n\t} catch (e) {\n\t\t// IE 8 has a broken gOPD\n\t\tgOPD = null;\n\t}\n}\n\nfunctionsHaveNames.functionsHaveConfigurableNames = function functionsHaveConfigurableNames() {\n\tif (!functionsHaveNames() || !gOPD) {\n\t\treturn false;\n\t}\n\tvar desc = gOPD(function () {}, 'name');\n\treturn !!desc && !!desc.configurable;\n};\n\nvar $bind = Function.prototype.bind;\n\nfunctionsHaveNames.boundFunctionsHaveNames = function boundFunctionsHaveNames() {\n\treturn functionsHaveNames() && typeof $bind === 'function' && function f() {}.bind().name !== '';\n};\n\nmodule.exports = functionsHaveNames;\n","'use strict';\n\nvar undefined;\n\nvar $SyntaxError = SyntaxError;\nvar $Function = Function;\nvar $TypeError = TypeError;\n\n// eslint-disable-next-line consistent-return\nvar getEvalledConstructor = function (expressionSyntax) {\n\ttry {\n\t\treturn $Function('\"use strict\"; return (' + expressionSyntax + ').constructor;')();\n\t} catch (e) {}\n};\n\nvar $gOPD = Object.getOwnPropertyDescriptor;\nif ($gOPD) {\n\ttry {\n\t\t$gOPD({}, '');\n\t} catch (e) {\n\t\t$gOPD = null; // this is IE 8, which has a broken gOPD\n\t}\n}\n\nvar throwTypeError = function () {\n\tthrow new $TypeError();\n};\nvar ThrowTypeError = $gOPD\n\t? (function () {\n\t\ttry {\n\t\t\t// eslint-disable-next-line no-unused-expressions, no-caller, no-restricted-properties\n\t\t\targuments.callee; // IE 8 does not throw here\n\t\t\treturn throwTypeError;\n\t\t} catch (calleeThrows) {\n\t\t\ttry {\n\t\t\t\t// IE 8 throws on Object.getOwnPropertyDescriptor(arguments, '')\n\t\t\t\treturn $gOPD(arguments, 'callee').get;\n\t\t\t} catch (gOPDthrows) {\n\t\t\t\treturn throwTypeError;\n\t\t\t}\n\t\t}\n\t}())\n\t: throwTypeError;\n\nvar hasSymbols = require('has-symbols')();\n\nvar getProto = Object.getPrototypeOf || function (x) { return x.__proto__; }; // eslint-disable-line no-proto\n\nvar needsEval = {};\n\nvar TypedArray = typeof Uint8Array === 'undefined' ? undefined : getProto(Uint8Array);\n\nvar INTRINSICS = {\n\t'%AggregateError%': typeof AggregateError === 'undefined' ? undefined : AggregateError,\n\t'%Array%': Array,\n\t'%ArrayBuffer%': typeof ArrayBuffer === 'undefined' ? undefined : ArrayBuffer,\n\t'%ArrayIteratorPrototype%': hasSymbols ? getProto([][Symbol.iterator]()) : undefined,\n\t'%AsyncFromSyncIteratorPrototype%': undefined,\n\t'%AsyncFunction%': needsEval,\n\t'%AsyncGenerator%': needsEval,\n\t'%AsyncGeneratorFunction%': needsEval,\n\t'%AsyncIteratorPrototype%': needsEval,\n\t'%Atomics%': typeof Atomics === 'undefined' ? undefined : Atomics,\n\t'%BigInt%': typeof BigInt === 'undefined' ? undefined : BigInt,\n\t'%Boolean%': Boolean,\n\t'%DataView%': typeof DataView === 'undefined' ? undefined : DataView,\n\t'%Date%': Date,\n\t'%decodeURI%': decodeURI,\n\t'%decodeURIComponent%': decodeURIComponent,\n\t'%encodeURI%': encodeURI,\n\t'%encodeURIComponent%': encodeURIComponent,\n\t'%Error%': Error,\n\t'%eval%': eval, // eslint-disable-line no-eval\n\t'%EvalError%': EvalError,\n\t'%Float32Array%': typeof Float32Array === 'undefined' ? undefined : Float32Array,\n\t'%Float64Array%': typeof Float64Array === 'undefined' ? undefined : Float64Array,\n\t'%FinalizationRegistry%': typeof FinalizationRegistry === 'undefined' ? undefined : FinalizationRegistry,\n\t'%Function%': $Function,\n\t'%GeneratorFunction%': needsEval,\n\t'%Int8Array%': typeof Int8Array === 'undefined' ? undefined : Int8Array,\n\t'%Int16Array%': typeof Int16Array === 'undefined' ? undefined : Int16Array,\n\t'%Int32Array%': typeof Int32Array === 'undefined' ? undefined : Int32Array,\n\t'%isFinite%': isFinite,\n\t'%isNaN%': isNaN,\n\t'%IteratorPrototype%': hasSymbols ? getProto(getProto([][Symbol.iterator]())) : undefined,\n\t'%JSON%': typeof JSON === 'object' ? JSON : undefined,\n\t'%Map%': typeof Map === 'undefined' ? undefined : Map,\n\t'%MapIteratorPrototype%': typeof Map === 'undefined' || !hasSymbols ? undefined : getProto(new Map()[Symbol.iterator]()),\n\t'%Math%': Math,\n\t'%Number%': Number,\n\t'%Object%': Object,\n\t'%parseFloat%': parseFloat,\n\t'%parseInt%': parseInt,\n\t'%Promise%': typeof Promise === 'undefined' ? undefined : Promise,\n\t'%Proxy%': typeof Proxy === 'undefined' ? undefined : Proxy,\n\t'%RangeError%': RangeError,\n\t'%ReferenceError%': ReferenceError,\n\t'%Reflect%': typeof Reflect === 'undefined' ? undefined : Reflect,\n\t'%RegExp%': RegExp,\n\t'%Set%': typeof Set === 'undefined' ? undefined : Set,\n\t'%SetIteratorPrototype%': typeof Set === 'undefined' || !hasSymbols ? undefined : getProto(new Set()[Symbol.iterator]()),\n\t'%SharedArrayBuffer%': typeof SharedArrayBuffer === 'undefined' ? undefined : SharedArrayBuffer,\n\t'%String%': String,\n\t'%StringIteratorPrototype%': hasSymbols ? getProto(''[Symbol.iterator]()) : undefined,\n\t'%Symbol%': hasSymbols ? Symbol : undefined,\n\t'%SyntaxError%': $SyntaxError,\n\t'%ThrowTypeError%': ThrowTypeError,\n\t'%TypedArray%': TypedArray,\n\t'%TypeError%': $TypeError,\n\t'%Uint8Array%': typeof Uint8Array === 'undefined' ? undefined : Uint8Array,\n\t'%Uint8ClampedArray%': typeof Uint8ClampedArray === 'undefined' ? undefined : Uint8ClampedArray,\n\t'%Uint16Array%': typeof Uint16Array === 'undefined' ? undefined : Uint16Array,\n\t'%Uint32Array%': typeof Uint32Array === 'undefined' ? undefined : Uint32Array,\n\t'%URIError%': URIError,\n\t'%WeakMap%': typeof WeakMap === 'undefined' ? undefined : WeakMap,\n\t'%WeakRef%': typeof WeakRef === 'undefined' ? undefined : WeakRef,\n\t'%WeakSet%': typeof WeakSet === 'undefined' ? undefined : WeakSet\n};\n\nvar doEval = function doEval(name) {\n\tvar value;\n\tif (name === '%AsyncFunction%') {\n\t\tvalue = getEvalledConstructor('async function () {}');\n\t} else if (name === '%GeneratorFunction%') {\n\t\tvalue = getEvalledConstructor('function* () {}');\n\t} else if (name === '%AsyncGeneratorFunction%') {\n\t\tvalue = getEvalledConstructor('async function* () {}');\n\t} else if (name === '%AsyncGenerator%') {\n\t\tvar fn = doEval('%AsyncGeneratorFunction%');\n\t\tif (fn) {\n\t\t\tvalue = fn.prototype;\n\t\t}\n\t} else if (name === '%AsyncIteratorPrototype%') {\n\t\tvar gen = doEval('%AsyncGenerator%');\n\t\tif (gen) {\n\t\t\tvalue = getProto(gen.prototype);\n\t\t}\n\t}\n\n\tINTRINSICS[name] = value;\n\n\treturn value;\n};\n\nvar LEGACY_ALIASES = {\n\t'%ArrayBufferPrototype%': ['ArrayBuffer', 'prototype'],\n\t'%ArrayPrototype%': ['Array', 'prototype'],\n\t'%ArrayProto_entries%': ['Array', 'prototype', 'entries'],\n\t'%ArrayProto_forEach%': ['Array', 'prototype', 'forEach'],\n\t'%ArrayProto_keys%': ['Array', 'prototype', 'keys'],\n\t'%ArrayProto_values%': ['Array', 'prototype', 'values'],\n\t'%AsyncFunctionPrototype%': ['AsyncFunction', 'prototype'],\n\t'%AsyncGenerator%': ['AsyncGeneratorFunction', 'prototype'],\n\t'%AsyncGeneratorPrototype%': ['AsyncGeneratorFunction', 'prototype', 'prototype'],\n\t'%BooleanPrototype%': ['Boolean', 'prototype'],\n\t'%DataViewPrototype%': ['DataView', 'prototype'],\n\t'%DatePrototype%': ['Date', 'prototype'],\n\t'%ErrorPrototype%': ['Error', 'prototype'],\n\t'%EvalErrorPrototype%': ['EvalError', 'prototype'],\n\t'%Float32ArrayPrototype%': ['Float32Array', 'prototype'],\n\t'%Float64ArrayPrototype%': ['Float64Array', 'prototype'],\n\t'%FunctionPrototype%': ['Function', 'prototype'],\n\t'%Generator%': ['GeneratorFunction', 'prototype'],\n\t'%GeneratorPrototype%': ['GeneratorFunction', 'prototype', 'prototype'],\n\t'%Int8ArrayPrototype%': ['Int8Array', 'prototype'],\n\t'%Int16ArrayPrototype%': ['Int16Array', 'prototype'],\n\t'%Int32ArrayPrototype%': ['Int32Array', 'prototype'],\n\t'%JSONParse%': ['JSON', 'parse'],\n\t'%JSONStringify%': ['JSON', 'stringify'],\n\t'%MapPrototype%': ['Map', 'prototype'],\n\t'%NumberPrototype%': ['Number', 'prototype'],\n\t'%ObjectPrototype%': ['Object', 'prototype'],\n\t'%ObjProto_toString%': ['Object', 'prototype', 'toString'],\n\t'%ObjProto_valueOf%': ['Object', 'prototype', 'valueOf'],\n\t'%PromisePrototype%': ['Promise', 'prototype'],\n\t'%PromiseProto_then%': ['Promise', 'prototype', 'then'],\n\t'%Promise_all%': ['Promise', 'all'],\n\t'%Promise_reject%': ['Promise', 'reject'],\n\t'%Promise_resolve%': ['Promise', 'resolve'],\n\t'%RangeErrorPrototype%': ['RangeError', 'prototype'],\n\t'%ReferenceErrorPrototype%': ['ReferenceError', 'prototype'],\n\t'%RegExpPrototype%': ['RegExp', 'prototype'],\n\t'%SetPrototype%': ['Set', 'prototype'],\n\t'%SharedArrayBufferPrototype%': ['SharedArrayBuffer', 'prototype'],\n\t'%StringPrototype%': ['String', 'prototype'],\n\t'%SymbolPrototype%': ['Symbol', 'prototype'],\n\t'%SyntaxErrorPrototype%': ['SyntaxError', 'prototype'],\n\t'%TypedArrayPrototype%': ['TypedArray', 'prototype'],\n\t'%TypeErrorPrototype%': ['TypeError', 'prototype'],\n\t'%Uint8ArrayPrototype%': ['Uint8Array', 'prototype'],\n\t'%Uint8ClampedArrayPrototype%': ['Uint8ClampedArray', 'prototype'],\n\t'%Uint16ArrayPrototype%': ['Uint16Array', 'prototype'],\n\t'%Uint32ArrayPrototype%': ['Uint32Array', 'prototype'],\n\t'%URIErrorPrototype%': ['URIError', 'prototype'],\n\t'%WeakMapPrototype%': ['WeakMap', 'prototype'],\n\t'%WeakSetPrototype%': ['WeakSet', 'prototype']\n};\n\nvar bind = require('function-bind');\nvar hasOwn = require('has');\nvar $concat = bind.call(Function.call, Array.prototype.concat);\nvar $spliceApply = bind.call(Function.apply, Array.prototype.splice);\nvar $replace = bind.call(Function.call, String.prototype.replace);\nvar $strSlice = bind.call(Function.call, String.prototype.slice);\n\n/* adapted from https://github.com/lodash/lodash/blob/4.17.15/dist/lodash.js#L6735-L6744 */\nvar rePropName = /[^%.[\\]]+|\\[(?:(-?\\d+(?:\\.\\d+)?)|([\"'])((?:(?!\\2)[^\\\\]|\\\\.)*?)\\2)\\]|(?=(?:\\.|\\[\\])(?:\\.|\\[\\]|%$))/g;\nvar reEscapeChar = /\\\\(\\\\)?/g; /** Used to match backslashes in property paths. */\nvar stringToPath = function stringToPath(string) {\n\tvar first = $strSlice(string, 0, 1);\n\tvar last = $strSlice(string, -1);\n\tif (first === '%' && last !== '%') {\n\t\tthrow new $SyntaxError('invalid intrinsic syntax, expected closing `%`');\n\t} else if (last === '%' && first !== '%') {\n\t\tthrow new $SyntaxError('invalid intrinsic syntax, expected opening `%`');\n\t}\n\tvar result = [];\n\t$replace(string, rePropName, function (match, number, quote, subString) {\n\t\tresult[result.length] = quote ? $replace(subString, reEscapeChar, '$1') : number || match;\n\t});\n\treturn result;\n};\n/* end adaptation */\n\nvar getBaseIntrinsic = function getBaseIntrinsic(name, allowMissing) {\n\tvar intrinsicName = name;\n\tvar alias;\n\tif (hasOwn(LEGACY_ALIASES, intrinsicName)) {\n\t\talias = LEGACY_ALIASES[intrinsicName];\n\t\tintrinsicName = '%' + alias[0] + '%';\n\t}\n\n\tif (hasOwn(INTRINSICS, intrinsicName)) {\n\t\tvar value = INTRINSICS[intrinsicName];\n\t\tif (value === needsEval) {\n\t\t\tvalue = doEval(intrinsicName);\n\t\t}\n\t\tif (typeof value === 'undefined' && !allowMissing) {\n\t\t\tthrow new $TypeError('intrinsic ' + name + ' exists, but is not available. Please file an issue!');\n\t\t}\n\n\t\treturn {\n\t\t\talias: alias,\n\t\t\tname: intrinsicName,\n\t\t\tvalue: value\n\t\t};\n\t}\n\n\tthrow new $SyntaxError('intrinsic ' + name + ' does not exist!');\n};\n\nmodule.exports = function GetIntrinsic(name, allowMissing) {\n\tif (typeof name !== 'string' || name.length === 0) {\n\t\tthrow new $TypeError('intrinsic name must be a non-empty string');\n\t}\n\tif (arguments.length > 1 && typeof allowMissing !== 'boolean') {\n\t\tthrow new $TypeError('\"allowMissing\" argument must be a boolean');\n\t}\n\n\tvar parts = stringToPath(name);\n\tvar intrinsicBaseName = parts.length > 0 ? parts[0] : '';\n\n\tvar intrinsic = getBaseIntrinsic('%' + intrinsicBaseName + '%', allowMissing);\n\tvar intrinsicRealName = intrinsic.name;\n\tvar value = intrinsic.value;\n\tvar skipFurtherCaching = false;\n\n\tvar alias = intrinsic.alias;\n\tif (alias) {\n\t\tintrinsicBaseName = alias[0];\n\t\t$spliceApply(parts, $concat([0, 1], alias));\n\t}\n\n\tfor (var i = 1, isOwn = true; i < parts.length; i += 1) {\n\t\tvar part = parts[i];\n\t\tvar first = $strSlice(part, 0, 1);\n\t\tvar last = $strSlice(part, -1);\n\t\tif (\n\t\t\t(\n\t\t\t\t(first === '\"' || first === \"'\" || first === '`')\n\t\t\t\t|| (last === '\"' || last === \"'\" || last === '`')\n\t\t\t)\n\t\t\t&& first !== last\n\t\t) {\n\t\t\tthrow new $SyntaxError('property names with quotes must have matching quotes');\n\t\t}\n\t\tif (part === 'constructor' || !isOwn) {\n\t\t\tskipFurtherCaching = true;\n\t\t}\n\n\t\tintrinsicBaseName += '.' + part;\n\t\tintrinsicRealName = '%' + intrinsicBaseName + '%';\n\n\t\tif (hasOwn(INTRINSICS, intrinsicRealName)) {\n\t\t\tvalue = INTRINSICS[intrinsicRealName];\n\t\t} else if (value != null) {\n\t\t\tif (!(part in value)) {\n\t\t\t\tif (!allowMissing) {\n\t\t\t\t\tthrow new $TypeError('base intrinsic for ' + name + ' exists, but the property is not available.');\n\t\t\t\t}\n\t\t\t\treturn void undefined;\n\t\t\t}\n\t\t\tif ($gOPD && (i + 1) >= parts.length) {\n\t\t\t\tvar desc = $gOPD(value, part);\n\t\t\t\tisOwn = !!desc;\n\n\t\t\t\t// By convention, when a data property is converted to an accessor\n\t\t\t\t// property to emulate a data property that does not suffer from\n\t\t\t\t// the override mistake, that accessor's getter is marked with\n\t\t\t\t// an `originalValue` property. Here, when we detect this, we\n\t\t\t\t// uphold the illusion by pretending to see that original data\n\t\t\t\t// property, i.e., returning the value rather than the getter\n\t\t\t\t// itself.\n\t\t\t\tif (isOwn && 'get' in desc && !('originalValue' in desc.get)) {\n\t\t\t\t\tvalue = desc.get;\n\t\t\t\t} else {\n\t\t\t\t\tvalue = value[part];\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tisOwn = hasOwn(value, part);\n\t\t\t\tvalue = value[part];\n\t\t\t}\n\n\t\t\tif (isOwn && !skipFurtherCaching) {\n\t\t\t\tINTRINSICS[intrinsicRealName] = value;\n\t\t\t}\n\t\t}\n\t}\n\treturn value;\n};\n","'use strict';\n\nvar $BigInt = global.BigInt;\n\nmodule.exports = function hasNativeBigInts() {\n\treturn typeof $BigInt === 'function'\n\t\t&& typeof BigInt === 'function'\n\t\t&& typeof $BigInt(42) === 'bigint' // eslint-disable-line no-magic-numbers\n\t\t&& typeof BigInt(42) === 'bigint'; // eslint-disable-line no-magic-numbers\n};\n","'use strict';\n\nvar GetIntrinsic = require('get-intrinsic');\n\nvar $defineProperty = GetIntrinsic('%Object.defineProperty%', true);\n\nvar hasPropertyDescriptors = function hasPropertyDescriptors() {\n\tif ($defineProperty) {\n\t\ttry {\n\t\t\t$defineProperty({}, 'a', { value: 1 });\n\t\t\treturn true;\n\t\t} catch (e) {\n\t\t\t// IE 8 has a broken defineProperty\n\t\t\treturn false;\n\t\t}\n\t}\n\treturn false;\n};\n\nhasPropertyDescriptors.hasArrayLengthDefineBug = function hasArrayLengthDefineBug() {\n\t// node v0.6 has a bug where array lengths can be Set but not Defined\n\tif (!hasPropertyDescriptors()) {\n\t\treturn null;\n\t}\n\ttry {\n\t\treturn $defineProperty([], 'length', { value: 1 }).length !== 1;\n\t} catch (e) {\n\t\t// In Firefox 4-22, defining length on an array throws an exception.\n\t\treturn true;\n\t}\n};\n\nmodule.exports = hasPropertyDescriptors;\n","'use strict';\n\nvar origSymbol = typeof Symbol !== 'undefined' && Symbol;\nvar hasSymbolSham = require('./shams');\n\nmodule.exports = function hasNativeSymbols() {\n\tif (typeof origSymbol !== 'function') { return false; }\n\tif (typeof Symbol !== 'function') { return false; }\n\tif (typeof origSymbol('foo') !== 'symbol') { return false; }\n\tif (typeof Symbol('bar') !== 'symbol') { return false; }\n\n\treturn hasSymbolSham();\n};\n","'use strict';\n\n/* eslint complexity: [2, 18], max-statements: [2, 33] */\nmodule.exports = function hasSymbols() {\n\tif (typeof Symbol !== 'function' || typeof Object.getOwnPropertySymbols !== 'function') { return false; }\n\tif (typeof Symbol.iterator === 'symbol') { return true; }\n\n\tvar obj = {};\n\tvar sym = Symbol('test');\n\tvar symObj = Object(sym);\n\tif (typeof sym === 'string') { return false; }\n\n\tif (Object.prototype.toString.call(sym) !== '[object Symbol]') { return false; }\n\tif (Object.prototype.toString.call(symObj) !== '[object Symbol]') { return false; }\n\n\t// temp disabled per https://github.com/ljharb/object.assign/issues/17\n\t// if (sym instanceof Symbol) { return false; }\n\t// temp disabled per https://github.com/WebReflection/get-own-property-symbols/issues/4\n\t// if (!(symObj instanceof Symbol)) { return false; }\n\n\t// if (typeof Symbol.prototype.toString !== 'function') { return false; }\n\t// if (String(sym) !== Symbol.prototype.toString.call(sym)) { return false; }\n\n\tvar symVal = 42;\n\tobj[sym] = symVal;\n\tfor (sym in obj) { return false; } // eslint-disable-line no-restricted-syntax, no-unreachable-loop\n\tif (typeof Object.keys === 'function' && Object.keys(obj).length !== 0) { return false; }\n\n\tif (typeof Object.getOwnPropertyNames === 'function' && Object.getOwnPropertyNames(obj).length !== 0) { return false; }\n\n\tvar syms = Object.getOwnPropertySymbols(obj);\n\tif (syms.length !== 1 || syms[0] !== sym) { return false; }\n\n\tif (!Object.prototype.propertyIsEnumerable.call(obj, sym)) { return false; }\n\n\tif (typeof Object.getOwnPropertyDescriptor === 'function') {\n\t\tvar descriptor = Object.getOwnPropertyDescriptor(obj, sym);\n\t\tif (descriptor.value !== symVal || descriptor.enumerable !== true) { return false; }\n\t}\n\n\treturn true;\n};\n","'use strict';\n\nvar hasSymbols = require('has-symbols/shams');\n\nmodule.exports = function hasToStringTagShams() {\n\treturn hasSymbols() && !!Symbol.toStringTag;\n};\n","'use strict';\n\nvar bind = require('function-bind');\n\nmodule.exports = bind.call(Function.call, Object.prototype.hasOwnProperty);\n","/*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */\nexports.read = function (buffer, offset, isLE, mLen, nBytes) {\n  var e, m\n  var eLen = (nBytes * 8) - mLen - 1\n  var eMax = (1 << eLen) - 1\n  var eBias = eMax >> 1\n  var nBits = -7\n  var i = isLE ? (nBytes - 1) : 0\n  var d = isLE ? -1 : 1\n  var s = buffer[offset + i]\n\n  i += d\n\n  e = s & ((1 << (-nBits)) - 1)\n  s >>= (-nBits)\n  nBits += eLen\n  for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n  m = e & ((1 << (-nBits)) - 1)\n  e >>= (-nBits)\n  nBits += mLen\n  for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n  if (e === 0) {\n    e = 1 - eBias\n  } else if (e === eMax) {\n    return m ? NaN : ((s ? -1 : 1) * Infinity)\n  } else {\n    m = m + Math.pow(2, mLen)\n    e = e - eBias\n  }\n  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)\n}\n\nexports.write = function (buffer, value, offset, isLE, mLen, nBytes) {\n  var e, m, c\n  var eLen = (nBytes * 8) - mLen - 1\n  var eMax = (1 << eLen) - 1\n  var eBias = eMax >> 1\n  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)\n  var i = isLE ? 0 : (nBytes - 1)\n  var d = isLE ? 1 : -1\n  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0\n\n  value = Math.abs(value)\n\n  if (isNaN(value) || value === Infinity) {\n    m = isNaN(value) ? 1 : 0\n    e = eMax\n  } else {\n    e = Math.floor(Math.log(value) / Math.LN2)\n    if (value * (c = Math.pow(2, -e)) < 1) {\n      e--\n      c *= 2\n    }\n    if (e + eBias >= 1) {\n      value += rt / c\n    } else {\n      value += rt * Math.pow(2, 1 - eBias)\n    }\n    if (value * c >= 2) {\n      e++\n      c /= 2\n    }\n\n    if (e + eBias >= eMax) {\n      m = 0\n      e = eMax\n    } else if (e + eBias >= 1) {\n      m = ((value * c) - 1) * Math.pow(2, mLen)\n      e = e + eBias\n    } else {\n      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)\n      e = 0\n    }\n  }\n\n  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}\n\n  e = (e << mLen) | m\n  eLen += mLen\n  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}\n\n  buffer[offset + i - d] |= s * 128\n}\n","if (typeof Object.create === 'function') {\n  // implementation from standard node.js 'util' module\n  module.exports = function inherits(ctor, superCtor) {\n    if (superCtor) {\n      ctor.super_ = superCtor\n      ctor.prototype = Object.create(superCtor.prototype, {\n        constructor: {\n          value: ctor,\n          enumerable: false,\n          writable: true,\n          configurable: true\n        }\n      })\n    }\n  };\n} else {\n  // old school shim for old browsers\n  module.exports = function inherits(ctor, superCtor) {\n    if (superCtor) {\n      ctor.super_ = superCtor\n      var TempCtor = function () {}\n      TempCtor.prototype = superCtor.prototype\n      ctor.prototype = new TempCtor()\n      ctor.prototype.constructor = ctor\n    }\n  }\n}\n","'use strict';\n\nvar hasToStringTag = require('has-tostringtag/shams')();\nvar callBound = require('call-bind/callBound');\n\nvar $toString = callBound('Object.prototype.toString');\n\nvar isStandardArguments = function isArguments(value) {\n\tif (hasToStringTag && value && typeof value === 'object' && Symbol.toStringTag in value) {\n\t\treturn false;\n\t}\n\treturn $toString(value) === '[object Arguments]';\n};\n\nvar isLegacyArguments = function isArguments(value) {\n\tif (isStandardArguments(value)) {\n\t\treturn true;\n\t}\n\treturn value !== null &&\n\t\ttypeof value === 'object' &&\n\t\ttypeof value.length === 'number' &&\n\t\tvalue.length >= 0 &&\n\t\t$toString(value) !== '[object Array]' &&\n\t\t$toString(value.callee) === '[object Function]';\n};\n\nvar supportsStandardArguments = (function () {\n\treturn isStandardArguments(arguments);\n}());\n\nisStandardArguments.isLegacyArguments = isLegacyArguments; // for tests\n\nmodule.exports = supportsStandardArguments ? isStandardArguments : isLegacyArguments;\n","'use strict';\n\nvar hasBigInts = require('has-bigints')();\n\nif (hasBigInts) {\n\tvar bigIntValueOf = BigInt.prototype.valueOf;\n\tvar tryBigInt = function tryBigIntObject(value) {\n\t\ttry {\n\t\t\tbigIntValueOf.call(value);\n\t\t\treturn true;\n\t\t} catch (e) {\n\t\t}\n\t\treturn false;\n\t};\n\n\tmodule.exports = function isBigInt(value) {\n\t\tif (\n\t\t\tvalue === null\n\t\t\t|| typeof value === 'undefined'\n\t\t\t|| typeof value === 'boolean'\n\t\t\t|| typeof value === 'string'\n\t\t\t|| typeof value === 'number'\n\t\t\t|| typeof value === 'symbol'\n\t\t\t|| typeof value === 'function'\n\t\t) {\n\t\t\treturn false;\n\t\t}\n\t\tif (typeof value === 'bigint') {\n\t\t\treturn true;\n\t\t}\n\n\t\treturn tryBigInt(value);\n\t};\n} else {\n\tmodule.exports = function isBigInt(value) {\n\t\treturn false && value;\n\t};\n}\n","'use strict';\n\nvar callBound = require('call-bind/callBound');\nvar $boolToStr = callBound('Boolean.prototype.toString');\nvar $toString = callBound('Object.prototype.toString');\n\nvar tryBooleanObject = function booleanBrandCheck(value) {\n\ttry {\n\t\t$boolToStr(value);\n\t\treturn true;\n\t} catch (e) {\n\t\treturn false;\n\t}\n};\nvar boolClass = '[object Boolean]';\nvar hasToStringTag = require('has-tostringtag/shams')();\n\nmodule.exports = function isBoolean(value) {\n\tif (typeof value === 'boolean') {\n\t\treturn true;\n\t}\n\tif (value === null || typeof value !== 'object') {\n\t\treturn false;\n\t}\n\treturn hasToStringTag && Symbol.toStringTag in value ? tryBooleanObject(value) : $toString(value) === boolClass;\n};\n","'use strict';\n\nvar fnToStr = Function.prototype.toString;\nvar reflectApply = typeof Reflect === 'object' && Reflect !== null && Reflect.apply;\nvar badArrayLike;\nvar isCallableMarker;\nif (typeof reflectApply === 'function' && typeof Object.defineProperty === 'function') {\n\ttry {\n\t\tbadArrayLike = Object.defineProperty({}, 'length', {\n\t\t\tget: function () {\n\t\t\t\tthrow isCallableMarker;\n\t\t\t}\n\t\t});\n\t\tisCallableMarker = {};\n\t\t// eslint-disable-next-line no-throw-literal\n\t\treflectApply(function () { throw 42; }, null, badArrayLike);\n\t} catch (_) {\n\t\tif (_ !== isCallableMarker) {\n\t\t\treflectApply = null;\n\t\t}\n\t}\n} else {\n\treflectApply = null;\n}\n\nvar constructorRegex = /^\\s*class\\b/;\nvar isES6ClassFn = function isES6ClassFunction(value) {\n\ttry {\n\t\tvar fnStr = fnToStr.call(value);\n\t\treturn constructorRegex.test(fnStr);\n\t} catch (e) {\n\t\treturn false; // not a function\n\t}\n};\n\nvar tryFunctionObject = function tryFunctionToStr(value) {\n\ttry {\n\t\tif (isES6ClassFn(value)) { return false; }\n\t\tfnToStr.call(value);\n\t\treturn true;\n\t} catch (e) {\n\t\treturn false;\n\t}\n};\nvar toStr = Object.prototype.toString;\nvar fnClass = '[object Function]';\nvar genClass = '[object GeneratorFunction]';\nvar hasToStringTag = typeof Symbol === 'function' && !!Symbol.toStringTag; // better: use `has-tostringtag`\n/* globals document: false */\nvar documentDotAll = typeof document === 'object' && typeof document.all === 'undefined' && document.all !== undefined ? document.all : {};\n\nmodule.exports = reflectApply\n\t? function isCallable(value) {\n\t\tif (value === documentDotAll) { return true; }\n\t\tif (!value) { return false; }\n\t\tif (typeof value !== 'function' && typeof value !== 'object') { return false; }\n\t\tif (typeof value === 'function' && !value.prototype) { return true; }\n\t\ttry {\n\t\t\treflectApply(value, null, badArrayLike);\n\t\t} catch (e) {\n\t\t\tif (e !== isCallableMarker) { return false; }\n\t\t}\n\t\treturn !isES6ClassFn(value);\n\t}\n\t: function isCallable(value) {\n\t\tif (value === documentDotAll) { return true; }\n\t\tif (!value) { return false; }\n\t\tif (typeof value !== 'function' && typeof value !== 'object') { return false; }\n\t\tif (typeof value === 'function' && !value.prototype) { return true; }\n\t\tif (hasToStringTag) { return tryFunctionObject(value); }\n\t\tif (isES6ClassFn(value)) { return false; }\n\t\tvar strClass = toStr.call(value);\n\t\treturn strClass === fnClass || strClass === genClass;\n\t};\n","'use strict';\n\nvar getDay = Date.prototype.getDay;\nvar tryDateObject = function tryDateGetDayCall(value) {\n\ttry {\n\t\tgetDay.call(value);\n\t\treturn true;\n\t} catch (e) {\n\t\treturn false;\n\t}\n};\n\nvar toStr = Object.prototype.toString;\nvar dateClass = '[object Date]';\nvar hasToStringTag = require('has-tostringtag/shams')();\n\nmodule.exports = function isDateObject(value) {\n\tif (typeof value !== 'object' || value === null) {\n\t\treturn false;\n\t}\n\treturn hasToStringTag ? tryDateObject(value) : toStr.call(value) === dateClass;\n};\n","'use strict';\n\nvar $Map = typeof Map === 'function' && Map.prototype ? Map : null;\nvar $Set = typeof Set === 'function' && Set.prototype ? Set : null;\n\nvar exported;\n\nif (!$Map) {\n\t// eslint-disable-next-line no-unused-vars\n\texported = function isMap(x) {\n\t\t// `Map` is not present in this environment.\n\t\treturn false;\n\t};\n}\n\nvar $mapHas = $Map ? Map.prototype.has : null;\nvar $setHas = $Set ? Set.prototype.has : null;\nif (!exported && !$mapHas) {\n\t// eslint-disable-next-line no-unused-vars\n\texported = function isMap(x) {\n\t\t// `Map` does not have a `has` method\n\t\treturn false;\n\t};\n}\n\nmodule.exports = exported || function isMap(x) {\n\tif (!x || typeof x !== 'object') {\n\t\treturn false;\n\t}\n\ttry {\n\t\t$mapHas.call(x);\n\t\tif ($setHas) {\n\t\t\ttry {\n\t\t\t\t$setHas.call(x);\n\t\t\t} catch (e) {\n\t\t\t\treturn true;\n\t\t\t}\n\t\t}\n\t\treturn x instanceof $Map; // core-js workaround, pre-v2.5.0\n\t} catch (e) {}\n\treturn false;\n};\n","'use strict';\n\nvar numToStr = Number.prototype.toString;\nvar tryNumberObject = function tryNumberObject(value) {\n\ttry {\n\t\tnumToStr.call(value);\n\t\treturn true;\n\t} catch (e) {\n\t\treturn false;\n\t}\n};\nvar toStr = Object.prototype.toString;\nvar numClass = '[object Number]';\nvar hasToStringTag = require('has-tostringtag/shams')();\n\nmodule.exports = function isNumberObject(value) {\n\tif (typeof value === 'number') {\n\t\treturn true;\n\t}\n\tif (typeof value !== 'object') {\n\t\treturn false;\n\t}\n\treturn hasToStringTag ? tryNumberObject(value) : toStr.call(value) === numClass;\n};\n","'use strict';\n\nvar callBound = require('call-bind/callBound');\nvar hasToStringTag = require('has-tostringtag/shams')();\nvar has;\nvar $exec;\nvar isRegexMarker;\nvar badStringifier;\n\nif (hasToStringTag) {\n\thas = callBound('Object.prototype.hasOwnProperty');\n\t$exec = callBound('RegExp.prototype.exec');\n\tisRegexMarker = {};\n\n\tvar throwRegexMarker = function () {\n\t\tthrow isRegexMarker;\n\t};\n\tbadStringifier = {\n\t\ttoString: throwRegexMarker,\n\t\tvalueOf: throwRegexMarker\n\t};\n\n\tif (typeof Symbol.toPrimitive === 'symbol') {\n\t\tbadStringifier[Symbol.toPrimitive] = throwRegexMarker;\n\t}\n}\n\nvar $toString = callBound('Object.prototype.toString');\nvar gOPD = Object.getOwnPropertyDescriptor;\nvar regexClass = '[object RegExp]';\n\nmodule.exports = hasToStringTag\n\t// eslint-disable-next-line consistent-return\n\t? function isRegex(value) {\n\t\tif (!value || typeof value !== 'object') {\n\t\t\treturn false;\n\t\t}\n\n\t\tvar descriptor = gOPD(value, 'lastIndex');\n\t\tvar hasLastIndexDataProperty = descriptor && has(descriptor, 'value');\n\t\tif (!hasLastIndexDataProperty) {\n\t\t\treturn false;\n\t\t}\n\n\t\ttry {\n\t\t\t$exec(value, badStringifier);\n\t\t} catch (e) {\n\t\t\treturn e === isRegexMarker;\n\t\t}\n\t}\n\t: function isRegex(value) {\n\t\t// In older browsers, typeof regex incorrectly returns 'function'\n\t\tif (!value || (typeof value !== 'object' && typeof value !== 'function')) {\n\t\t\treturn false;\n\t\t}\n\n\t\treturn $toString(value) === regexClass;\n\t};\n","'use strict';\n\nvar $Map = typeof Map === 'function' && Map.prototype ? Map : null;\nvar $Set = typeof Set === 'function' && Set.prototype ? Set : null;\n\nvar exported;\n\nif (!$Set) {\n\t// eslint-disable-next-line no-unused-vars\n\texported = function isSet(x) {\n\t\t// `Set` is not present in this environment.\n\t\treturn false;\n\t};\n}\n\nvar $mapHas = $Map ? Map.prototype.has : null;\nvar $setHas = $Set ? Set.prototype.has : null;\nif (!exported && !$setHas) {\n\t// eslint-disable-next-line no-unused-vars\n\texported = function isSet(x) {\n\t\t// `Set` does not have a `has` method\n\t\treturn false;\n\t};\n}\n\nmodule.exports = exported || function isSet(x) {\n\tif (!x || typeof x !== 'object') {\n\t\treturn false;\n\t}\n\ttry {\n\t\t$setHas.call(x);\n\t\tif ($mapHas) {\n\t\t\ttry {\n\t\t\t\t$mapHas.call(x);\n\t\t\t} catch (e) {\n\t\t\t\treturn true;\n\t\t\t}\n\t\t}\n\t\treturn x instanceof $Set; // core-js workaround, pre-v2.5.0\n\t} catch (e) {}\n\treturn false;\n};\n","'use strict';\n\nvar strValue = String.prototype.valueOf;\nvar tryStringObject = function tryStringObject(value) {\n\ttry {\n\t\tstrValue.call(value);\n\t\treturn true;\n\t} catch (e) {\n\t\treturn false;\n\t}\n};\nvar toStr = Object.prototype.toString;\nvar strClass = '[object String]';\nvar hasToStringTag = require('has-tostringtag/shams')();\n\nmodule.exports = function isString(value) {\n\tif (typeof value === 'string') {\n\t\treturn true;\n\t}\n\tif (typeof value !== 'object') {\n\t\treturn false;\n\t}\n\treturn hasToStringTag ? tryStringObject(value) : toStr.call(value) === strClass;\n};\n","'use strict';\n\nvar toStr = Object.prototype.toString;\nvar hasSymbols = require('has-symbols')();\n\nif (hasSymbols) {\n\tvar symToStr = Symbol.prototype.toString;\n\tvar symStringRegex = /^Symbol\\(.*\\)$/;\n\tvar isSymbolObject = function isRealSymbolObject(value) {\n\t\tif (typeof value.valueOf() !== 'symbol') {\n\t\t\treturn false;\n\t\t}\n\t\treturn symStringRegex.test(symToStr.call(value));\n\t};\n\n\tmodule.exports = function isSymbol(value) {\n\t\tif (typeof value === 'symbol') {\n\t\t\treturn true;\n\t\t}\n\t\tif (toStr.call(value) !== '[object Symbol]') {\n\t\t\treturn false;\n\t\t}\n\t\ttry {\n\t\t\treturn isSymbolObject(value);\n\t\t} catch (e) {\n\t\t\treturn false;\n\t\t}\n\t};\n} else {\n\n\tmodule.exports = function isSymbol(value) {\n\t\t// this environment does not support Symbols.\n\t\treturn false && value;\n\t};\n}\n","'use strict';\n\nvar forEach = require('foreach');\nvar availableTypedArrays = require('available-typed-arrays');\nvar callBound = require('call-bind/callBound');\n\nvar $toString = callBound('Object.prototype.toString');\nvar hasToStringTag = require('has-tostringtag/shams')();\n\nvar g = typeof globalThis === 'undefined' ? global : globalThis;\nvar typedArrays = availableTypedArrays();\n\nvar $indexOf = callBound('Array.prototype.indexOf', true) || function indexOf(array, value) {\n\tfor (var i = 0; i < array.length; i += 1) {\n\t\tif (array[i] === value) {\n\t\t\treturn i;\n\t\t}\n\t}\n\treturn -1;\n};\nvar $slice = callBound('String.prototype.slice');\nvar toStrTags = {};\nvar gOPD = require('es-abstract/helpers/getOwnPropertyDescriptor');\nvar getPrototypeOf = Object.getPrototypeOf; // require('getprototypeof');\nif (hasToStringTag && gOPD && getPrototypeOf) {\n\tforEach(typedArrays, function (typedArray) {\n\t\tvar arr = new g[typedArray]();\n\t\tif (Symbol.toStringTag in arr) {\n\t\t\tvar proto = getPrototypeOf(arr);\n\t\t\tvar descriptor = gOPD(proto, Symbol.toStringTag);\n\t\t\tif (!descriptor) {\n\t\t\t\tvar superProto = getPrototypeOf(proto);\n\t\t\t\tdescriptor = gOPD(superProto, Symbol.toStringTag);\n\t\t\t}\n\t\t\ttoStrTags[typedArray] = descriptor.get;\n\t\t}\n\t});\n}\n\nvar tryTypedArrays = function tryAllTypedArrays(value) {\n\tvar anyTrue = false;\n\tforEach(toStrTags, function (getter, typedArray) {\n\t\tif (!anyTrue) {\n\t\t\ttry {\n\t\t\t\tanyTrue = getter.call(value) === typedArray;\n\t\t\t} catch (e) { /**/ }\n\t\t}\n\t});\n\treturn anyTrue;\n};\n\nmodule.exports = function isTypedArray(value) {\n\tif (!value || typeof value !== 'object') { return false; }\n\tif (!hasToStringTag || !(Symbol.toStringTag in value)) {\n\t\tvar tag = $slice($toString(value), 8, -1);\n\t\treturn $indexOf(typedArrays, tag) > -1;\n\t}\n\tif (!gOPD) { return false; }\n\treturn tryTypedArrays(value);\n};\n","'use strict';\n\nvar $WeakMap = typeof WeakMap === 'function' && WeakMap.prototype ? WeakMap : null;\nvar $WeakSet = typeof WeakSet === 'function' && WeakSet.prototype ? WeakSet : null;\n\nvar exported;\n\nif (!$WeakMap) {\n\t// eslint-disable-next-line no-unused-vars\n\texported = function isWeakMap(x) {\n\t\t// `WeakMap` is not present in this environment.\n\t\treturn false;\n\t};\n}\n\nvar $mapHas = $WeakMap ? $WeakMap.prototype.has : null;\nvar $setHas = $WeakSet ? $WeakSet.prototype.has : null;\nif (!exported && !$mapHas) {\n\t// eslint-disable-next-line no-unused-vars\n\texported = function isWeakMap(x) {\n\t\t// `WeakMap` does not have a `has` method\n\t\treturn false;\n\t};\n}\n\nmodule.exports = exported || function isWeakMap(x) {\n\tif (!x || typeof x !== 'object') {\n\t\treturn false;\n\t}\n\ttry {\n\t\t$mapHas.call(x, $mapHas);\n\t\tif ($setHas) {\n\t\t\ttry {\n\t\t\t\t$setHas.call(x, $setHas);\n\t\t\t} catch (e) {\n\t\t\t\treturn true;\n\t\t\t}\n\t\t}\n\t\treturn x instanceof $WeakMap; // core-js workaround, pre-v3\n\t} catch (e) {}\n\treturn false;\n};\n","'use strict';\n\nvar GetIntrinsic = require('get-intrinsic');\nvar callBound = require('call-bind/callBound');\n\nvar $WeakSet = GetIntrinsic('%WeakSet%', true);\n\nvar $setHas = callBound('WeakSet.prototype.has', true);\n\nif ($setHas) {\n\tvar $mapHas = callBound('WeakMap.prototype.has', true);\n\n\tmodule.exports = function isWeakSet(x) {\n\t\tif (!x || typeof x !== 'object') {\n\t\t\treturn false;\n\t\t}\n\t\ttry {\n\t\t\t$setHas(x, $setHas);\n\t\t\tif ($mapHas) {\n\t\t\t\ttry {\n\t\t\t\t\t$mapHas(x, $mapHas);\n\t\t\t\t} catch (e) {\n\t\t\t\t\treturn true;\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn x instanceof $WeakSet; // core-js workaround, pre-v3\n\t\t} catch (e) {}\n\t\treturn false;\n\t};\n} else {\n\t// eslint-disable-next-line no-unused-vars\n\tmodule.exports = function isWeakSet(x) {\n\t\t// `WeakSet` does not exist, or does not have a `has` method\n\t\treturn false;\n\t};\n}\n","'use strict';\n\nvar has = require('has');\nvar hasPropertyDescriptors = require('has-property-descriptors');\nvar isArray = require('isarray');\nvar functionsHaveConfigurableNames = require('functions-have-names').functionsHaveConfigurableNames();\n\nvar $defineProperty = hasPropertyDescriptors() && Object.defineProperty;\n\nvar hasArrayLengthDefineBug = hasPropertyDescriptors.hasArrayLengthDefineBug();\n\nvar gOPD = Object.getOwnPropertyDescriptor;\n\nvar $TypeError = TypeError;\nvar $SyntaxError = SyntaxError;\n\nmodule.exports = function mockProperty(obj, prop, options) {\n\tif (has(options, 'nonEnumerable') && typeof options.nonEnumerable !== 'boolean') {\n\t\tthrow new $TypeError('`nonEnumerable` option, when present, must be a boolean');\n\t}\n\tif (has(options, 'nonWritable') && typeof options.nonWritable !== 'boolean') {\n\t\tthrow new $TypeError('`nonEnumerable` option, when present, must be a boolean');\n\t}\n\tif (has(options, 'delete') && typeof options['delete'] !== 'boolean') {\n\t\tthrow new $TypeError('`delete` option, when present, must be a boolean');\n\t}\n\n\tvar wantsData = has(options, 'value') || has(options, 'nonWritable');\n\tvar wantsAccessor = has(options, 'get') || has(options, 'set');\n\n\tif (wantsAccessor) {\n\t\tif (wantsData) {\n\t\t\tthrow new $TypeError('`value` and `nonWritable` options are mutually exclusive with `get`/`set` options');\n\t\t}\n\t\tif (\n\t\t\t(has(options, 'get') && typeof options.get !== 'function' && typeof options.get !== 'undefined')\n            || (has(options, 'set') && typeof options.set !== 'function' && typeof options.set !== 'undefined')\n\t\t) {\n\t\t\tthrow new $TypeError('`get` and `set` options, when present, must be functions or `undefined`');\n\t\t}\n\t\tif (!gOPD || !$defineProperty) {\n\t\t\tthrow new $SyntaxError('the `get`/`set` options require native getter/setter support');\n\t\t}\n\t}\n\tif (options['delete'] && (wantsData || wantsAccessor || has(options, 'nonEnumerable'))) {\n\t\tthrow new $TypeError('`delete` option must not be set to true when any of `value`, `get`, `set`, `nonWritable`, or `nonEnumerable` are provided');\n\t}\n\n\tvar objIsArray = isArray(obj);\n\tvar origDescriptor = gOPD\n\t\t? gOPD(obj, prop)\n\t\t: {\n\t\t\tconfigurable: typeof obj === 'function' && prop === 'name' ? functionsHaveConfigurableNames : true,\n\t\t\tenumerable: !(objIsArray && prop === 'length'),\n\t\t\tvalue: obj[prop],\n\t\t\twritable: true\n\t\t};\n\n\tvar origConfigurable = origDescriptor ? origDescriptor.configurable : true;\n\tvar origEnumerable = origDescriptor ? origDescriptor.enumerable : true;\n\n\tif (wantsAccessor) {\n\t\tvar hasGetter = origDescriptor && typeof origDescriptor.get === 'function';\n\t\tvar hasSetter = origDescriptor && typeof origDescriptor.set === 'function';\n\t\tvar hasFutureGetter = has(options, 'get') ? typeof options.get === 'function' : hasGetter;\n\t\tvar hasFutureSetter = has(options, 'set') ? typeof options.set === 'function' : hasSetter;\n\t\tif (!hasFutureGetter && !hasFutureSetter) {\n\t\t\tthrow new $TypeError('when the `get` or `set` options are provided, the mocked object property must end up with at least one of a getter or a setter function');\n\t\t}\n\t}\n\n\tvar isChangingEnumerability = has(options, 'nonEnumerable') ? !options.nonEnumerable !== origEnumerable : false;\n\tif (origDescriptor && !origDescriptor.configurable) {\n\t\tif (isChangingEnumerability) {\n\t\t\tthrow new $TypeError('`' + prop + '` is nonconfigurable, and can not be changed');\n\t\t}\n\t\tif (wantsAccessor) {\n\t\t\tif (has(origDescriptor, 'value')) {\n\t\t\t\tthrow new $TypeError('`' + prop + '` is a nonconfigurable data property, and can not be changed to an accessor');\n\t\t\t}\n\n\t\t\tvar isChangingGetter = has(options, 'get') && has(origDescriptor, 'get') && options.get !== origDescriptor.get;\n\t\t\tvar isChangingSetter = has(options, 'set') && has(origDescriptor, 'set') && options.set !== origDescriptor.set;\n\n\t\t\tif (isChangingGetter || isChangingSetter) {\n\t\t\t\tthrow new $TypeError('`' + prop + '` is nonconfigurable, and can not be changed');\n\t\t\t}\n\t\t\treturn function restore() {};\n\t\t}\n\t\tif (has(origDescriptor, 'get') || has(origDescriptor, 'set')) {\n\t\t\tthrow new $TypeError('`' + prop + '` is a nonconfigurable accessor property, and can not be changed to a data property');\n\t\t}\n\n\t\tvar isChangingValue = has(options, 'value') && has(origDescriptor, 'value') && options.value !== origDescriptor.value;\n\t\tvar isChangingWriteability = has(options, 'nonWritable') && !options.nonWritable !== origDescriptor.writable;\n\n\t\tif ((!origDescriptor.writable && isChangingValue) || isChangingEnumerability || isChangingWriteability) {\n\t\t\tthrow new $TypeError('`' + prop + '` is nonconfigurable, and can not be changed');\n\t\t}\n\t\tif (!isChangingWriteability && !isChangingValue) {\n\t\t\treturn function restore() {};\n\t\t}\n\t}\n\n\tif (options['delete']) {\n\t\tdelete obj[prop]; // eslint-disable-line no-param-reassign\n\t} else if (\n\t\twantsData\n            && !isChangingEnumerability\n            && (!origDescriptor || origDescriptor.enumerable)\n            && (!has(options, 'nonWritable') || !options.nonWritable)\n            && (!origDescriptor || origDescriptor.writable)\n            && (!gOPD || !(prop in obj))\n\t) {\n\t\tobj[prop] = options.value; // eslint-disable-line no-param-reassign\n\t} else {\n\t\tif (objIsArray && prop === 'length' && hasArrayLengthDefineBug) {\n\t\t\tthrow new $SyntaxError('this environment does not support Define on an array’s length');\n\t\t}\n\n\t\tvar newEnumerable = has(options, 'nonEnumerable') ? !options.nonEnumerable : origEnumerable;\n\n\t\tif (wantsData) {\n\t\t\t$defineProperty(obj, prop, {\n\t\t\t\tconfigurable: origConfigurable,\n\t\t\t\tenumerable: newEnumerable,\n\t\t\t\tvalue: has(options, 'value') ? options.value : origDescriptor.value,\n\t\t\t\twritable: has(options, 'nonWritable') ? !options.nonWritable : has(origDescriptor, 'writable') ? origDescriptor.writable : true\n\t\t\t});\n\t\t} else if (wantsAccessor) {\n\t\t\tvar getter = has(options, 'get') ? options.get : origDescriptor && origDescriptor.get;\n\t\t\tvar setter = has(options, 'set') ? options.set : origDescriptor && origDescriptor.set;\n\n\t\t\t$defineProperty(obj, prop, {\n\t\t\t\tconfigurable: origConfigurable,\n\t\t\t\tenumerable: newEnumerable,\n\t\t\t\tget: getter,\n\t\t\t\tset: setter\n\t\t\t});\n\t\t} else {\n\t\t\t$defineProperty(obj, prop, {\n\t\t\t\tconfigurable: origConfigurable,\n\t\t\t\tenumerable: newEnumerable\n\t\t\t});\n\t\t}\n\t}\n\n\treturn function restore() {\n\t\tif (!origDescriptor) {\n\t\t\tdelete obj[prop]; // eslint-disable-line no-param-reassign\n\t\t} else if ($defineProperty) {\n\t\t\tif (has(origDescriptor, 'writable')) {\n\t\t\t\t$defineProperty(obj, prop, {\n\t\t\t\t\tconfigurable: origDescriptor.configurable,\n\t\t\t\t\tenumerable: origDescriptor.enumerable,\n\t\t\t\t\tvalue: origDescriptor.value,\n\t\t\t\t\twritable: origDescriptor.writable\n\t\t\t\t});\n\t\t\t} else {\n\t\t\t\tvar oldGetter = origDescriptor && origDescriptor.get;\n\t\t\t\tvar oldSetter = origDescriptor && origDescriptor.set;\n\n\t\t\t\t$defineProperty(obj, prop, {\n\t\t\t\t\tconfigurable: origDescriptor.configurable,\n\t\t\t\t\tenumerable: origDescriptor.enumerable,\n\t\t\t\t\tget: oldGetter,\n\t\t\t\t\tset: oldSetter\n\t\t\t\t});\n\t\t\t}\n\t\t} else {\n\t\t\tobj[prop] = origDescriptor.value; // eslint-disable-line no-param-reassign\n\t\t}\n\t};\n};\n","var hasMap = typeof Map === 'function' && Map.prototype;\nvar mapSizeDescriptor = Object.getOwnPropertyDescriptor && hasMap ? Object.getOwnPropertyDescriptor(Map.prototype, 'size') : null;\nvar mapSize = hasMap && mapSizeDescriptor && typeof mapSizeDescriptor.get === 'function' ? mapSizeDescriptor.get : null;\nvar mapForEach = hasMap && Map.prototype.forEach;\nvar hasSet = typeof Set === 'function' && Set.prototype;\nvar setSizeDescriptor = Object.getOwnPropertyDescriptor && hasSet ? Object.getOwnPropertyDescriptor(Set.prototype, 'size') : null;\nvar setSize = hasSet && setSizeDescriptor && typeof setSizeDescriptor.get === 'function' ? setSizeDescriptor.get : null;\nvar setForEach = hasSet && Set.prototype.forEach;\nvar hasWeakMap = typeof WeakMap === 'function' && WeakMap.prototype;\nvar weakMapHas = hasWeakMap ? WeakMap.prototype.has : null;\nvar hasWeakSet = typeof WeakSet === 'function' && WeakSet.prototype;\nvar weakSetHas = hasWeakSet ? WeakSet.prototype.has : null;\nvar hasWeakRef = typeof WeakRef === 'function' && WeakRef.prototype;\nvar weakRefDeref = hasWeakRef ? WeakRef.prototype.deref : null;\nvar booleanValueOf = Boolean.prototype.valueOf;\nvar objectToString = Object.prototype.toString;\nvar functionToString = Function.prototype.toString;\nvar $match = String.prototype.match;\nvar $slice = String.prototype.slice;\nvar $replace = String.prototype.replace;\nvar $toUpperCase = String.prototype.toUpperCase;\nvar $toLowerCase = String.prototype.toLowerCase;\nvar $test = RegExp.prototype.test;\nvar $concat = Array.prototype.concat;\nvar $join = Array.prototype.join;\nvar $arrSlice = Array.prototype.slice;\nvar $floor = Math.floor;\nvar bigIntValueOf = typeof BigInt === 'function' ? BigInt.prototype.valueOf : null;\nvar gOPS = Object.getOwnPropertySymbols;\nvar symToString = typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol' ? Symbol.prototype.toString : null;\nvar hasShammedSymbols = typeof Symbol === 'function' && typeof Symbol.iterator === 'object';\n// ie, `has-tostringtag/shams\nvar toStringTag = typeof Symbol === 'function' && Symbol.toStringTag && (typeof Symbol.toStringTag === hasShammedSymbols ? 'object' : 'symbol')\n    ? Symbol.toStringTag\n    : null;\nvar isEnumerable = Object.prototype.propertyIsEnumerable;\n\nvar gPO = (typeof Reflect === 'function' ? Reflect.getPrototypeOf : Object.getPrototypeOf) || (\n    [].__proto__ === Array.prototype // eslint-disable-line no-proto\n        ? function (O) {\n            return O.__proto__; // eslint-disable-line no-proto\n        }\n        : null\n);\n\nfunction addNumericSeparator(num, str) {\n    if (\n        num === Infinity\n        || num === -Infinity\n        || num !== num\n        || (num && num > -1000 && num < 1000)\n        || $test.call(/e/, str)\n    ) {\n        return str;\n    }\n    var sepRegex = /[0-9](?=(?:[0-9]{3})+(?![0-9]))/g;\n    if (typeof num === 'number') {\n        var int = num < 0 ? -$floor(-num) : $floor(num); // trunc(num)\n        if (int !== num) {\n            var intStr = String(int);\n            var dec = $slice.call(str, intStr.length + 1);\n            return $replace.call(intStr, sepRegex, '$&_') + '.' + $replace.call($replace.call(dec, /([0-9]{3})/g, '$&_'), /_$/, '');\n        }\n    }\n    return $replace.call(str, sepRegex, '$&_');\n}\n\nvar inspectCustom = require('./util.inspect').custom;\nvar inspectSymbol = inspectCustom && isSymbol(inspectCustom) ? inspectCustom : null;\n\nmodule.exports = function inspect_(obj, options, depth, seen) {\n    var opts = options || {};\n\n    if (has(opts, 'quoteStyle') && (opts.quoteStyle !== 'single' && opts.quoteStyle !== 'double')) {\n        throw new TypeError('option \"quoteStyle\" must be \"single\" or \"double\"');\n    }\n    if (\n        has(opts, 'maxStringLength') && (typeof opts.maxStringLength === 'number'\n            ? opts.maxStringLength < 0 && opts.maxStringLength !== Infinity\n            : opts.maxStringLength !== null\n        )\n    ) {\n        throw new TypeError('option \"maxStringLength\", if provided, must be a positive integer, Infinity, or `null`');\n    }\n    var customInspect = has(opts, 'customInspect') ? opts.customInspect : true;\n    if (typeof customInspect !== 'boolean' && customInspect !== 'symbol') {\n        throw new TypeError('option \"customInspect\", if provided, must be `true`, `false`, or `\\'symbol\\'`');\n    }\n\n    if (\n        has(opts, 'indent')\n        && opts.indent !== null\n        && opts.indent !== '\\t'\n        && !(parseInt(opts.indent, 10) === opts.indent && opts.indent > 0)\n    ) {\n        throw new TypeError('option \"indent\" must be \"\\\\t\", an integer > 0, or `null`');\n    }\n    if (has(opts, 'numericSeparator') && typeof opts.numericSeparator !== 'boolean') {\n        throw new TypeError('option \"numericSeparator\", if provided, must be `true` or `false`');\n    }\n    var numericSeparator = opts.numericSeparator;\n\n    if (typeof obj === 'undefined') {\n        return 'undefined';\n    }\n    if (obj === null) {\n        return 'null';\n    }\n    if (typeof obj === 'boolean') {\n        return obj ? 'true' : 'false';\n    }\n\n    if (typeof obj === 'string') {\n        return inspectString(obj, opts);\n    }\n    if (typeof obj === 'number') {\n        if (obj === 0) {\n            return Infinity / obj > 0 ? '0' : '-0';\n        }\n        var str = String(obj);\n        return numericSeparator ? addNumericSeparator(obj, str) : str;\n    }\n    if (typeof obj === 'bigint') {\n        var bigIntStr = String(obj) + 'n';\n        return numericSeparator ? addNumericSeparator(obj, bigIntStr) : bigIntStr;\n    }\n\n    var maxDepth = typeof opts.depth === 'undefined' ? 5 : opts.depth;\n    if (typeof depth === 'undefined') { depth = 0; }\n    if (depth >= maxDepth && maxDepth > 0 && typeof obj === 'object') {\n        return isArray(obj) ? '[Array]' : '[Object]';\n    }\n\n    var indent = getIndent(opts, depth);\n\n    if (typeof seen === 'undefined') {\n        seen = [];\n    } else if (indexOf(seen, obj) >= 0) {\n        return '[Circular]';\n    }\n\n    function inspect(value, from, noIndent) {\n        if (from) {\n            seen = $arrSlice.call(seen);\n            seen.push(from);\n        }\n        if (noIndent) {\n            var newOpts = {\n                depth: opts.depth\n            };\n            if (has(opts, 'quoteStyle')) {\n                newOpts.quoteStyle = opts.quoteStyle;\n            }\n            return inspect_(value, newOpts, depth + 1, seen);\n        }\n        return inspect_(value, opts, depth + 1, seen);\n    }\n\n    if (typeof obj === 'function') {\n        var name = nameOf(obj);\n        var keys = arrObjKeys(obj, inspect);\n        return '[Function' + (name ? ': ' + name : ' (anonymous)') + ']' + (keys.length > 0 ? ' { ' + $join.call(keys, ', ') + ' }' : '');\n    }\n    if (isSymbol(obj)) {\n        var symString = hasShammedSymbols ? $replace.call(String(obj), /^(Symbol\\(.*\\))_[^)]*$/, '$1') : symToString.call(obj);\n        return typeof obj === 'object' && !hasShammedSymbols ? markBoxed(symString) : symString;\n    }\n    if (isElement(obj)) {\n        var s = '<' + $toLowerCase.call(String(obj.nodeName));\n        var attrs = obj.attributes || [];\n        for (var i = 0; i < attrs.length; i++) {\n            s += ' ' + attrs[i].name + '=' + wrapQuotes(quote(attrs[i].value), 'double', opts);\n        }\n        s += '>';\n        if (obj.childNodes && obj.childNodes.length) { s += '...'; }\n        s += '</' + $toLowerCase.call(String(obj.nodeName)) + '>';\n        return s;\n    }\n    if (isArray(obj)) {\n        if (obj.length === 0) { return '[]'; }\n        var xs = arrObjKeys(obj, inspect);\n        if (indent && !singleLineValues(xs)) {\n            return '[' + indentedJoin(xs, indent) + ']';\n        }\n        return '[ ' + $join.call(xs, ', ') + ' ]';\n    }\n    if (isError(obj)) {\n        var parts = arrObjKeys(obj, inspect);\n        if ('cause' in obj && !isEnumerable.call(obj, 'cause')) {\n            return '{ [' + String(obj) + '] ' + $join.call($concat.call('[cause]: ' + inspect(obj.cause), parts), ', ') + ' }';\n        }\n        if (parts.length === 0) { return '[' + String(obj) + ']'; }\n        return '{ [' + String(obj) + '] ' + $join.call(parts, ', ') + ' }';\n    }\n    if (typeof obj === 'object' && customInspect) {\n        if (inspectSymbol && typeof obj[inspectSymbol] === 'function') {\n            return obj[inspectSymbol]();\n        } else if (customInspect !== 'symbol' && typeof obj.inspect === 'function') {\n            return obj.inspect();\n        }\n    }\n    if (isMap(obj)) {\n        var mapParts = [];\n        mapForEach.call(obj, function (value, key) {\n            mapParts.push(inspect(key, obj, true) + ' => ' + inspect(value, obj));\n        });\n        return collectionOf('Map', mapSize.call(obj), mapParts, indent);\n    }\n    if (isSet(obj)) {\n        var setParts = [];\n        setForEach.call(obj, function (value) {\n            setParts.push(inspect(value, obj));\n        });\n        return collectionOf('Set', setSize.call(obj), setParts, indent);\n    }\n    if (isWeakMap(obj)) {\n        return weakCollectionOf('WeakMap');\n    }\n    if (isWeakSet(obj)) {\n        return weakCollectionOf('WeakSet');\n    }\n    if (isWeakRef(obj)) {\n        return weakCollectionOf('WeakRef');\n    }\n    if (isNumber(obj)) {\n        return markBoxed(inspect(Number(obj)));\n    }\n    if (isBigInt(obj)) {\n        return markBoxed(inspect(bigIntValueOf.call(obj)));\n    }\n    if (isBoolean(obj)) {\n        return markBoxed(booleanValueOf.call(obj));\n    }\n    if (isString(obj)) {\n        return markBoxed(inspect(String(obj)));\n    }\n    if (!isDate(obj) && !isRegExp(obj)) {\n        var ys = arrObjKeys(obj, inspect);\n        var isPlainObject = gPO ? gPO(obj) === Object.prototype : obj instanceof Object || obj.constructor === Object;\n        var protoTag = obj instanceof Object ? '' : 'null prototype';\n        var stringTag = !isPlainObject && toStringTag && Object(obj) === obj && toStringTag in obj ? $slice.call(toStr(obj), 8, -1) : protoTag ? 'Object' : '';\n        var constructorTag = isPlainObject || typeof obj.constructor !== 'function' ? '' : obj.constructor.name ? obj.constructor.name + ' ' : '';\n        var tag = constructorTag + (stringTag || protoTag ? '[' + $join.call($concat.call([], stringTag || [], protoTag || []), ': ') + '] ' : '');\n        if (ys.length === 0) { return tag + '{}'; }\n        if (indent) {\n            return tag + '{' + indentedJoin(ys, indent) + '}';\n        }\n        return tag + '{ ' + $join.call(ys, ', ') + ' }';\n    }\n    return String(obj);\n};\n\nfunction wrapQuotes(s, defaultStyle, opts) {\n    var quoteChar = (opts.quoteStyle || defaultStyle) === 'double' ? '\"' : \"'\";\n    return quoteChar + s + quoteChar;\n}\n\nfunction quote(s) {\n    return $replace.call(String(s), /\"/g, '&quot;');\n}\n\nfunction isArray(obj) { return toStr(obj) === '[object Array]' && (!toStringTag || !(typeof obj === 'object' && toStringTag in obj)); }\nfunction isDate(obj) { return toStr(obj) === '[object Date]' && (!toStringTag || !(typeof obj === 'object' && toStringTag in obj)); }\nfunction isRegExp(obj) { return toStr(obj) === '[object RegExp]' && (!toStringTag || !(typeof obj === 'object' && toStringTag in obj)); }\nfunction isError(obj) { return toStr(obj) === '[object Error]' && (!toStringTag || !(typeof obj === 'object' && toStringTag in obj)); }\nfunction isString(obj) { return toStr(obj) === '[object String]' && (!toStringTag || !(typeof obj === 'object' && toStringTag in obj)); }\nfunction isNumber(obj) { return toStr(obj) === '[object Number]' && (!toStringTag || !(typeof obj === 'object' && toStringTag in obj)); }\nfunction isBoolean(obj) { return toStr(obj) === '[object Boolean]' && (!toStringTag || !(typeof obj === 'object' && toStringTag in obj)); }\n\n// Symbol and BigInt do have Symbol.toStringTag by spec, so that can't be used to eliminate false positives\nfunction isSymbol(obj) {\n    if (hasShammedSymbols) {\n        return obj && typeof obj === 'object' && obj instanceof Symbol;\n    }\n    if (typeof obj === 'symbol') {\n        return true;\n    }\n    if (!obj || typeof obj !== 'object' || !symToString) {\n        return false;\n    }\n    try {\n        symToString.call(obj);\n        return true;\n    } catch (e) {}\n    return false;\n}\n\nfunction isBigInt(obj) {\n    if (!obj || typeof obj !== 'object' || !bigIntValueOf) {\n        return false;\n    }\n    try {\n        bigIntValueOf.call(obj);\n        return true;\n    } catch (e) {}\n    return false;\n}\n\nvar hasOwn = Object.prototype.hasOwnProperty || function (key) { return key in this; };\nfunction has(obj, key) {\n    return hasOwn.call(obj, key);\n}\n\nfunction toStr(obj) {\n    return objectToString.call(obj);\n}\n\nfunction nameOf(f) {\n    if (f.name) { return f.name; }\n    var m = $match.call(functionToString.call(f), /^function\\s*([\\w$]+)/);\n    if (m) { return m[1]; }\n    return null;\n}\n\nfunction indexOf(xs, x) {\n    if (xs.indexOf) { return xs.indexOf(x); }\n    for (var i = 0, l = xs.length; i < l; i++) {\n        if (xs[i] === x) { return i; }\n    }\n    return -1;\n}\n\nfunction isMap(x) {\n    if (!mapSize || !x || typeof x !== 'object') {\n        return false;\n    }\n    try {\n        mapSize.call(x);\n        try {\n            setSize.call(x);\n        } catch (s) {\n            return true;\n        }\n        return x instanceof Map; // core-js workaround, pre-v2.5.0\n    } catch (e) {}\n    return false;\n}\n\nfunction isWeakMap(x) {\n    if (!weakMapHas || !x || typeof x !== 'object') {\n        return false;\n    }\n    try {\n        weakMapHas.call(x, weakMapHas);\n        try {\n            weakSetHas.call(x, weakSetHas);\n        } catch (s) {\n            return true;\n        }\n        return x instanceof WeakMap; // core-js workaround, pre-v2.5.0\n    } catch (e) {}\n    return false;\n}\n\nfunction isWeakRef(x) {\n    if (!weakRefDeref || !x || typeof x !== 'object') {\n        return false;\n    }\n    try {\n        weakRefDeref.call(x);\n        return true;\n    } catch (e) {}\n    return false;\n}\n\nfunction isSet(x) {\n    if (!setSize || !x || typeof x !== 'object') {\n        return false;\n    }\n    try {\n        setSize.call(x);\n        try {\n            mapSize.call(x);\n        } catch (m) {\n            return true;\n        }\n        return x instanceof Set; // core-js workaround, pre-v2.5.0\n    } catch (e) {}\n    return false;\n}\n\nfunction isWeakSet(x) {\n    if (!weakSetHas || !x || typeof x !== 'object') {\n        return false;\n    }\n    try {\n        weakSetHas.call(x, weakSetHas);\n        try {\n            weakMapHas.call(x, weakMapHas);\n        } catch (s) {\n            return true;\n        }\n        return x instanceof WeakSet; // core-js workaround, pre-v2.5.0\n    } catch (e) {}\n    return false;\n}\n\nfunction isElement(x) {\n    if (!x || typeof x !== 'object') { return false; }\n    if (typeof HTMLElement !== 'undefined' && x instanceof HTMLElement) {\n        return true;\n    }\n    return typeof x.nodeName === 'string' && typeof x.getAttribute === 'function';\n}\n\nfunction inspectString(str, opts) {\n    if (str.length > opts.maxStringLength) {\n        var remaining = str.length - opts.maxStringLength;\n        var trailer = '... ' + remaining + ' more character' + (remaining > 1 ? 's' : '');\n        return inspectString($slice.call(str, 0, opts.maxStringLength), opts) + trailer;\n    }\n    // eslint-disable-next-line no-control-regex\n    var s = $replace.call($replace.call(str, /(['\\\\])/g, '\\\\$1'), /[\\x00-\\x1f]/g, lowbyte);\n    return wrapQuotes(s, 'single', opts);\n}\n\nfunction lowbyte(c) {\n    var n = c.charCodeAt(0);\n    var x = {\n        8: 'b',\n        9: 't',\n        10: 'n',\n        12: 'f',\n        13: 'r'\n    }[n];\n    if (x) { return '\\\\' + x; }\n    return '\\\\x' + (n < 0x10 ? '0' : '') + $toUpperCase.call(n.toString(16));\n}\n\nfunction markBoxed(str) {\n    return 'Object(' + str + ')';\n}\n\nfunction weakCollectionOf(type) {\n    return type + ' { ? }';\n}\n\nfunction collectionOf(type, size, entries, indent) {\n    var joinedEntries = indent ? indentedJoin(entries, indent) : $join.call(entries, ', ');\n    return type + ' (' + size + ') {' + joinedEntries + '}';\n}\n\nfunction singleLineValues(xs) {\n    for (var i = 0; i < xs.length; i++) {\n        if (indexOf(xs[i], '\\n') >= 0) {\n            return false;\n        }\n    }\n    return true;\n}\n\nfunction getIndent(opts, depth) {\n    var baseIndent;\n    if (opts.indent === '\\t') {\n        baseIndent = '\\t';\n    } else if (typeof opts.indent === 'number' && opts.indent > 0) {\n        baseIndent = $join.call(Array(opts.indent + 1), ' ');\n    } else {\n        return null;\n    }\n    return {\n        base: baseIndent,\n        prev: $join.call(Array(depth + 1), baseIndent)\n    };\n}\n\nfunction indentedJoin(xs, indent) {\n    if (xs.length === 0) { return ''; }\n    var lineJoiner = '\\n' + indent.prev + indent.base;\n    return lineJoiner + $join.call(xs, ',' + lineJoiner) + '\\n' + indent.prev;\n}\n\nfunction arrObjKeys(obj, inspect) {\n    var isArr = isArray(obj);\n    var xs = [];\n    if (isArr) {\n        xs.length = obj.length;\n        for (var i = 0; i < obj.length; i++) {\n            xs[i] = has(obj, i) ? inspect(obj[i], obj) : '';\n        }\n    }\n    var syms = typeof gOPS === 'function' ? gOPS(obj) : [];\n    var symMap;\n    if (hasShammedSymbols) {\n        symMap = {};\n        for (var k = 0; k < syms.length; k++) {\n            symMap['$' + syms[k]] = syms[k];\n        }\n    }\n\n    for (var key in obj) { // eslint-disable-line no-restricted-syntax\n        if (!has(obj, key)) { continue; } // eslint-disable-line no-restricted-syntax, no-continue\n        if (isArr && String(Number(key)) === key && key < obj.length) { continue; } // eslint-disable-line no-restricted-syntax, no-continue\n        if (hasShammedSymbols && symMap['$' + key] instanceof Symbol) {\n            // this is to prevent shammed Symbols, which are stored as strings, from being included in the string key section\n            continue; // eslint-disable-line no-restricted-syntax, no-continue\n        } else if ($test.call(/[^\\w$]/, key)) {\n            xs.push(inspect(key, obj) + ': ' + inspect(obj[key], obj));\n        } else {\n            xs.push(key + ': ' + inspect(obj[key], obj));\n        }\n    }\n    if (typeof gOPS === 'function') {\n        for (var j = 0; j < syms.length; j++) {\n            if (isEnumerable.call(obj, syms[j])) {\n                xs.push('[' + inspect(syms[j]) + ']: ' + inspect(obj[syms[j]], obj));\n            }\n        }\n    }\n    return xs;\n}\n","'use strict';\n\nvar numberIsNaN = function (value) {\n\treturn value !== value;\n};\n\nmodule.exports = function is(a, b) {\n\tif (a === 0 && b === 0) {\n\t\treturn 1 / a === 1 / b;\n\t}\n\tif (a === b) {\n\t\treturn true;\n\t}\n\tif (numberIsNaN(a) && numberIsNaN(b)) {\n\t\treturn true;\n\t}\n\treturn false;\n};\n\n","'use strict';\n\nvar define = require('define-properties');\nvar callBind = require('call-bind');\n\nvar implementation = require('./implementation');\nvar getPolyfill = require('./polyfill');\nvar shim = require('./shim');\n\nvar polyfill = callBind(getPolyfill(), Object);\n\ndefine(polyfill, {\n\tgetPolyfill: getPolyfill,\n\timplementation: implementation,\n\tshim: shim\n});\n\nmodule.exports = polyfill;\n","'use strict';\n\nvar implementation = require('./implementation');\n\nmodule.exports = function getPolyfill() {\n\treturn typeof Object.is === 'function' ? Object.is : implementation;\n};\n","'use strict';\n\nvar getPolyfill = require('./polyfill');\nvar define = require('define-properties');\n\nmodule.exports = function shimObjectIs() {\n\tvar polyfill = getPolyfill();\n\tdefine(Object, { is: polyfill }, {\n\t\tis: function testObjectIs() {\n\t\t\treturn Object.is !== polyfill;\n\t\t}\n\t});\n\treturn polyfill;\n};\n","'use strict';\n\nvar keysShim;\nif (!Object.keys) {\n\t// modified from https://github.com/es-shims/es5-shim\n\tvar has = Object.prototype.hasOwnProperty;\n\tvar toStr = Object.prototype.toString;\n\tvar isArgs = require('./isArguments'); // eslint-disable-line global-require\n\tvar isEnumerable = Object.prototype.propertyIsEnumerable;\n\tvar hasDontEnumBug = !isEnumerable.call({ toString: null }, 'toString');\n\tvar hasProtoEnumBug = isEnumerable.call(function () {}, 'prototype');\n\tvar dontEnums = [\n\t\t'toString',\n\t\t'toLocaleString',\n\t\t'valueOf',\n\t\t'hasOwnProperty',\n\t\t'isPrototypeOf',\n\t\t'propertyIsEnumerable',\n\t\t'constructor'\n\t];\n\tvar equalsConstructorPrototype = function (o) {\n\t\tvar ctor = o.constructor;\n\t\treturn ctor && ctor.prototype === o;\n\t};\n\tvar excludedKeys = {\n\t\t$applicationCache: true,\n\t\t$console: true,\n\t\t$external: true,\n\t\t$frame: true,\n\t\t$frameElement: true,\n\t\t$frames: true,\n\t\t$innerHeight: true,\n\t\t$innerWidth: true,\n\t\t$onmozfullscreenchange: true,\n\t\t$onmozfullscreenerror: true,\n\t\t$outerHeight: true,\n\t\t$outerWidth: true,\n\t\t$pageXOffset: true,\n\t\t$pageYOffset: true,\n\t\t$parent: true,\n\t\t$scrollLeft: true,\n\t\t$scrollTop: true,\n\t\t$scrollX: true,\n\t\t$scrollY: true,\n\t\t$self: true,\n\t\t$webkitIndexedDB: true,\n\t\t$webkitStorageInfo: true,\n\t\t$window: true\n\t};\n\tvar hasAutomationEqualityBug = (function () {\n\t\t/* global window */\n\t\tif (typeof window === 'undefined') { return false; }\n\t\tfor (var k in window) {\n\t\t\ttry {\n\t\t\t\tif (!excludedKeys['$' + k] && has.call(window, k) && window[k] !== null && typeof window[k] === 'object') {\n\t\t\t\t\ttry {\n\t\t\t\t\t\tequalsConstructorPrototype(window[k]);\n\t\t\t\t\t} catch (e) {\n\t\t\t\t\t\treturn true;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} catch (e) {\n\t\t\t\treturn true;\n\t\t\t}\n\t\t}\n\t\treturn false;\n\t}());\n\tvar equalsConstructorPrototypeIfNotBuggy = function (o) {\n\t\t/* global window */\n\t\tif (typeof window === 'undefined' || !hasAutomationEqualityBug) {\n\t\t\treturn equalsConstructorPrototype(o);\n\t\t}\n\t\ttry {\n\t\t\treturn equalsConstructorPrototype(o);\n\t\t} catch (e) {\n\t\t\treturn false;\n\t\t}\n\t};\n\n\tkeysShim = function keys(object) {\n\t\tvar isObject = object !== null && typeof object === 'object';\n\t\tvar isFunction = toStr.call(object) === '[object Function]';\n\t\tvar isArguments = isArgs(object);\n\t\tvar isString = isObject && toStr.call(object) === '[object String]';\n\t\tvar theKeys = [];\n\n\t\tif (!isObject && !isFunction && !isArguments) {\n\t\t\tthrow new TypeError('Object.keys called on a non-object');\n\t\t}\n\n\t\tvar skipProto = hasProtoEnumBug && isFunction;\n\t\tif (isString && object.length > 0 && !has.call(object, 0)) {\n\t\t\tfor (var i = 0; i < object.length; ++i) {\n\t\t\t\ttheKeys.push(String(i));\n\t\t\t}\n\t\t}\n\n\t\tif (isArguments && object.length > 0) {\n\t\t\tfor (var j = 0; j < object.length; ++j) {\n\t\t\t\ttheKeys.push(String(j));\n\t\t\t}\n\t\t} else {\n\t\t\tfor (var name in object) {\n\t\t\t\tif (!(skipProto && name === 'prototype') && has.call(object, name)) {\n\t\t\t\t\ttheKeys.push(String(name));\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tif (hasDontEnumBug) {\n\t\t\tvar skipConstructor = equalsConstructorPrototypeIfNotBuggy(object);\n\n\t\t\tfor (var k = 0; k < dontEnums.length; ++k) {\n\t\t\t\tif (!(skipConstructor && dontEnums[k] === 'constructor') && has.call(object, dontEnums[k])) {\n\t\t\t\t\ttheKeys.push(dontEnums[k]);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\treturn theKeys;\n\t};\n}\nmodule.exports = keysShim;\n","'use strict';\n\nvar slice = Array.prototype.slice;\nvar isArgs = require('./isArguments');\n\nvar origKeys = Object.keys;\nvar keysShim = origKeys ? function keys(o) { return origKeys(o); } : require('./implementation');\n\nvar originalKeys = Object.keys;\n\nkeysShim.shim = function shimObjectKeys() {\n\tif (Object.keys) {\n\t\tvar keysWorksWithArguments = (function () {\n\t\t\t// Safari 5.0 bug\n\t\t\tvar args = Object.keys(arguments);\n\t\t\treturn args && args.length === arguments.length;\n\t\t}(1, 2));\n\t\tif (!keysWorksWithArguments) {\n\t\t\tObject.keys = function keys(object) { // eslint-disable-line func-name-matching\n\t\t\t\tif (isArgs(object)) {\n\t\t\t\t\treturn originalKeys(slice.call(object));\n\t\t\t\t}\n\t\t\t\treturn originalKeys(object);\n\t\t\t};\n\t\t}\n\t} else {\n\t\tObject.keys = keysShim;\n\t}\n\treturn Object.keys || keysShim;\n};\n\nmodule.exports = keysShim;\n","'use strict';\n\nvar toStr = Object.prototype.toString;\n\nmodule.exports = function isArguments(value) {\n\tvar str = toStr.call(value);\n\tvar isArgs = str === '[object Arguments]';\n\tif (!isArgs) {\n\t\tisArgs = str !== '[object Array]' &&\n\t\t\tvalue !== null &&\n\t\t\ttypeof value === 'object' &&\n\t\t\ttypeof value.length === 'number' &&\n\t\t\tvalue.length >= 0 &&\n\t\t\ttoStr.call(value.callee) === '[object Function]';\n\t}\n\treturn isArgs;\n};\n","'use strict';\n\n// modified from https://github.com/es-shims/es6-shim\nvar keys = require('object-keys');\nvar canBeObject = function (obj) {\n\treturn typeof obj !== 'undefined' && obj !== null;\n};\nvar hasSymbols = require('has-symbols/shams')();\nvar callBound = require('call-bind/callBound');\nvar toObject = Object;\nvar $push = callBound('Array.prototype.push');\nvar $propIsEnumerable = callBound('Object.prototype.propertyIsEnumerable');\nvar originalGetSymbols = hasSymbols ? Object.getOwnPropertySymbols : null;\n\n// eslint-disable-next-line no-unused-vars\nmodule.exports = function assign(target, source1) {\n\tif (!canBeObject(target)) { throw new TypeError('target must be an object'); }\n\tvar objTarget = toObject(target);\n\tvar s, source, i, props, syms, value, key;\n\tfor (s = 1; s < arguments.length; ++s) {\n\t\tsource = toObject(arguments[s]);\n\t\tprops = keys(source);\n\t\tvar getSymbols = hasSymbols && (Object.getOwnPropertySymbols || originalGetSymbols);\n\t\tif (getSymbols) {\n\t\t\tsyms = getSymbols(source);\n\t\t\tfor (i = 0; i < syms.length; ++i) {\n\t\t\t\tkey = syms[i];\n\t\t\t\tif ($propIsEnumerable(source, key)) {\n\t\t\t\t\t$push(props, key);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\tfor (i = 0; i < props.length; ++i) {\n\t\t\tkey = props[i];\n\t\t\tvalue = source[key];\n\t\t\tif ($propIsEnumerable(source, key)) {\n\t\t\t\tobjTarget[key] = value;\n\t\t\t}\n\t\t}\n\t}\n\treturn objTarget;\n};\n","'use strict';\n\nvar implementation = require('./implementation');\n\nvar lacksProperEnumerationOrder = function () {\n\tif (!Object.assign) {\n\t\treturn false;\n\t}\n\t/*\n\t * v8, specifically in node 4.x, has a bug with incorrect property enumeration order\n\t * note: this does not detect the bug unless there's 20 characters\n\t */\n\tvar str = 'abcdefghijklmnopqrst';\n\tvar letters = str.split('');\n\tvar map = {};\n\tfor (var i = 0; i < letters.length; ++i) {\n\t\tmap[letters[i]] = letters[i];\n\t}\n\tvar obj = Object.assign({}, map);\n\tvar actual = '';\n\tfor (var k in obj) {\n\t\tactual += k;\n\t}\n\treturn str !== actual;\n};\n\nvar assignHasPendingExceptions = function () {\n\tif (!Object.assign || !Object.preventExtensions) {\n\t\treturn false;\n\t}\n\t/*\n\t * Firefox 37 still has \"pending exception\" logic in its Object.assign implementation,\n\t * which is 72% slower than our shim, and Firefox 40's native implementation.\n\t */\n\tvar thrower = Object.preventExtensions({ 1: 2 });\n\ttry {\n\t\tObject.assign(thrower, 'xy');\n\t} catch (e) {\n\t\treturn thrower[1] === 'y';\n\t}\n\treturn false;\n};\n\nmodule.exports = function getPolyfill() {\n\tif (!Object.assign) {\n\t\treturn implementation;\n\t}\n\tif (lacksProperEnumerationOrder()) {\n\t\treturn implementation;\n\t}\n\tif (assignHasPendingExceptions()) {\n\t\treturn implementation;\n\t}\n\treturn Object.assign;\n};\n","'use strict';\n\nvar define = require('define-properties');\nvar getPolyfill = require('./polyfill');\n\nmodule.exports = function shimAssign() {\n\tvar polyfill = getPolyfill();\n\tdefine(\n\t\tObject,\n\t\t{ assign: polyfill },\n\t\t{ assign: function () { return Object.assign !== polyfill; } }\n\t);\n\treturn polyfill;\n};\n","// .dirname, .basename, and .extname methods are extracted from Node.js v8.11.1,\n// backported and transplited with Babel, with backwards-compat fixes\n\n// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n// resolves . and .. elements in a path array with directory names there\n// must be no slashes, empty elements, or device names (c:\\) in the array\n// (so also no leading and trailing slashes - it does not distinguish\n// relative and absolute paths)\nfunction normalizeArray(parts, allowAboveRoot) {\n  // if the path tries to go above the root, `up` ends up > 0\n  var up = 0;\n  for (var i = parts.length - 1; i >= 0; i--) {\n    var last = parts[i];\n    if (last === '.') {\n      parts.splice(i, 1);\n    } else if (last === '..') {\n      parts.splice(i, 1);\n      up++;\n    } else if (up) {\n      parts.splice(i, 1);\n      up--;\n    }\n  }\n\n  // if the path is allowed to go above the root, restore leading ..s\n  if (allowAboveRoot) {\n    for (; up--; up) {\n      parts.unshift('..');\n    }\n  }\n\n  return parts;\n}\n\n// path.resolve([from ...], to)\n// posix version\nexports.resolve = function() {\n  var resolvedPath = '',\n      resolvedAbsolute = false;\n\n  for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {\n    var path = (i >= 0) ? arguments[i] : process.cwd();\n\n    // Skip empty and invalid entries\n    if (typeof path !== 'string') {\n      throw new TypeError('Arguments to path.resolve must be strings');\n    } else if (!path) {\n      continue;\n    }\n\n    resolvedPath = path + '/' + resolvedPath;\n    resolvedAbsolute = path.charAt(0) === '/';\n  }\n\n  // At this point the path should be resolved to a full absolute path, but\n  // handle relative paths to be safe (might happen when process.cwd() fails)\n\n  // Normalize the path\n  resolvedPath = normalizeArray(filter(resolvedPath.split('/'), function(p) {\n    return !!p;\n  }), !resolvedAbsolute).join('/');\n\n  return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';\n};\n\n// path.normalize(path)\n// posix version\nexports.normalize = function(path) {\n  var isAbsolute = exports.isAbsolute(path),\n      trailingSlash = substr(path, -1) === '/';\n\n  // Normalize the path\n  path = normalizeArray(filter(path.split('/'), function(p) {\n    return !!p;\n  }), !isAbsolute).join('/');\n\n  if (!path && !isAbsolute) {\n    path = '.';\n  }\n  if (path && trailingSlash) {\n    path += '/';\n  }\n\n  return (isAbsolute ? '/' : '') + path;\n};\n\n// posix version\nexports.isAbsolute = function(path) {\n  return path.charAt(0) === '/';\n};\n\n// posix version\nexports.join = function() {\n  var paths = Array.prototype.slice.call(arguments, 0);\n  return exports.normalize(filter(paths, function(p, index) {\n    if (typeof p !== 'string') {\n      throw new TypeError('Arguments to path.join must be strings');\n    }\n    return p;\n  }).join('/'));\n};\n\n\n// path.relative(from, to)\n// posix version\nexports.relative = function(from, to) {\n  from = exports.resolve(from).substr(1);\n  to = exports.resolve(to).substr(1);\n\n  function trim(arr) {\n    var start = 0;\n    for (; start < arr.length; start++) {\n      if (arr[start] !== '') break;\n    }\n\n    var end = arr.length - 1;\n    for (; end >= 0; end--) {\n      if (arr[end] !== '') break;\n    }\n\n    if (start > end) return [];\n    return arr.slice(start, end - start + 1);\n  }\n\n  var fromParts = trim(from.split('/'));\n  var toParts = trim(to.split('/'));\n\n  var length = Math.min(fromParts.length, toParts.length);\n  var samePartsLength = length;\n  for (var i = 0; i < length; i++) {\n    if (fromParts[i] !== toParts[i]) {\n      samePartsLength = i;\n      break;\n    }\n  }\n\n  var outputParts = [];\n  for (var i = samePartsLength; i < fromParts.length; i++) {\n    outputParts.push('..');\n  }\n\n  outputParts = outputParts.concat(toParts.slice(samePartsLength));\n\n  return outputParts.join('/');\n};\n\nexports.sep = '/';\nexports.delimiter = ':';\n\nexports.dirname = function (path) {\n  if (typeof path !== 'string') path = path + '';\n  if (path.length === 0) return '.';\n  var code = path.charCodeAt(0);\n  var hasRoot = code === 47 /*/*/;\n  var end = -1;\n  var matchedSlash = true;\n  for (var i = path.length - 1; i >= 1; --i) {\n    code = path.charCodeAt(i);\n    if (code === 47 /*/*/) {\n        if (!matchedSlash) {\n          end = i;\n          break;\n        }\n      } else {\n      // We saw the first non-path separator\n      matchedSlash = false;\n    }\n  }\n\n  if (end === -1) return hasRoot ? '/' : '.';\n  if (hasRoot && end === 1) {\n    // return '//';\n    // Backwards-compat fix:\n    return '/';\n  }\n  return path.slice(0, end);\n};\n\nfunction basename(path) {\n  if (typeof path !== 'string') path = path + '';\n\n  var start = 0;\n  var end = -1;\n  var matchedSlash = true;\n  var i;\n\n  for (i = path.length - 1; i >= 0; --i) {\n    if (path.charCodeAt(i) === 47 /*/*/) {\n        // If we reached a path separator that was not part of a set of path\n        // separators at the end of the string, stop now\n        if (!matchedSlash) {\n          start = i + 1;\n          break;\n        }\n      } else if (end === -1) {\n      // We saw the first non-path separator, mark this as the end of our\n      // path component\n      matchedSlash = false;\n      end = i + 1;\n    }\n  }\n\n  if (end === -1) return '';\n  return path.slice(start, end);\n}\n\n// Uses a mixed approach for backwards-compatibility, as ext behavior changed\n// in new Node.js versions, so only basename() above is backported here\nexports.basename = function (path, ext) {\n  var f = basename(path);\n  if (ext && f.substr(-1 * ext.length) === ext) {\n    f = f.substr(0, f.length - ext.length);\n  }\n  return f;\n};\n\nexports.extname = function (path) {\n  if (typeof path !== 'string') path = path + '';\n  var startDot = -1;\n  var startPart = 0;\n  var end = -1;\n  var matchedSlash = true;\n  // Track the state of characters (if any) we see before our first dot and\n  // after any path separator we find\n  var preDotState = 0;\n  for (var i = path.length - 1; i >= 0; --i) {\n    var code = path.charCodeAt(i);\n    if (code === 47 /*/*/) {\n        // If we reached a path separator that was not part of a set of path\n        // separators at the end of the string, stop now\n        if (!matchedSlash) {\n          startPart = i + 1;\n          break;\n        }\n        continue;\n      }\n    if (end === -1) {\n      // We saw the first non-path separator, mark this as the end of our\n      // extension\n      matchedSlash = false;\n      end = i + 1;\n    }\n    if (code === 46 /*.*/) {\n        // If this is our first dot, mark it as the start of our extension\n        if (startDot === -1)\n          startDot = i;\n        else if (preDotState !== 1)\n          preDotState = 1;\n    } else if (startDot !== -1) {\n      // We saw a non-dot and non-path separator before our dot, so we should\n      // have a good chance at having a non-empty extension\n      preDotState = -1;\n    }\n  }\n\n  if (startDot === -1 || end === -1 ||\n      // We saw a non-dot character immediately before the dot\n      preDotState === 0 ||\n      // The (right-most) trimmed path component is exactly '..'\n      preDotState === 1 && startDot === end - 1 && startDot === startPart + 1) {\n    return '';\n  }\n  return path.slice(startDot, end);\n};\n\nfunction filter (xs, f) {\n    if (xs.filter) return xs.filter(f);\n    var res = [];\n    for (var i = 0; i < xs.length; i++) {\n        if (f(xs[i], i, xs)) res.push(xs[i]);\n    }\n    return res;\n}\n\n// String.prototype.substr - negative index don't work in IE8\nvar substr = 'ab'.substr(-1) === 'b'\n    ? function (str, start, len) { return str.substr(start, len) }\n    : function (str, start, len) {\n        if (start < 0) start = str.length + start;\n        return str.substr(start, len);\n    }\n;\n","'use strict';\n\nif (typeof process === 'undefined' ||\n    !process.version ||\n    process.version.indexOf('v0.') === 0 ||\n    process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) {\n  module.exports = { nextTick: nextTick };\n} else {\n  module.exports = process\n}\n\nfunction nextTick(fn, arg1, arg2, arg3) {\n  if (typeof fn !== 'function') {\n    throw new TypeError('\"callback\" argument must be a function');\n  }\n  var len = arguments.length;\n  var args, i;\n  switch (len) {\n  case 0:\n  case 1:\n    return process.nextTick(fn);\n  case 2:\n    return process.nextTick(function afterTickOne() {\n      fn.call(null, arg1);\n    });\n  case 3:\n    return process.nextTick(function afterTickTwo() {\n      fn.call(null, arg1, arg2);\n    });\n  case 4:\n    return process.nextTick(function afterTickThree() {\n      fn.call(null, arg1, arg2, arg3);\n    });\n  default:\n    args = new Array(len - 1);\n    i = 0;\n    while (i < args.length) {\n      args[i++] = arguments[i];\n    }\n    return process.nextTick(function afterTick() {\n      fn.apply(null, args);\n    });\n  }\n}\n\n","// shim for using process in browser\nvar process = module.exports = {};\n\n// cached from whatever global is present so that test runners that stub it\n// don't break things.  But we need to wrap it in a try catch in case it is\n// wrapped in strict mode code which doesn't define any globals.  It's inside a\n// function because try/catches deoptimize in certain engines.\n\nvar cachedSetTimeout;\nvar cachedClearTimeout;\n\nfunction defaultSetTimout() {\n    throw new Error('setTimeout has not been defined');\n}\nfunction defaultClearTimeout () {\n    throw new Error('clearTimeout has not been defined');\n}\n(function () {\n    try {\n        if (typeof setTimeout === 'function') {\n            cachedSetTimeout = setTimeout;\n        } else {\n            cachedSetTimeout = defaultSetTimout;\n        }\n    } catch (e) {\n        cachedSetTimeout = defaultSetTimout;\n    }\n    try {\n        if (typeof clearTimeout === 'function') {\n            cachedClearTimeout = clearTimeout;\n        } else {\n            cachedClearTimeout = defaultClearTimeout;\n        }\n    } catch (e) {\n        cachedClearTimeout = defaultClearTimeout;\n    }\n} ())\nfunction runTimeout(fun) {\n    if (cachedSetTimeout === setTimeout) {\n        //normal enviroments in sane situations\n        return setTimeout(fun, 0);\n    }\n    // if setTimeout wasn't available but was latter defined\n    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {\n        cachedSetTimeout = setTimeout;\n        return setTimeout(fun, 0);\n    }\n    try {\n        // when when somebody has screwed with setTimeout but no I.E. maddness\n        return cachedSetTimeout(fun, 0);\n    } catch(e){\n        try {\n            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally\n            return cachedSetTimeout.call(null, fun, 0);\n        } catch(e){\n            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error\n            return cachedSetTimeout.call(this, fun, 0);\n        }\n    }\n\n\n}\nfunction runClearTimeout(marker) {\n    if (cachedClearTimeout === clearTimeout) {\n        //normal enviroments in sane situations\n        return clearTimeout(marker);\n    }\n    // if clearTimeout wasn't available but was latter defined\n    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {\n        cachedClearTimeout = clearTimeout;\n        return clearTimeout(marker);\n    }\n    try {\n        // when when somebody has screwed with setTimeout but no I.E. maddness\n        return cachedClearTimeout(marker);\n    } catch (e){\n        try {\n            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally\n            return cachedClearTimeout.call(null, marker);\n        } catch (e){\n            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.\n            // Some versions of I.E. have different rules for clearTimeout vs setTimeout\n            return cachedClearTimeout.call(this, marker);\n        }\n    }\n\n\n\n}\nvar queue = [];\nvar draining = false;\nvar currentQueue;\nvar queueIndex = -1;\n\nfunction cleanUpNextTick() {\n    if (!draining || !currentQueue) {\n        return;\n    }\n    draining = false;\n    if (currentQueue.length) {\n        queue = currentQueue.concat(queue);\n    } else {\n        queueIndex = -1;\n    }\n    if (queue.length) {\n        drainQueue();\n    }\n}\n\nfunction drainQueue() {\n    if (draining) {\n        return;\n    }\n    var timeout = runTimeout(cleanUpNextTick);\n    draining = true;\n\n    var len = queue.length;\n    while(len) {\n        currentQueue = queue;\n        queue = [];\n        while (++queueIndex < len) {\n            if (currentQueue) {\n                currentQueue[queueIndex].run();\n            }\n        }\n        queueIndex = -1;\n        len = queue.length;\n    }\n    currentQueue = null;\n    draining = false;\n    runClearTimeout(timeout);\n}\n\nprocess.nextTick = function (fun) {\n    var args = new Array(arguments.length - 1);\n    if (arguments.length > 1) {\n        for (var i = 1; i < arguments.length; i++) {\n            args[i - 1] = arguments[i];\n        }\n    }\n    queue.push(new Item(fun, args));\n    if (queue.length === 1 && !draining) {\n        runTimeout(drainQueue);\n    }\n};\n\n// v8 likes predictible objects\nfunction Item(fun, array) {\n    this.fun = fun;\n    this.array = array;\n}\nItem.prototype.run = function () {\n    this.fun.apply(null, this.array);\n};\nprocess.title = 'browser';\nprocess.browser = true;\nprocess.env = {};\nprocess.argv = [];\nprocess.version = ''; // empty string to avoid regexp issues\nprocess.versions = {};\n\nfunction noop() {}\n\nprocess.on = noop;\nprocess.addListener = noop;\nprocess.once = noop;\nprocess.off = noop;\nprocess.removeListener = noop;\nprocess.removeAllListeners = noop;\nprocess.emit = noop;\nprocess.prependListener = noop;\nprocess.prependOnceListener = noop;\n\nprocess.listeners = function (name) { return [] }\n\nprocess.binding = function (name) {\n    throw new Error('process.binding is not supported');\n};\n\nprocess.cwd = function () { return '/' };\nprocess.chdir = function (dir) {\n    throw new Error('process.chdir is not supported');\n};\nprocess.umask = function() { return 0; };\n","module.exports = require('./lib/_stream_duplex.js');\n","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n// a duplex stream is just a stream that is both readable and writable.\n// Since JS doesn't have multiple prototypal inheritance, this class\n// prototypally inherits from Readable, and then parasitically from\n// Writable.\n\n'use strict';\n\n/*<replacement>*/\n\nvar pna = require('process-nextick-args');\n/*</replacement>*/\n\n/*<replacement>*/\nvar objectKeys = Object.keys || function (obj) {\n  var keys = [];\n  for (var key in obj) {\n    keys.push(key);\n  }return keys;\n};\n/*</replacement>*/\n\nmodule.exports = Duplex;\n\n/*<replacement>*/\nvar util = Object.create(require('core-util-is'));\nutil.inherits = require('inherits');\n/*</replacement>*/\n\nvar Readable = require('./_stream_readable');\nvar Writable = require('./_stream_writable');\n\nutil.inherits(Duplex, Readable);\n\n{\n  // avoid scope creep, the keys array can then be collected\n  var keys = objectKeys(Writable.prototype);\n  for (var v = 0; v < keys.length; v++) {\n    var method = keys[v];\n    if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];\n  }\n}\n\nfunction Duplex(options) {\n  if (!(this instanceof Duplex)) return new Duplex(options);\n\n  Readable.call(this, options);\n  Writable.call(this, options);\n\n  if (options && options.readable === false) this.readable = false;\n\n  if (options && options.writable === false) this.writable = false;\n\n  this.allowHalfOpen = true;\n  if (options && options.allowHalfOpen === false) this.allowHalfOpen = false;\n\n  this.once('end', onend);\n}\n\nObject.defineProperty(Duplex.prototype, 'writableHighWaterMark', {\n  // making it explicit this property is not enumerable\n  // because otherwise some prototype manipulation in\n  // userland will fail\n  enumerable: false,\n  get: function () {\n    return this._writableState.highWaterMark;\n  }\n});\n\n// the no-half-open enforcer\nfunction onend() {\n  // if we allow half-open state, or if the writable side ended,\n  // then we're ok.\n  if (this.allowHalfOpen || this._writableState.ended) return;\n\n  // no more data can be written.\n  // But allow more writes to happen in this tick.\n  pna.nextTick(onEndNT, this);\n}\n\nfunction onEndNT(self) {\n  self.end();\n}\n\nObject.defineProperty(Duplex.prototype, 'destroyed', {\n  get: function () {\n    if (this._readableState === undefined || this._writableState === undefined) {\n      return false;\n    }\n    return this._readableState.destroyed && this._writableState.destroyed;\n  },\n  set: function (value) {\n    // we ignore the value if the stream\n    // has not been initialized yet\n    if (this._readableState === undefined || this._writableState === undefined) {\n      return;\n    }\n\n    // backward compatibility, the user is explicitly\n    // managing destroyed\n    this._readableState.destroyed = value;\n    this._writableState.destroyed = value;\n  }\n});\n\nDuplex.prototype._destroy = function (err, cb) {\n  this.push(null);\n  this.end();\n\n  pna.nextTick(cb, err);\n};","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n// a passthrough stream.\n// basically just the most minimal sort of Transform stream.\n// Every written chunk gets output as-is.\n\n'use strict';\n\nmodule.exports = PassThrough;\n\nvar Transform = require('./_stream_transform');\n\n/*<replacement>*/\nvar util = Object.create(require('core-util-is'));\nutil.inherits = require('inherits');\n/*</replacement>*/\n\nutil.inherits(PassThrough, Transform);\n\nfunction PassThrough(options) {\n  if (!(this instanceof PassThrough)) return new PassThrough(options);\n\n  Transform.call(this, options);\n}\n\nPassThrough.prototype._transform = function (chunk, encoding, cb) {\n  cb(null, chunk);\n};","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n'use strict';\n\n/*<replacement>*/\n\nvar pna = require('process-nextick-args');\n/*</replacement>*/\n\nmodule.exports = Readable;\n\n/*<replacement>*/\nvar isArray = require('isarray');\n/*</replacement>*/\n\n/*<replacement>*/\nvar Duplex;\n/*</replacement>*/\n\nReadable.ReadableState = ReadableState;\n\n/*<replacement>*/\nvar EE = require('events').EventEmitter;\n\nvar EElistenerCount = function (emitter, type) {\n  return emitter.listeners(type).length;\n};\n/*</replacement>*/\n\n/*<replacement>*/\nvar Stream = require('./internal/streams/stream');\n/*</replacement>*/\n\n/*<replacement>*/\n\nvar Buffer = require('safe-buffer').Buffer;\nvar OurUint8Array = global.Uint8Array || function () {};\nfunction _uint8ArrayToBuffer(chunk) {\n  return Buffer.from(chunk);\n}\nfunction _isUint8Array(obj) {\n  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;\n}\n\n/*</replacement>*/\n\n/*<replacement>*/\nvar util = Object.create(require('core-util-is'));\nutil.inherits = require('inherits');\n/*</replacement>*/\n\n/*<replacement>*/\nvar debugUtil = require('util');\nvar debug = void 0;\nif (debugUtil && debugUtil.debuglog) {\n  debug = debugUtil.debuglog('stream');\n} else {\n  debug = function () {};\n}\n/*</replacement>*/\n\nvar BufferList = require('./internal/streams/BufferList');\nvar destroyImpl = require('./internal/streams/destroy');\nvar StringDecoder;\n\nutil.inherits(Readable, Stream);\n\nvar kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume'];\n\nfunction prependListener(emitter, event, fn) {\n  // Sadly this is not cacheable as some libraries bundle their own\n  // event emitter implementation with them.\n  if (typeof emitter.prependListener === 'function') return emitter.prependListener(event, fn);\n\n  // This is a hack to make sure that our error handler is attached before any\n  // userland ones.  NEVER DO THIS. This is here only because this code needs\n  // to continue to work with older versions of Node.js that do not include\n  // the prependListener() method. The goal is to eventually remove this hack.\n  if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]];\n}\n\nfunction ReadableState(options, stream) {\n  Duplex = Duplex || require('./_stream_duplex');\n\n  options = options || {};\n\n  // Duplex streams are both readable and writable, but share\n  // the same options object.\n  // However, some cases require setting options to different\n  // values for the readable and the writable sides of the duplex stream.\n  // These options can be provided separately as readableXXX and writableXXX.\n  var isDuplex = stream instanceof Duplex;\n\n  // object stream flag. Used to make read(n) ignore n and to\n  // make all the buffer merging and length checks go away\n  this.objectMode = !!options.objectMode;\n\n  if (isDuplex) this.objectMode = this.objectMode || !!options.readableObjectMode;\n\n  // the point at which it stops calling _read() to fill the buffer\n  // Note: 0 is a valid value, means \"don't call _read preemptively ever\"\n  var hwm = options.highWaterMark;\n  var readableHwm = options.readableHighWaterMark;\n  var defaultHwm = this.objectMode ? 16 : 16 * 1024;\n\n  if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (readableHwm || readableHwm === 0)) this.highWaterMark = readableHwm;else this.highWaterMark = defaultHwm;\n\n  // cast to ints.\n  this.highWaterMark = Math.floor(this.highWaterMark);\n\n  // A linked list is used to store data chunks instead of an array because the\n  // linked list can remove elements from the beginning faster than\n  // array.shift()\n  this.buffer = new BufferList();\n  this.length = 0;\n  this.pipes = null;\n  this.pipesCount = 0;\n  this.flowing = null;\n  this.ended = false;\n  this.endEmitted = false;\n  this.reading = false;\n\n  // a flag to be able to tell if the event 'readable'/'data' is emitted\n  // immediately, or on a later tick.  We set this to true at first, because\n  // any actions that shouldn't happen until \"later\" should generally also\n  // not happen before the first read call.\n  this.sync = true;\n\n  // whenever we return null, then we set a flag to say\n  // that we're awaiting a 'readable' event emission.\n  this.needReadable = false;\n  this.emittedReadable = false;\n  this.readableListening = false;\n  this.resumeScheduled = false;\n\n  // has it been destroyed\n  this.destroyed = false;\n\n  // Crypto is kind of old and crusty.  Historically, its default string\n  // encoding is 'binary' so we have to make this configurable.\n  // Everything else in the universe uses 'utf8', though.\n  this.defaultEncoding = options.defaultEncoding || 'utf8';\n\n  // the number of writers that are awaiting a drain event in .pipe()s\n  this.awaitDrain = 0;\n\n  // if true, a maybeReadMore has been scheduled\n  this.readingMore = false;\n\n  this.decoder = null;\n  this.encoding = null;\n  if (options.encoding) {\n    if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;\n    this.decoder = new StringDecoder(options.encoding);\n    this.encoding = options.encoding;\n  }\n}\n\nfunction Readable(options) {\n  Duplex = Duplex || require('./_stream_duplex');\n\n  if (!(this instanceof Readable)) return new Readable(options);\n\n  this._readableState = new ReadableState(options, this);\n\n  // legacy\n  this.readable = true;\n\n  if (options) {\n    if (typeof options.read === 'function') this._read = options.read;\n\n    if (typeof options.destroy === 'function') this._destroy = options.destroy;\n  }\n\n  Stream.call(this);\n}\n\nObject.defineProperty(Readable.prototype, 'destroyed', {\n  get: function () {\n    if (this._readableState === undefined) {\n      return false;\n    }\n    return this._readableState.destroyed;\n  },\n  set: function (value) {\n    // we ignore the value if the stream\n    // has not been initialized yet\n    if (!this._readableState) {\n      return;\n    }\n\n    // backward compatibility, the user is explicitly\n    // managing destroyed\n    this._readableState.destroyed = value;\n  }\n});\n\nReadable.prototype.destroy = destroyImpl.destroy;\nReadable.prototype._undestroy = destroyImpl.undestroy;\nReadable.prototype._destroy = function (err, cb) {\n  this.push(null);\n  cb(err);\n};\n\n// Manually shove something into the read() buffer.\n// This returns true if the highWaterMark has not been hit yet,\n// similar to how Writable.write() returns true if you should\n// write() some more.\nReadable.prototype.push = function (chunk, encoding) {\n  var state = this._readableState;\n  var skipChunkCheck;\n\n  if (!state.objectMode) {\n    if (typeof chunk === 'string') {\n      encoding = encoding || state.defaultEncoding;\n      if (encoding !== state.encoding) {\n        chunk = Buffer.from(chunk, encoding);\n        encoding = '';\n      }\n      skipChunkCheck = true;\n    }\n  } else {\n    skipChunkCheck = true;\n  }\n\n  return readableAddChunk(this, chunk, encoding, false, skipChunkCheck);\n};\n\n// Unshift should *always* be something directly out of read()\nReadable.prototype.unshift = function (chunk) {\n  return readableAddChunk(this, chunk, null, true, false);\n};\n\nfunction readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) {\n  var state = stream._readableState;\n  if (chunk === null) {\n    state.reading = false;\n    onEofChunk(stream, state);\n  } else {\n    var er;\n    if (!skipChunkCheck) er = chunkInvalid(state, chunk);\n    if (er) {\n      stream.emit('error', er);\n    } else if (state.objectMode || chunk && chunk.length > 0) {\n      if (typeof chunk !== 'string' && !state.objectMode && Object.getPrototypeOf(chunk) !== Buffer.prototype) {\n        chunk = _uint8ArrayToBuffer(chunk);\n      }\n\n      if (addToFront) {\n        if (state.endEmitted) stream.emit('error', new Error('stream.unshift() after end event'));else addChunk(stream, state, chunk, true);\n      } else if (state.ended) {\n        stream.emit('error', new Error('stream.push() after EOF'));\n      } else {\n        state.reading = false;\n        if (state.decoder && !encoding) {\n          chunk = state.decoder.write(chunk);\n          if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false);else maybeReadMore(stream, state);\n        } else {\n          addChunk(stream, state, chunk, false);\n        }\n      }\n    } else if (!addToFront) {\n      state.reading = false;\n    }\n  }\n\n  return needMoreData(state);\n}\n\nfunction addChunk(stream, state, chunk, addToFront) {\n  if (state.flowing && state.length === 0 && !state.sync) {\n    stream.emit('data', chunk);\n    stream.read(0);\n  } else {\n    // update the buffer info.\n    state.length += state.objectMode ? 1 : chunk.length;\n    if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk);\n\n    if (state.needReadable) emitReadable(stream);\n  }\n  maybeReadMore(stream, state);\n}\n\nfunction chunkInvalid(state, chunk) {\n  var er;\n  if (!_isUint8Array(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {\n    er = new TypeError('Invalid non-string/buffer chunk');\n  }\n  return er;\n}\n\n// if it's past the high water mark, we can push in some more.\n// Also, if we have no data yet, we can stand some\n// more bytes.  This is to work around cases where hwm=0,\n// such as the repl.  Also, if the push() triggered a\n// readable event, and the user called read(largeNumber) such that\n// needReadable was set, then we ought to push more, so that another\n// 'readable' event will be triggered.\nfunction needMoreData(state) {\n  return !state.ended && (state.needReadable || state.length < state.highWaterMark || state.length === 0);\n}\n\nReadable.prototype.isPaused = function () {\n  return this._readableState.flowing === false;\n};\n\n// backwards compatibility.\nReadable.prototype.setEncoding = function (enc) {\n  if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;\n  this._readableState.decoder = new StringDecoder(enc);\n  this._readableState.encoding = enc;\n  return this;\n};\n\n// Don't raise the hwm > 8MB\nvar MAX_HWM = 0x800000;\nfunction computeNewHighWaterMark(n) {\n  if (n >= MAX_HWM) {\n    n = MAX_HWM;\n  } else {\n    // Get the next highest power of 2 to prevent increasing hwm excessively in\n    // tiny amounts\n    n--;\n    n |= n >>> 1;\n    n |= n >>> 2;\n    n |= n >>> 4;\n    n |= n >>> 8;\n    n |= n >>> 16;\n    n++;\n  }\n  return n;\n}\n\n// This function is designed to be inlinable, so please take care when making\n// changes to the function body.\nfunction howMuchToRead(n, state) {\n  if (n <= 0 || state.length === 0 && state.ended) return 0;\n  if (state.objectMode) return 1;\n  if (n !== n) {\n    // Only flow one buffer at a time\n    if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length;\n  }\n  // If we're asking for more than the current hwm, then raise the hwm.\n  if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n);\n  if (n <= state.length) return n;\n  // Don't have enough\n  if (!state.ended) {\n    state.needReadable = true;\n    return 0;\n  }\n  return state.length;\n}\n\n// you can override either this method, or the async _read(n) below.\nReadable.prototype.read = function (n) {\n  debug('read', n);\n  n = parseInt(n, 10);\n  var state = this._readableState;\n  var nOrig = n;\n\n  if (n !== 0) state.emittedReadable = false;\n\n  // if we're doing read(0) to trigger a readable event, but we\n  // already have a bunch of data in the buffer, then just trigger\n  // the 'readable' event and move on.\n  if (n === 0 && state.needReadable && (state.length >= state.highWaterMark || state.ended)) {\n    debug('read: emitReadable', state.length, state.ended);\n    if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this);\n    return null;\n  }\n\n  n = howMuchToRead(n, state);\n\n  // if we've ended, and we're now clear, then finish it up.\n  if (n === 0 && state.ended) {\n    if (state.length === 0) endReadable(this);\n    return null;\n  }\n\n  // All the actual chunk generation logic needs to be\n  // *below* the call to _read.  The reason is that in certain\n  // synthetic stream cases, such as passthrough streams, _read\n  // may be a completely synchronous operation which may change\n  // the state of the read buffer, providing enough data when\n  // before there was *not* enough.\n  //\n  // So, the steps are:\n  // 1. Figure out what the state of things will be after we do\n  // a read from the buffer.\n  //\n  // 2. If that resulting state will trigger a _read, then call _read.\n  // Note that this may be asynchronous, or synchronous.  Yes, it is\n  // deeply ugly to write APIs this way, but that still doesn't mean\n  // that the Readable class should behave improperly, as streams are\n  // designed to be sync/async agnostic.\n  // Take note if the _read call is sync or async (ie, if the read call\n  // has returned yet), so that we know whether or not it's safe to emit\n  // 'readable' etc.\n  //\n  // 3. Actually pull the requested chunks out of the buffer and return.\n\n  // if we need a readable event, then we need to do some reading.\n  var doRead = state.needReadable;\n  debug('need readable', doRead);\n\n  // if we currently have less than the highWaterMark, then also read some\n  if (state.length === 0 || state.length - n < state.highWaterMark) {\n    doRead = true;\n    debug('length less than watermark', doRead);\n  }\n\n  // however, if we've ended, then there's no point, and if we're already\n  // reading, then it's unnecessary.\n  if (state.ended || state.reading) {\n    doRead = false;\n    debug('reading or ended', doRead);\n  } else if (doRead) {\n    debug('do read');\n    state.reading = true;\n    state.sync = true;\n    // if the length is currently zero, then we *need* a readable event.\n    if (state.length === 0) state.needReadable = true;\n    // call internal read method\n    this._read(state.highWaterMark);\n    state.sync = false;\n    // If _read pushed data synchronously, then `reading` will be false,\n    // and we need to re-evaluate how much data we can return to the user.\n    if (!state.reading) n = howMuchToRead(nOrig, state);\n  }\n\n  var ret;\n  if (n > 0) ret = fromList(n, state);else ret = null;\n\n  if (ret === null) {\n    state.needReadable = true;\n    n = 0;\n  } else {\n    state.length -= n;\n  }\n\n  if (state.length === 0) {\n    // If we have nothing in the buffer, then we want to know\n    // as soon as we *do* get something into the buffer.\n    if (!state.ended) state.needReadable = true;\n\n    // If we tried to read() past the EOF, then emit end on the next tick.\n    if (nOrig !== n && state.ended) endReadable(this);\n  }\n\n  if (ret !== null) this.emit('data', ret);\n\n  return ret;\n};\n\nfunction onEofChunk(stream, state) {\n  if (state.ended) return;\n  if (state.decoder) {\n    var chunk = state.decoder.end();\n    if (chunk && chunk.length) {\n      state.buffer.push(chunk);\n      state.length += state.objectMode ? 1 : chunk.length;\n    }\n  }\n  state.ended = true;\n\n  // emit 'readable' now to make sure it gets picked up.\n  emitReadable(stream);\n}\n\n// Don't emit readable right away in sync mode, because this can trigger\n// another read() call => stack overflow.  This way, it might trigger\n// a nextTick recursion warning, but that's not so bad.\nfunction emitReadable(stream) {\n  var state = stream._readableState;\n  state.needReadable = false;\n  if (!state.emittedReadable) {\n    debug('emitReadable', state.flowing);\n    state.emittedReadable = true;\n    if (state.sync) pna.nextTick(emitReadable_, stream);else emitReadable_(stream);\n  }\n}\n\nfunction emitReadable_(stream) {\n  debug('emit readable');\n  stream.emit('readable');\n  flow(stream);\n}\n\n// at this point, the user has presumably seen the 'readable' event,\n// and called read() to consume some data.  that may have triggered\n// in turn another _read(n) call, in which case reading = true if\n// it's in progress.\n// However, if we're not ended, or reading, and the length < hwm,\n// then go ahead and try to read some more preemptively.\nfunction maybeReadMore(stream, state) {\n  if (!state.readingMore) {\n    state.readingMore = true;\n    pna.nextTick(maybeReadMore_, stream, state);\n  }\n}\n\nfunction maybeReadMore_(stream, state) {\n  var len = state.length;\n  while (!state.reading && !state.flowing && !state.ended && state.length < state.highWaterMark) {\n    debug('maybeReadMore read 0');\n    stream.read(0);\n    if (len === state.length)\n      // didn't get any data, stop spinning.\n      break;else len = state.length;\n  }\n  state.readingMore = false;\n}\n\n// abstract method.  to be overridden in specific implementation classes.\n// call cb(er, data) where data is <= n in length.\n// for virtual (non-string, non-buffer) streams, \"length\" is somewhat\n// arbitrary, and perhaps not very meaningful.\nReadable.prototype._read = function (n) {\n  this.emit('error', new Error('_read() is not implemented'));\n};\n\nReadable.prototype.pipe = function (dest, pipeOpts) {\n  var src = this;\n  var state = this._readableState;\n\n  switch (state.pipesCount) {\n    case 0:\n      state.pipes = dest;\n      break;\n    case 1:\n      state.pipes = [state.pipes, dest];\n      break;\n    default:\n      state.pipes.push(dest);\n      break;\n  }\n  state.pipesCount += 1;\n  debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts);\n\n  var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr;\n\n  var endFn = doEnd ? onend : unpipe;\n  if (state.endEmitted) pna.nextTick(endFn);else src.once('end', endFn);\n\n  dest.on('unpipe', onunpipe);\n  function onunpipe(readable, unpipeInfo) {\n    debug('onunpipe');\n    if (readable === src) {\n      if (unpipeInfo && unpipeInfo.hasUnpiped === false) {\n        unpipeInfo.hasUnpiped = true;\n        cleanup();\n      }\n    }\n  }\n\n  function onend() {\n    debug('onend');\n    dest.end();\n  }\n\n  // when the dest drains, it reduces the awaitDrain counter\n  // on the source.  This would be more elegant with a .once()\n  // handler in flow(), but adding and removing repeatedly is\n  // too slow.\n  var ondrain = pipeOnDrain(src);\n  dest.on('drain', ondrain);\n\n  var cleanedUp = false;\n  function cleanup() {\n    debug('cleanup');\n    // cleanup event handlers once the pipe is broken\n    dest.removeListener('close', onclose);\n    dest.removeListener('finish', onfinish);\n    dest.removeListener('drain', ondrain);\n    dest.removeListener('error', onerror);\n    dest.removeListener('unpipe', onunpipe);\n    src.removeListener('end', onend);\n    src.removeListener('end', unpipe);\n    src.removeListener('data', ondata);\n\n    cleanedUp = true;\n\n    // if the reader is waiting for a drain event from this\n    // specific writer, then it would cause it to never start\n    // flowing again.\n    // So, if this is awaiting a drain, then we just call it now.\n    // If we don't know, then assume that we are waiting for one.\n    if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain();\n  }\n\n  // If the user pushes more data while we're writing to dest then we'll end up\n  // in ondata again. However, we only want to increase awaitDrain once because\n  // dest will only emit one 'drain' event for the multiple writes.\n  // => Introduce a guard on increasing awaitDrain.\n  var increasedAwaitDrain = false;\n  src.on('data', ondata);\n  function ondata(chunk) {\n    debug('ondata');\n    increasedAwaitDrain = false;\n    var ret = dest.write(chunk);\n    if (false === ret && !increasedAwaitDrain) {\n      // If the user unpiped during `dest.write()`, it is possible\n      // to get stuck in a permanently paused state if that write\n      // also returned false.\n      // => Check whether `dest` is still a piping destination.\n      if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) {\n        debug('false write response, pause', src._readableState.awaitDrain);\n        src._readableState.awaitDrain++;\n        increasedAwaitDrain = true;\n      }\n      src.pause();\n    }\n  }\n\n  // if the dest has an error, then stop piping into it.\n  // however, don't suppress the throwing behavior for this.\n  function onerror(er) {\n    debug('onerror', er);\n    unpipe();\n    dest.removeListener('error', onerror);\n    if (EElistenerCount(dest, 'error') === 0) dest.emit('error', er);\n  }\n\n  // Make sure our error handler is attached before userland ones.\n  prependListener(dest, 'error', onerror);\n\n  // Both close and finish should trigger unpipe, but only once.\n  function onclose() {\n    dest.removeListener('finish', onfinish);\n    unpipe();\n  }\n  dest.once('close', onclose);\n  function onfinish() {\n    debug('onfinish');\n    dest.removeListener('close', onclose);\n    unpipe();\n  }\n  dest.once('finish', onfinish);\n\n  function unpipe() {\n    debug('unpipe');\n    src.unpipe(dest);\n  }\n\n  // tell the dest that it's being piped to\n  dest.emit('pipe', src);\n\n  // start the flow if it hasn't been started already.\n  if (!state.flowing) {\n    debug('pipe resume');\n    src.resume();\n  }\n\n  return dest;\n};\n\nfunction pipeOnDrain(src) {\n  return function () {\n    var state = src._readableState;\n    debug('pipeOnDrain', state.awaitDrain);\n    if (state.awaitDrain) state.awaitDrain--;\n    if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) {\n      state.flowing = true;\n      flow(src);\n    }\n  };\n}\n\nReadable.prototype.unpipe = function (dest) {\n  var state = this._readableState;\n  var unpipeInfo = { hasUnpiped: false };\n\n  // if we're not piping anywhere, then do nothing.\n  if (state.pipesCount === 0) return this;\n\n  // just one destination.  most common case.\n  if (state.pipesCount === 1) {\n    // passed in one, but it's not the right one.\n    if (dest && dest !== state.pipes) return this;\n\n    if (!dest) dest = state.pipes;\n\n    // got a match.\n    state.pipes = null;\n    state.pipesCount = 0;\n    state.flowing = false;\n    if (dest) dest.emit('unpipe', this, unpipeInfo);\n    return this;\n  }\n\n  // slow case. multiple pipe destinations.\n\n  if (!dest) {\n    // remove all.\n    var dests = state.pipes;\n    var len = state.pipesCount;\n    state.pipes = null;\n    state.pipesCount = 0;\n    state.flowing = false;\n\n    for (var i = 0; i < len; i++) {\n      dests[i].emit('unpipe', this, unpipeInfo);\n    }return this;\n  }\n\n  // try to find the right one.\n  var index = indexOf(state.pipes, dest);\n  if (index === -1) return this;\n\n  state.pipes.splice(index, 1);\n  state.pipesCount -= 1;\n  if (state.pipesCount === 1) state.pipes = state.pipes[0];\n\n  dest.emit('unpipe', this, unpipeInfo);\n\n  return this;\n};\n\n// set up data events if they are asked for\n// Ensure readable listeners eventually get something\nReadable.prototype.on = function (ev, fn) {\n  var res = Stream.prototype.on.call(this, ev, fn);\n\n  if (ev === 'data') {\n    // Start flowing on next tick if stream isn't explicitly paused\n    if (this._readableState.flowing !== false) this.resume();\n  } else if (ev === 'readable') {\n    var state = this._readableState;\n    if (!state.endEmitted && !state.readableListening) {\n      state.readableListening = state.needReadable = true;\n      state.emittedReadable = false;\n      if (!state.reading) {\n        pna.nextTick(nReadingNextTick, this);\n      } else if (state.length) {\n        emitReadable(this);\n      }\n    }\n  }\n\n  return res;\n};\nReadable.prototype.addListener = Readable.prototype.on;\n\nfunction nReadingNextTick(self) {\n  debug('readable nexttick read 0');\n  self.read(0);\n}\n\n// pause() and resume() are remnants of the legacy readable stream API\n// If the user uses them, then switch into old mode.\nReadable.prototype.resume = function () {\n  var state = this._readableState;\n  if (!state.flowing) {\n    debug('resume');\n    state.flowing = true;\n    resume(this, state);\n  }\n  return this;\n};\n\nfunction resume(stream, state) {\n  if (!state.resumeScheduled) {\n    state.resumeScheduled = true;\n    pna.nextTick(resume_, stream, state);\n  }\n}\n\nfunction resume_(stream, state) {\n  if (!state.reading) {\n    debug('resume read 0');\n    stream.read(0);\n  }\n\n  state.resumeScheduled = false;\n  state.awaitDrain = 0;\n  stream.emit('resume');\n  flow(stream);\n  if (state.flowing && !state.reading) stream.read(0);\n}\n\nReadable.prototype.pause = function () {\n  debug('call pause flowing=%j', this._readableState.flowing);\n  if (false !== this._readableState.flowing) {\n    debug('pause');\n    this._readableState.flowing = false;\n    this.emit('pause');\n  }\n  return this;\n};\n\nfunction flow(stream) {\n  var state = stream._readableState;\n  debug('flow', state.flowing);\n  while (state.flowing && stream.read() !== null) {}\n}\n\n// wrap an old-style stream as the async data source.\n// This is *not* part of the readable stream interface.\n// It is an ugly unfortunate mess of history.\nReadable.prototype.wrap = function (stream) {\n  var _this = this;\n\n  var state = this._readableState;\n  var paused = false;\n\n  stream.on('end', function () {\n    debug('wrapped end');\n    if (state.decoder && !state.ended) {\n      var chunk = state.decoder.end();\n      if (chunk && chunk.length) _this.push(chunk);\n    }\n\n    _this.push(null);\n  });\n\n  stream.on('data', function (chunk) {\n    debug('wrapped data');\n    if (state.decoder) chunk = state.decoder.write(chunk);\n\n    // don't skip over falsy values in objectMode\n    if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return;\n\n    var ret = _this.push(chunk);\n    if (!ret) {\n      paused = true;\n      stream.pause();\n    }\n  });\n\n  // proxy all the other methods.\n  // important when wrapping filters and duplexes.\n  for (var i in stream) {\n    if (this[i] === undefined && typeof stream[i] === 'function') {\n      this[i] = function (method) {\n        return function () {\n          return stream[method].apply(stream, arguments);\n        };\n      }(i);\n    }\n  }\n\n  // proxy certain important events.\n  for (var n = 0; n < kProxyEvents.length; n++) {\n    stream.on(kProxyEvents[n], this.emit.bind(this, kProxyEvents[n]));\n  }\n\n  // when we try to consume some more bytes, simply unpause the\n  // underlying stream.\n  this._read = function (n) {\n    debug('wrapped _read', n);\n    if (paused) {\n      paused = false;\n      stream.resume();\n    }\n  };\n\n  return this;\n};\n\nObject.defineProperty(Readable.prototype, 'readableHighWaterMark', {\n  // making it explicit this property is not enumerable\n  // because otherwise some prototype manipulation in\n  // userland will fail\n  enumerable: false,\n  get: function () {\n    return this._readableState.highWaterMark;\n  }\n});\n\n// exposed for testing purposes only.\nReadable._fromList = fromList;\n\n// Pluck off n bytes from an array of buffers.\n// Length is the combined lengths of all the buffers in the list.\n// This function is designed to be inlinable, so please take care when making\n// changes to the function body.\nfunction fromList(n, state) {\n  // nothing buffered\n  if (state.length === 0) return null;\n\n  var ret;\n  if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) {\n    // read it all, truncate the list\n    if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.head.data;else ret = state.buffer.concat(state.length);\n    state.buffer.clear();\n  } else {\n    // read part of list\n    ret = fromListPartial(n, state.buffer, state.decoder);\n  }\n\n  return ret;\n}\n\n// Extracts only enough buffered data to satisfy the amount requested.\n// This function is designed to be inlinable, so please take care when making\n// changes to the function body.\nfunction fromListPartial(n, list, hasStrings) {\n  var ret;\n  if (n < list.head.data.length) {\n    // slice is the same for buffers and strings\n    ret = list.head.data.slice(0, n);\n    list.head.data = list.head.data.slice(n);\n  } else if (n === list.head.data.length) {\n    // first chunk is a perfect match\n    ret = list.shift();\n  } else {\n    // result spans more than one buffer\n    ret = hasStrings ? copyFromBufferString(n, list) : copyFromBuffer(n, list);\n  }\n  return ret;\n}\n\n// Copies a specified amount of characters from the list of buffered data\n// chunks.\n// This function is designed to be inlinable, so please take care when making\n// changes to the function body.\nfunction copyFromBufferString(n, list) {\n  var p = list.head;\n  var c = 1;\n  var ret = p.data;\n  n -= ret.length;\n  while (p = p.next) {\n    var str = p.data;\n    var nb = n > str.length ? str.length : n;\n    if (nb === str.length) ret += str;else ret += str.slice(0, n);\n    n -= nb;\n    if (n === 0) {\n      if (nb === str.length) {\n        ++c;\n        if (p.next) list.head = p.next;else list.head = list.tail = null;\n      } else {\n        list.head = p;\n        p.data = str.slice(nb);\n      }\n      break;\n    }\n    ++c;\n  }\n  list.length -= c;\n  return ret;\n}\n\n// Copies a specified amount of bytes from the list of buffered data chunks.\n// This function is designed to be inlinable, so please take care when making\n// changes to the function body.\nfunction copyFromBuffer(n, list) {\n  var ret = Buffer.allocUnsafe(n);\n  var p = list.head;\n  var c = 1;\n  p.data.copy(ret);\n  n -= p.data.length;\n  while (p = p.next) {\n    var buf = p.data;\n    var nb = n > buf.length ? buf.length : n;\n    buf.copy(ret, ret.length - n, 0, nb);\n    n -= nb;\n    if (n === 0) {\n      if (nb === buf.length) {\n        ++c;\n        if (p.next) list.head = p.next;else list.head = list.tail = null;\n      } else {\n        list.head = p;\n        p.data = buf.slice(nb);\n      }\n      break;\n    }\n    ++c;\n  }\n  list.length -= c;\n  return ret;\n}\n\nfunction endReadable(stream) {\n  var state = stream._readableState;\n\n  // If we get here before consuming all the bytes, then that is a\n  // bug in node.  Should never happen.\n  if (state.length > 0) throw new Error('\"endReadable()\" called on non-empty stream');\n\n  if (!state.endEmitted) {\n    state.ended = true;\n    pna.nextTick(endReadableNT, state, stream);\n  }\n}\n\nfunction endReadableNT(state, stream) {\n  // Check that we didn't get one last unshift.\n  if (!state.endEmitted && state.length === 0) {\n    state.endEmitted = true;\n    stream.readable = false;\n    stream.emit('end');\n  }\n}\n\nfunction indexOf(xs, x) {\n  for (var i = 0, l = xs.length; i < l; i++) {\n    if (xs[i] === x) return i;\n  }\n  return -1;\n}","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n// a transform stream is a readable/writable stream where you do\n// something with the data.  Sometimes it's called a \"filter\",\n// but that's not a great name for it, since that implies a thing where\n// some bits pass through, and others are simply ignored.  (That would\n// be a valid example of a transform, of course.)\n//\n// While the output is causally related to the input, it's not a\n// necessarily symmetric or synchronous transformation.  For example,\n// a zlib stream might take multiple plain-text writes(), and then\n// emit a single compressed chunk some time in the future.\n//\n// Here's how this works:\n//\n// The Transform stream has all the aspects of the readable and writable\n// stream classes.  When you write(chunk), that calls _write(chunk,cb)\n// internally, and returns false if there's a lot of pending writes\n// buffered up.  When you call read(), that calls _read(n) until\n// there's enough pending readable data buffered up.\n//\n// In a transform stream, the written data is placed in a buffer.  When\n// _read(n) is called, it transforms the queued up data, calling the\n// buffered _write cb's as it consumes chunks.  If consuming a single\n// written chunk would result in multiple output chunks, then the first\n// outputted bit calls the readcb, and subsequent chunks just go into\n// the read buffer, and will cause it to emit 'readable' if necessary.\n//\n// This way, back-pressure is actually determined by the reading side,\n// since _read has to be called to start processing a new chunk.  However,\n// a pathological inflate type of transform can cause excessive buffering\n// here.  For example, imagine a stream where every byte of input is\n// interpreted as an integer from 0-255, and then results in that many\n// bytes of output.  Writing the 4 bytes {ff,ff,ff,ff} would result in\n// 1kb of data being output.  In this case, you could write a very small\n// amount of input, and end up with a very large amount of output.  In\n// such a pathological inflating mechanism, there'd be no way to tell\n// the system to stop doing the transform.  A single 4MB write could\n// cause the system to run out of memory.\n//\n// However, even in such a pathological case, only a single written chunk\n// would be consumed, and then the rest would wait (un-transformed) until\n// the results of the previous transformed chunk were consumed.\n\n'use strict';\n\nmodule.exports = Transform;\n\nvar Duplex = require('./_stream_duplex');\n\n/*<replacement>*/\nvar util = Object.create(require('core-util-is'));\nutil.inherits = require('inherits');\n/*</replacement>*/\n\nutil.inherits(Transform, Duplex);\n\nfunction afterTransform(er, data) {\n  var ts = this._transformState;\n  ts.transforming = false;\n\n  var cb = ts.writecb;\n\n  if (!cb) {\n    return this.emit('error', new Error('write callback called multiple times'));\n  }\n\n  ts.writechunk = null;\n  ts.writecb = null;\n\n  if (data != null) // single equals check for both `null` and `undefined`\n    this.push(data);\n\n  cb(er);\n\n  var rs = this._readableState;\n  rs.reading = false;\n  if (rs.needReadable || rs.length < rs.highWaterMark) {\n    this._read(rs.highWaterMark);\n  }\n}\n\nfunction Transform(options) {\n  if (!(this instanceof Transform)) return new Transform(options);\n\n  Duplex.call(this, options);\n\n  this._transformState = {\n    afterTransform: afterTransform.bind(this),\n    needTransform: false,\n    transforming: false,\n    writecb: null,\n    writechunk: null,\n    writeencoding: null\n  };\n\n  // start out asking for a readable event once data is transformed.\n  this._readableState.needReadable = true;\n\n  // we have implemented the _read method, and done the other things\n  // that Readable wants before the first _read call, so unset the\n  // sync guard flag.\n  this._readableState.sync = false;\n\n  if (options) {\n    if (typeof options.transform === 'function') this._transform = options.transform;\n\n    if (typeof options.flush === 'function') this._flush = options.flush;\n  }\n\n  // When the writable side finishes, then flush out anything remaining.\n  this.on('prefinish', prefinish);\n}\n\nfunction prefinish() {\n  var _this = this;\n\n  if (typeof this._flush === 'function') {\n    this._flush(function (er, data) {\n      done(_this, er, data);\n    });\n  } else {\n    done(this, null, null);\n  }\n}\n\nTransform.prototype.push = function (chunk, encoding) {\n  this._transformState.needTransform = false;\n  return Duplex.prototype.push.call(this, chunk, encoding);\n};\n\n// This is the part where you do stuff!\n// override this function in implementation classes.\n// 'chunk' is an input chunk.\n//\n// Call `push(newChunk)` to pass along transformed output\n// to the readable side.  You may call 'push' zero or more times.\n//\n// Call `cb(err)` when you are done with this chunk.  If you pass\n// an error, then that'll put the hurt on the whole operation.  If you\n// never call cb(), then you'll never get another chunk.\nTransform.prototype._transform = function (chunk, encoding, cb) {\n  throw new Error('_transform() is not implemented');\n};\n\nTransform.prototype._write = function (chunk, encoding, cb) {\n  var ts = this._transformState;\n  ts.writecb = cb;\n  ts.writechunk = chunk;\n  ts.writeencoding = encoding;\n  if (!ts.transforming) {\n    var rs = this._readableState;\n    if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);\n  }\n};\n\n// Doesn't matter what the args are here.\n// _transform does all the work.\n// That we got here means that the readable side wants more data.\nTransform.prototype._read = function (n) {\n  var ts = this._transformState;\n\n  if (ts.writechunk !== null && ts.writecb && !ts.transforming) {\n    ts.transforming = true;\n    this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);\n  } else {\n    // mark that we need a transform, so that any data that comes in\n    // will get processed, now that we've asked for it.\n    ts.needTransform = true;\n  }\n};\n\nTransform.prototype._destroy = function (err, cb) {\n  var _this2 = this;\n\n  Duplex.prototype._destroy.call(this, err, function (err2) {\n    cb(err2);\n    _this2.emit('close');\n  });\n};\n\nfunction done(stream, er, data) {\n  if (er) return stream.emit('error', er);\n\n  if (data != null) // single equals check for both `null` and `undefined`\n    stream.push(data);\n\n  // if there's nothing in the write buffer, then that means\n  // that nothing more will ever be provided\n  if (stream._writableState.length) throw new Error('Calling transform done when ws.length != 0');\n\n  if (stream._transformState.transforming) throw new Error('Calling transform done when still transforming');\n\n  return stream.push(null);\n}","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n// A bit simpler than readable streams.\n// Implement an async ._write(chunk, encoding, cb), and it'll handle all\n// the drain event emission and buffering.\n\n'use strict';\n\n/*<replacement>*/\n\nvar pna = require('process-nextick-args');\n/*</replacement>*/\n\nmodule.exports = Writable;\n\n/* <replacement> */\nfunction WriteReq(chunk, encoding, cb) {\n  this.chunk = chunk;\n  this.encoding = encoding;\n  this.callback = cb;\n  this.next = null;\n}\n\n// It seems a linked list but it is not\n// there will be only 2 of these for each stream\nfunction CorkedRequest(state) {\n  var _this = this;\n\n  this.next = null;\n  this.entry = null;\n  this.finish = function () {\n    onCorkedFinish(_this, state);\n  };\n}\n/* </replacement> */\n\n/*<replacement>*/\nvar asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : pna.nextTick;\n/*</replacement>*/\n\n/*<replacement>*/\nvar Duplex;\n/*</replacement>*/\n\nWritable.WritableState = WritableState;\n\n/*<replacement>*/\nvar util = Object.create(require('core-util-is'));\nutil.inherits = require('inherits');\n/*</replacement>*/\n\n/*<replacement>*/\nvar internalUtil = {\n  deprecate: require('util-deprecate')\n};\n/*</replacement>*/\n\n/*<replacement>*/\nvar Stream = require('./internal/streams/stream');\n/*</replacement>*/\n\n/*<replacement>*/\n\nvar Buffer = require('safe-buffer').Buffer;\nvar OurUint8Array = global.Uint8Array || function () {};\nfunction _uint8ArrayToBuffer(chunk) {\n  return Buffer.from(chunk);\n}\nfunction _isUint8Array(obj) {\n  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;\n}\n\n/*</replacement>*/\n\nvar destroyImpl = require('./internal/streams/destroy');\n\nutil.inherits(Writable, Stream);\n\nfunction nop() {}\n\nfunction WritableState(options, stream) {\n  Duplex = Duplex || require('./_stream_duplex');\n\n  options = options || {};\n\n  // Duplex streams are both readable and writable, but share\n  // the same options object.\n  // However, some cases require setting options to different\n  // values for the readable and the writable sides of the duplex stream.\n  // These options can be provided separately as readableXXX and writableXXX.\n  var isDuplex = stream instanceof Duplex;\n\n  // object stream flag to indicate whether or not this stream\n  // contains buffers or objects.\n  this.objectMode = !!options.objectMode;\n\n  if (isDuplex) this.objectMode = this.objectMode || !!options.writableObjectMode;\n\n  // the point at which write() starts returning false\n  // Note: 0 is a valid value, means that we always return false if\n  // the entire buffer is not flushed immediately on write()\n  var hwm = options.highWaterMark;\n  var writableHwm = options.writableHighWaterMark;\n  var defaultHwm = this.objectMode ? 16 : 16 * 1024;\n\n  if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (writableHwm || writableHwm === 0)) this.highWaterMark = writableHwm;else this.highWaterMark = defaultHwm;\n\n  // cast to ints.\n  this.highWaterMark = Math.floor(this.highWaterMark);\n\n  // if _final has been called\n  this.finalCalled = false;\n\n  // drain event flag.\n  this.needDrain = false;\n  // at the start of calling end()\n  this.ending = false;\n  // when end() has been called, and returned\n  this.ended = false;\n  // when 'finish' is emitted\n  this.finished = false;\n\n  // has it been destroyed\n  this.destroyed = false;\n\n  // should we decode strings into buffers before passing to _write?\n  // this is here so that some node-core streams can optimize string\n  // handling at a lower level.\n  var noDecode = options.decodeStrings === false;\n  this.decodeStrings = !noDecode;\n\n  // Crypto is kind of old and crusty.  Historically, its default string\n  // encoding is 'binary' so we have to make this configurable.\n  // Everything else in the universe uses 'utf8', though.\n  this.defaultEncoding = options.defaultEncoding || 'utf8';\n\n  // not an actual buffer we keep track of, but a measurement\n  // of how much we're waiting to get pushed to some underlying\n  // socket or file.\n  this.length = 0;\n\n  // a flag to see when we're in the middle of a write.\n  this.writing = false;\n\n  // when true all writes will be buffered until .uncork() call\n  this.corked = 0;\n\n  // a flag to be able to tell if the onwrite cb is called immediately,\n  // or on a later tick.  We set this to true at first, because any\n  // actions that shouldn't happen until \"later\" should generally also\n  // not happen before the first write call.\n  this.sync = true;\n\n  // a flag to know if we're processing previously buffered items, which\n  // may call the _write() callback in the same tick, so that we don't\n  // end up in an overlapped onwrite situation.\n  this.bufferProcessing = false;\n\n  // the callback that's passed to _write(chunk,cb)\n  this.onwrite = function (er) {\n    onwrite(stream, er);\n  };\n\n  // the callback that the user supplies to write(chunk,encoding,cb)\n  this.writecb = null;\n\n  // the amount that is being written when _write is called.\n  this.writelen = 0;\n\n  this.bufferedRequest = null;\n  this.lastBufferedRequest = null;\n\n  // number of pending user-supplied write callbacks\n  // this must be 0 before 'finish' can be emitted\n  this.pendingcb = 0;\n\n  // emit prefinish if the only thing we're waiting for is _write cbs\n  // This is relevant for synchronous Transform streams\n  this.prefinished = false;\n\n  // True if the error was already emitted and should not be thrown again\n  this.errorEmitted = false;\n\n  // count buffered requests\n  this.bufferedRequestCount = 0;\n\n  // allocate the first CorkedRequest, there is always\n  // one allocated and free to use, and we maintain at most two\n  this.corkedRequestsFree = new CorkedRequest(this);\n}\n\nWritableState.prototype.getBuffer = function getBuffer() {\n  var current = this.bufferedRequest;\n  var out = [];\n  while (current) {\n    out.push(current);\n    current = current.next;\n  }\n  return out;\n};\n\n(function () {\n  try {\n    Object.defineProperty(WritableState.prototype, 'buffer', {\n      get: internalUtil.deprecate(function () {\n        return this.getBuffer();\n      }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003')\n    });\n  } catch (_) {}\n})();\n\n// Test _writableState for inheritance to account for Duplex streams,\n// whose prototype chain only points to Readable.\nvar realHasInstance;\nif (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') {\n  realHasInstance = Function.prototype[Symbol.hasInstance];\n  Object.defineProperty(Writable, Symbol.hasInstance, {\n    value: function (object) {\n      if (realHasInstance.call(this, object)) return true;\n      if (this !== Writable) return false;\n\n      return object && object._writableState instanceof WritableState;\n    }\n  });\n} else {\n  realHasInstance = function (object) {\n    return object instanceof this;\n  };\n}\n\nfunction Writable(options) {\n  Duplex = Duplex || require('./_stream_duplex');\n\n  // Writable ctor is applied to Duplexes, too.\n  // `realHasInstance` is necessary because using plain `instanceof`\n  // would return false, as no `_writableState` property is attached.\n\n  // Trying to use the custom `instanceof` for Writable here will also break the\n  // Node.js LazyTransform implementation, which has a non-trivial getter for\n  // `_writableState` that would lead to infinite recursion.\n  if (!realHasInstance.call(Writable, this) && !(this instanceof Duplex)) {\n    return new Writable(options);\n  }\n\n  this._writableState = new WritableState(options, this);\n\n  // legacy.\n  this.writable = true;\n\n  if (options) {\n    if (typeof options.write === 'function') this._write = options.write;\n\n    if (typeof options.writev === 'function') this._writev = options.writev;\n\n    if (typeof options.destroy === 'function') this._destroy = options.destroy;\n\n    if (typeof options.final === 'function') this._final = options.final;\n  }\n\n  Stream.call(this);\n}\n\n// Otherwise people can pipe Writable streams, which is just wrong.\nWritable.prototype.pipe = function () {\n  this.emit('error', new Error('Cannot pipe, not readable'));\n};\n\nfunction writeAfterEnd(stream, cb) {\n  var er = new Error('write after end');\n  // TODO: defer error events consistently everywhere, not just the cb\n  stream.emit('error', er);\n  pna.nextTick(cb, er);\n}\n\n// Checks that a user-supplied chunk is valid, especially for the particular\n// mode the stream is in. Currently this means that `null` is never accepted\n// and undefined/non-string values are only allowed in object mode.\nfunction validChunk(stream, state, chunk, cb) {\n  var valid = true;\n  var er = false;\n\n  if (chunk === null) {\n    er = new TypeError('May not write null values to stream');\n  } else if (typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {\n    er = new TypeError('Invalid non-string/buffer chunk');\n  }\n  if (er) {\n    stream.emit('error', er);\n    pna.nextTick(cb, er);\n    valid = false;\n  }\n  return valid;\n}\n\nWritable.prototype.write = function (chunk, encoding, cb) {\n  var state = this._writableState;\n  var ret = false;\n  var isBuf = !state.objectMode && _isUint8Array(chunk);\n\n  if (isBuf && !Buffer.isBuffer(chunk)) {\n    chunk = _uint8ArrayToBuffer(chunk);\n  }\n\n  if (typeof encoding === 'function') {\n    cb = encoding;\n    encoding = null;\n  }\n\n  if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;\n\n  if (typeof cb !== 'function') cb = nop;\n\n  if (state.ended) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) {\n    state.pendingcb++;\n    ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb);\n  }\n\n  return ret;\n};\n\nWritable.prototype.cork = function () {\n  var state = this._writableState;\n\n  state.corked++;\n};\n\nWritable.prototype.uncork = function () {\n  var state = this._writableState;\n\n  if (state.corked) {\n    state.corked--;\n\n    if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);\n  }\n};\n\nWritable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {\n  // node::ParseEncoding() requires lower case.\n  if (typeof encoding === 'string') encoding = encoding.toLowerCase();\n  if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new TypeError('Unknown encoding: ' + encoding);\n  this._writableState.defaultEncoding = encoding;\n  return this;\n};\n\nfunction decodeChunk(state, chunk, encoding) {\n  if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {\n    chunk = Buffer.from(chunk, encoding);\n  }\n  return chunk;\n}\n\nObject.defineProperty(Writable.prototype, 'writableHighWaterMark', {\n  // making it explicit this property is not enumerable\n  // because otherwise some prototype manipulation in\n  // userland will fail\n  enumerable: false,\n  get: function () {\n    return this._writableState.highWaterMark;\n  }\n});\n\n// if we're already writing something, then just put this\n// in the queue, and wait our turn.  Otherwise, call _write\n// If we return false, then we need a drain event, so set that flag.\nfunction writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) {\n  if (!isBuf) {\n    var newChunk = decodeChunk(state, chunk, encoding);\n    if (chunk !== newChunk) {\n      isBuf = true;\n      encoding = 'buffer';\n      chunk = newChunk;\n    }\n  }\n  var len = state.objectMode ? 1 : chunk.length;\n\n  state.length += len;\n\n  var ret = state.length < state.highWaterMark;\n  // we must ensure that previous needDrain will not be reset to false.\n  if (!ret) state.needDrain = true;\n\n  if (state.writing || state.corked) {\n    var last = state.lastBufferedRequest;\n    state.lastBufferedRequest = {\n      chunk: chunk,\n      encoding: encoding,\n      isBuf: isBuf,\n      callback: cb,\n      next: null\n    };\n    if (last) {\n      last.next = state.lastBufferedRequest;\n    } else {\n      state.bufferedRequest = state.lastBufferedRequest;\n    }\n    state.bufferedRequestCount += 1;\n  } else {\n    doWrite(stream, state, false, len, chunk, encoding, cb);\n  }\n\n  return ret;\n}\n\nfunction doWrite(stream, state, writev, len, chunk, encoding, cb) {\n  state.writelen = len;\n  state.writecb = cb;\n  state.writing = true;\n  state.sync = true;\n  if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite);\n  state.sync = false;\n}\n\nfunction onwriteError(stream, state, sync, er, cb) {\n  --state.pendingcb;\n\n  if (sync) {\n    // defer the callback if we are being called synchronously\n    // to avoid piling up things on the stack\n    pna.nextTick(cb, er);\n    // this can emit finish, and it will always happen\n    // after error\n    pna.nextTick(finishMaybe, stream, state);\n    stream._writableState.errorEmitted = true;\n    stream.emit('error', er);\n  } else {\n    // the caller expect this to happen before if\n    // it is async\n    cb(er);\n    stream._writableState.errorEmitted = true;\n    stream.emit('error', er);\n    // this can emit finish, but finish must\n    // always follow error\n    finishMaybe(stream, state);\n  }\n}\n\nfunction onwriteStateUpdate(state) {\n  state.writing = false;\n  state.writecb = null;\n  state.length -= state.writelen;\n  state.writelen = 0;\n}\n\nfunction onwrite(stream, er) {\n  var state = stream._writableState;\n  var sync = state.sync;\n  var cb = state.writecb;\n\n  onwriteStateUpdate(state);\n\n  if (er) onwriteError(stream, state, sync, er, cb);else {\n    // Check if we're actually ready to finish, but don't emit yet\n    var finished = needFinish(state);\n\n    if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {\n      clearBuffer(stream, state);\n    }\n\n    if (sync) {\n      /*<replacement>*/\n      asyncWrite(afterWrite, stream, state, finished, cb);\n      /*</replacement>*/\n    } else {\n      afterWrite(stream, state, finished, cb);\n    }\n  }\n}\n\nfunction afterWrite(stream, state, finished, cb) {\n  if (!finished) onwriteDrain(stream, state);\n  state.pendingcb--;\n  cb();\n  finishMaybe(stream, state);\n}\n\n// Must force callback to be called on nextTick, so that we don't\n// emit 'drain' before the write() consumer gets the 'false' return\n// value, and has a chance to attach a 'drain' listener.\nfunction onwriteDrain(stream, state) {\n  if (state.length === 0 && state.needDrain) {\n    state.needDrain = false;\n    stream.emit('drain');\n  }\n}\n\n// if there's something in the buffer waiting, then process it\nfunction clearBuffer(stream, state) {\n  state.bufferProcessing = true;\n  var entry = state.bufferedRequest;\n\n  if (stream._writev && entry && entry.next) {\n    // Fast case, write everything using _writev()\n    var l = state.bufferedRequestCount;\n    var buffer = new Array(l);\n    var holder = state.corkedRequestsFree;\n    holder.entry = entry;\n\n    var count = 0;\n    var allBuffers = true;\n    while (entry) {\n      buffer[count] = entry;\n      if (!entry.isBuf) allBuffers = false;\n      entry = entry.next;\n      count += 1;\n    }\n    buffer.allBuffers = allBuffers;\n\n    doWrite(stream, state, true, state.length, buffer, '', holder.finish);\n\n    // doWrite is almost always async, defer these to save a bit of time\n    // as the hot path ends with doWrite\n    state.pendingcb++;\n    state.lastBufferedRequest = null;\n    if (holder.next) {\n      state.corkedRequestsFree = holder.next;\n      holder.next = null;\n    } else {\n      state.corkedRequestsFree = new CorkedRequest(state);\n    }\n    state.bufferedRequestCount = 0;\n  } else {\n    // Slow case, write chunks one-by-one\n    while (entry) {\n      var chunk = entry.chunk;\n      var encoding = entry.encoding;\n      var cb = entry.callback;\n      var len = state.objectMode ? 1 : chunk.length;\n\n      doWrite(stream, state, false, len, chunk, encoding, cb);\n      entry = entry.next;\n      state.bufferedRequestCount--;\n      // if we didn't call the onwrite immediately, then\n      // it means that we need to wait until it does.\n      // also, that means that the chunk and cb are currently\n      // being processed, so move the buffer counter past them.\n      if (state.writing) {\n        break;\n      }\n    }\n\n    if (entry === null) state.lastBufferedRequest = null;\n  }\n\n  state.bufferedRequest = entry;\n  state.bufferProcessing = false;\n}\n\nWritable.prototype._write = function (chunk, encoding, cb) {\n  cb(new Error('_write() is not implemented'));\n};\n\nWritable.prototype._writev = null;\n\nWritable.prototype.end = function (chunk, encoding, cb) {\n  var state = this._writableState;\n\n  if (typeof chunk === 'function') {\n    cb = chunk;\n    chunk = null;\n    encoding = null;\n  } else if (typeof encoding === 'function') {\n    cb = encoding;\n    encoding = null;\n  }\n\n  if (chunk !== null && chunk !== undefined) this.write(chunk, encoding);\n\n  // .end() fully uncorks\n  if (state.corked) {\n    state.corked = 1;\n    this.uncork();\n  }\n\n  // ignore unnecessary end() calls.\n  if (!state.ending && !state.finished) endWritable(this, state, cb);\n};\n\nfunction needFinish(state) {\n  return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing;\n}\nfunction callFinal(stream, state) {\n  stream._final(function (err) {\n    state.pendingcb--;\n    if (err) {\n      stream.emit('error', err);\n    }\n    state.prefinished = true;\n    stream.emit('prefinish');\n    finishMaybe(stream, state);\n  });\n}\nfunction prefinish(stream, state) {\n  if (!state.prefinished && !state.finalCalled) {\n    if (typeof stream._final === 'function') {\n      state.pendingcb++;\n      state.finalCalled = true;\n      pna.nextTick(callFinal, stream, state);\n    } else {\n      state.prefinished = true;\n      stream.emit('prefinish');\n    }\n  }\n}\n\nfunction finishMaybe(stream, state) {\n  var need = needFinish(state);\n  if (need) {\n    prefinish(stream, state);\n    if (state.pendingcb === 0) {\n      state.finished = true;\n      stream.emit('finish');\n    }\n  }\n  return need;\n}\n\nfunction endWritable(stream, state, cb) {\n  state.ending = true;\n  finishMaybe(stream, state);\n  if (cb) {\n    if (state.finished) pna.nextTick(cb);else stream.once('finish', cb);\n  }\n  state.ended = true;\n  stream.writable = false;\n}\n\nfunction onCorkedFinish(corkReq, state, err) {\n  var entry = corkReq.entry;\n  corkReq.entry = null;\n  while (entry) {\n    var cb = entry.callback;\n    state.pendingcb--;\n    cb(err);\n    entry = entry.next;\n  }\n  if (state.corkedRequestsFree) {\n    state.corkedRequestsFree.next = corkReq;\n  } else {\n    state.corkedRequestsFree = corkReq;\n  }\n}\n\nObject.defineProperty(Writable.prototype, 'destroyed', {\n  get: function () {\n    if (this._writableState === undefined) {\n      return false;\n    }\n    return this._writableState.destroyed;\n  },\n  set: function (value) {\n    // we ignore the value if the stream\n    // has not been initialized yet\n    if (!this._writableState) {\n      return;\n    }\n\n    // backward compatibility, the user is explicitly\n    // managing destroyed\n    this._writableState.destroyed = value;\n  }\n});\n\nWritable.prototype.destroy = destroyImpl.destroy;\nWritable.prototype._undestroy = destroyImpl.undestroy;\nWritable.prototype._destroy = function (err, cb) {\n  this.end();\n  cb(err);\n};","'use strict';\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nvar Buffer = require('safe-buffer').Buffer;\nvar util = require('util');\n\nfunction copyBuffer(src, target, offset) {\n  src.copy(target, offset);\n}\n\nmodule.exports = function () {\n  function BufferList() {\n    _classCallCheck(this, BufferList);\n\n    this.head = null;\n    this.tail = null;\n    this.length = 0;\n  }\n\n  BufferList.prototype.push = function push(v) {\n    var entry = { data: v, next: null };\n    if (this.length > 0) this.tail.next = entry;else this.head = entry;\n    this.tail = entry;\n    ++this.length;\n  };\n\n  BufferList.prototype.unshift = function unshift(v) {\n    var entry = { data: v, next: this.head };\n    if (this.length === 0) this.tail = entry;\n    this.head = entry;\n    ++this.length;\n  };\n\n  BufferList.prototype.shift = function shift() {\n    if (this.length === 0) return;\n    var ret = this.head.data;\n    if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;\n    --this.length;\n    return ret;\n  };\n\n  BufferList.prototype.clear = function clear() {\n    this.head = this.tail = null;\n    this.length = 0;\n  };\n\n  BufferList.prototype.join = function join(s) {\n    if (this.length === 0) return '';\n    var p = this.head;\n    var ret = '' + p.data;\n    while (p = p.next) {\n      ret += s + p.data;\n    }return ret;\n  };\n\n  BufferList.prototype.concat = function concat(n) {\n    if (this.length === 0) return Buffer.alloc(0);\n    if (this.length === 1) return this.head.data;\n    var ret = Buffer.allocUnsafe(n >>> 0);\n    var p = this.head;\n    var i = 0;\n    while (p) {\n      copyBuffer(p.data, ret, i);\n      i += p.data.length;\n      p = p.next;\n    }\n    return ret;\n  };\n\n  return BufferList;\n}();\n\nif (util && util.inspect && util.inspect.custom) {\n  module.exports.prototype[util.inspect.custom] = function () {\n    var obj = util.inspect({ length: this.length });\n    return this.constructor.name + ' ' + obj;\n  };\n}","'use strict';\n\n/*<replacement>*/\n\nvar pna = require('process-nextick-args');\n/*</replacement>*/\n\n// undocumented cb() API, needed for core, not for public API\nfunction destroy(err, cb) {\n  var _this = this;\n\n  var readableDestroyed = this._readableState && this._readableState.destroyed;\n  var writableDestroyed = this._writableState && this._writableState.destroyed;\n\n  if (readableDestroyed || writableDestroyed) {\n    if (cb) {\n      cb(err);\n    } else if (err && (!this._writableState || !this._writableState.errorEmitted)) {\n      pna.nextTick(emitErrorNT, this, err);\n    }\n    return this;\n  }\n\n  // we set destroyed to true before firing error callbacks in order\n  // to make it re-entrance safe in case destroy() is called within callbacks\n\n  if (this._readableState) {\n    this._readableState.destroyed = true;\n  }\n\n  // if this is a duplex stream mark the writable part as destroyed as well\n  if (this._writableState) {\n    this._writableState.destroyed = true;\n  }\n\n  this._destroy(err || null, function (err) {\n    if (!cb && err) {\n      pna.nextTick(emitErrorNT, _this, err);\n      if (_this._writableState) {\n        _this._writableState.errorEmitted = true;\n      }\n    } else if (cb) {\n      cb(err);\n    }\n  });\n\n  return this;\n}\n\nfunction undestroy() {\n  if (this._readableState) {\n    this._readableState.destroyed = false;\n    this._readableState.reading = false;\n    this._readableState.ended = false;\n    this._readableState.endEmitted = false;\n  }\n\n  if (this._writableState) {\n    this._writableState.destroyed = false;\n    this._writableState.ended = false;\n    this._writableState.ending = false;\n    this._writableState.finished = false;\n    this._writableState.errorEmitted = false;\n  }\n}\n\nfunction emitErrorNT(self, err) {\n  self.emit('error', err);\n}\n\nmodule.exports = {\n  destroy: destroy,\n  undestroy: undestroy\n};","module.exports = require('events').EventEmitter;\n","/* eslint-disable node/no-deprecated-api */\nvar buffer = require('buffer')\nvar Buffer = buffer.Buffer\n\n// alternative to using Object.keys for old browsers\nfunction copyProps (src, dst) {\n  for (var key in src) {\n    dst[key] = src[key]\n  }\n}\nif (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {\n  module.exports = buffer\n} else {\n  // Copy properties from require('buffer')\n  copyProps(buffer, exports)\n  exports.Buffer = SafeBuffer\n}\n\nfunction SafeBuffer (arg, encodingOrOffset, length) {\n  return Buffer(arg, encodingOrOffset, length)\n}\n\n// Copy static methods from Buffer\ncopyProps(Buffer, SafeBuffer)\n\nSafeBuffer.from = function (arg, encodingOrOffset, length) {\n  if (typeof arg === 'number') {\n    throw new TypeError('Argument must not be a number')\n  }\n  return Buffer(arg, encodingOrOffset, length)\n}\n\nSafeBuffer.alloc = function (size, fill, encoding) {\n  if (typeof size !== 'number') {\n    throw new TypeError('Argument must be a number')\n  }\n  var buf = Buffer(size)\n  if (fill !== undefined) {\n    if (typeof encoding === 'string') {\n      buf.fill(fill, encoding)\n    } else {\n      buf.fill(fill)\n    }\n  } else {\n    buf.fill(0)\n  }\n  return buf\n}\n\nSafeBuffer.allocUnsafe = function (size) {\n  if (typeof size !== 'number') {\n    throw new TypeError('Argument must be a number')\n  }\n  return Buffer(size)\n}\n\nSafeBuffer.allocUnsafeSlow = function (size) {\n  if (typeof size !== 'number') {\n    throw new TypeError('Argument must be a number')\n  }\n  return buffer.SlowBuffer(size)\n}\n","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n'use strict';\n\n/*<replacement>*/\n\nvar Buffer = require('safe-buffer').Buffer;\n/*</replacement>*/\n\nvar isEncoding = Buffer.isEncoding || function (encoding) {\n  encoding = '' + encoding;\n  switch (encoding && encoding.toLowerCase()) {\n    case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw':\n      return true;\n    default:\n      return false;\n  }\n};\n\nfunction _normalizeEncoding(enc) {\n  if (!enc) return 'utf8';\n  var retried;\n  while (true) {\n    switch (enc) {\n      case 'utf8':\n      case 'utf-8':\n        return 'utf8';\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return 'utf16le';\n      case 'latin1':\n      case 'binary':\n        return 'latin1';\n      case 'base64':\n      case 'ascii':\n      case 'hex':\n        return enc;\n      default:\n        if (retried) return; // undefined\n        enc = ('' + enc).toLowerCase();\n        retried = true;\n    }\n  }\n};\n\n// Do not cache `Buffer.isEncoding` when checking encoding names as some\n// modules monkey-patch it to support additional encodings\nfunction normalizeEncoding(enc) {\n  var nenc = _normalizeEncoding(enc);\n  if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc);\n  return nenc || enc;\n}\n\n// StringDecoder provides an interface for efficiently splitting a series of\n// buffers into a series of JS strings without breaking apart multi-byte\n// characters.\nexports.StringDecoder = StringDecoder;\nfunction StringDecoder(encoding) {\n  this.encoding = normalizeEncoding(encoding);\n  var nb;\n  switch (this.encoding) {\n    case 'utf16le':\n      this.text = utf16Text;\n      this.end = utf16End;\n      nb = 4;\n      break;\n    case 'utf8':\n      this.fillLast = utf8FillLast;\n      nb = 4;\n      break;\n    case 'base64':\n      this.text = base64Text;\n      this.end = base64End;\n      nb = 3;\n      break;\n    default:\n      this.write = simpleWrite;\n      this.end = simpleEnd;\n      return;\n  }\n  this.lastNeed = 0;\n  this.lastTotal = 0;\n  this.lastChar = Buffer.allocUnsafe(nb);\n}\n\nStringDecoder.prototype.write = function (buf) {\n  if (buf.length === 0) return '';\n  var r;\n  var i;\n  if (this.lastNeed) {\n    r = this.fillLast(buf);\n    if (r === undefined) return '';\n    i = this.lastNeed;\n    this.lastNeed = 0;\n  } else {\n    i = 0;\n  }\n  if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i);\n  return r || '';\n};\n\nStringDecoder.prototype.end = utf8End;\n\n// Returns only complete characters in a Buffer\nStringDecoder.prototype.text = utf8Text;\n\n// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer\nStringDecoder.prototype.fillLast = function (buf) {\n  if (this.lastNeed <= buf.length) {\n    buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed);\n    return this.lastChar.toString(this.encoding, 0, this.lastTotal);\n  }\n  buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length);\n  this.lastNeed -= buf.length;\n};\n\n// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a\n// continuation byte. If an invalid byte is detected, -2 is returned.\nfunction utf8CheckByte(byte) {\n  if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4;\n  return byte >> 6 === 0x02 ? -1 : -2;\n}\n\n// Checks at most 3 bytes at the end of a Buffer in order to detect an\n// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4)\n// needed to complete the UTF-8 character (if applicable) are returned.\nfunction utf8CheckIncomplete(self, buf, i) {\n  var j = buf.length - 1;\n  if (j < i) return 0;\n  var nb = utf8CheckByte(buf[j]);\n  if (nb >= 0) {\n    if (nb > 0) self.lastNeed = nb - 1;\n    return nb;\n  }\n  if (--j < i || nb === -2) return 0;\n  nb = utf8CheckByte(buf[j]);\n  if (nb >= 0) {\n    if (nb > 0) self.lastNeed = nb - 2;\n    return nb;\n  }\n  if (--j < i || nb === -2) return 0;\n  nb = utf8CheckByte(buf[j]);\n  if (nb >= 0) {\n    if (nb > 0) {\n      if (nb === 2) nb = 0;else self.lastNeed = nb - 3;\n    }\n    return nb;\n  }\n  return 0;\n}\n\n// Validates as many continuation bytes for a multi-byte UTF-8 character as\n// needed or are available. If we see a non-continuation byte where we expect\n// one, we \"replace\" the validated continuation bytes we've seen so far with\n// a single UTF-8 replacement character ('\\ufffd'), to match v8's UTF-8 decoding\n// behavior. The continuation byte check is included three times in the case\n// where all of the continuation bytes for a character exist in the same buffer.\n// It is also done this way as a slight performance increase instead of using a\n// loop.\nfunction utf8CheckExtraBytes(self, buf, p) {\n  if ((buf[0] & 0xC0) !== 0x80) {\n    self.lastNeed = 0;\n    return '\\ufffd';\n  }\n  if (self.lastNeed > 1 && buf.length > 1) {\n    if ((buf[1] & 0xC0) !== 0x80) {\n      self.lastNeed = 1;\n      return '\\ufffd';\n    }\n    if (self.lastNeed > 2 && buf.length > 2) {\n      if ((buf[2] & 0xC0) !== 0x80) {\n        self.lastNeed = 2;\n        return '\\ufffd';\n      }\n    }\n  }\n}\n\n// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer.\nfunction utf8FillLast(buf) {\n  var p = this.lastTotal - this.lastNeed;\n  var r = utf8CheckExtraBytes(this, buf, p);\n  if (r !== undefined) return r;\n  if (this.lastNeed <= buf.length) {\n    buf.copy(this.lastChar, p, 0, this.lastNeed);\n    return this.lastChar.toString(this.encoding, 0, this.lastTotal);\n  }\n  buf.copy(this.lastChar, p, 0, buf.length);\n  this.lastNeed -= buf.length;\n}\n\n// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a\n// partial character, the character's bytes are buffered until the required\n// number of bytes are available.\nfunction utf8Text(buf, i) {\n  var total = utf8CheckIncomplete(this, buf, i);\n  if (!this.lastNeed) return buf.toString('utf8', i);\n  this.lastTotal = total;\n  var end = buf.length - (total - this.lastNeed);\n  buf.copy(this.lastChar, 0, end);\n  return buf.toString('utf8', i, end);\n}\n\n// For UTF-8, a replacement character is added when ending on a partial\n// character.\nfunction utf8End(buf) {\n  var r = buf && buf.length ? this.write(buf) : '';\n  if (this.lastNeed) return r + '\\ufffd';\n  return r;\n}\n\n// UTF-16LE typically needs two bytes per character, but even if we have an even\n// number of bytes available, we need to check if we end on a leading/high\n// surrogate. In that case, we need to wait for the next two bytes in order to\n// decode the last character properly.\nfunction utf16Text(buf, i) {\n  if ((buf.length - i) % 2 === 0) {\n    var r = buf.toString('utf16le', i);\n    if (r) {\n      var c = r.charCodeAt(r.length - 1);\n      if (c >= 0xD800 && c <= 0xDBFF) {\n        this.lastNeed = 2;\n        this.lastTotal = 4;\n        this.lastChar[0] = buf[buf.length - 2];\n        this.lastChar[1] = buf[buf.length - 1];\n        return r.slice(0, -1);\n      }\n    }\n    return r;\n  }\n  this.lastNeed = 1;\n  this.lastTotal = 2;\n  this.lastChar[0] = buf[buf.length - 1];\n  return buf.toString('utf16le', i, buf.length - 1);\n}\n\n// For UTF-16LE we do not explicitly append special replacement characters if we\n// end on a partial character, we simply let v8 handle that.\nfunction utf16End(buf) {\n  var r = buf && buf.length ? this.write(buf) : '';\n  if (this.lastNeed) {\n    var end = this.lastTotal - this.lastNeed;\n    return r + this.lastChar.toString('utf16le', 0, end);\n  }\n  return r;\n}\n\nfunction base64Text(buf, i) {\n  var n = (buf.length - i) % 3;\n  if (n === 0) return buf.toString('base64', i);\n  this.lastNeed = 3 - n;\n  this.lastTotal = 3;\n  if (n === 1) {\n    this.lastChar[0] = buf[buf.length - 1];\n  } else {\n    this.lastChar[0] = buf[buf.length - 2];\n    this.lastChar[1] = buf[buf.length - 1];\n  }\n  return buf.toString('base64', i, buf.length - n);\n}\n\nfunction base64End(buf) {\n  var r = buf && buf.length ? this.write(buf) : '';\n  if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed);\n  return r;\n}\n\n// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex)\nfunction simpleWrite(buf) {\n  return buf.toString(this.encoding);\n}\n\nfunction simpleEnd(buf) {\n  return buf && buf.length ? this.write(buf) : '';\n}","module.exports = require('./readable').PassThrough\n","exports = module.exports = require('./lib/_stream_readable.js');\nexports.Stream = exports;\nexports.Readable = exports;\nexports.Writable = require('./lib/_stream_writable.js');\nexports.Duplex = require('./lib/_stream_duplex.js');\nexports.Transform = require('./lib/_stream_transform.js');\nexports.PassThrough = require('./lib/_stream_passthrough.js');\n","module.exports = require('./readable').Transform\n","module.exports = require('./lib/_stream_writable.js');\n","'use strict';\n\nvar $Object = Object;\nvar $TypeError = TypeError;\n\nmodule.exports = function flags() {\n\tif (this != null && this !== $Object(this)) {\n\t\tthrow new $TypeError('RegExp.prototype.flags getter called on non-object');\n\t}\n\tvar result = '';\n\tif (this.global) {\n\t\tresult += 'g';\n\t}\n\tif (this.ignoreCase) {\n\t\tresult += 'i';\n\t}\n\tif (this.multiline) {\n\t\tresult += 'm';\n\t}\n\tif (this.dotAll) {\n\t\tresult += 's';\n\t}\n\tif (this.unicode) {\n\t\tresult += 'u';\n\t}\n\tif (this.sticky) {\n\t\tresult += 'y';\n\t}\n\treturn result;\n};\n","'use strict';\n\nvar define = require('define-properties');\nvar callBind = require('call-bind');\n\nvar implementation = require('./implementation');\nvar getPolyfill = require('./polyfill');\nvar shim = require('./shim');\n\nvar flagsBound = callBind(implementation);\n\ndefine(flagsBound, {\n\tgetPolyfill: getPolyfill,\n\timplementation: implementation,\n\tshim: shim\n});\n\nmodule.exports = flagsBound;\n","'use strict';\n\nvar implementation = require('./implementation');\n\nvar supportsDescriptors = require('define-properties').supportsDescriptors;\nvar $gOPD = Object.getOwnPropertyDescriptor;\nvar $TypeError = TypeError;\n\nmodule.exports = function getPolyfill() {\n\tif (!supportsDescriptors) {\n\t\tthrow new $TypeError('RegExp.prototype.flags requires a true ES5 environment that supports property descriptors');\n\t}\n\tif ((/a/mig).flags === 'gim') {\n\t\tvar descriptor = $gOPD(RegExp.prototype, 'flags');\n\t\tif (descriptor && typeof descriptor.get === 'function' && typeof (/a/).dotAll === 'boolean') {\n\t\t\treturn descriptor.get;\n\t\t}\n\t}\n\treturn implementation;\n};\n","'use strict';\n\nvar supportsDescriptors = require('define-properties').supportsDescriptors;\nvar getPolyfill = require('./polyfill');\nvar gOPD = Object.getOwnPropertyDescriptor;\nvar defineProperty = Object.defineProperty;\nvar TypeErr = TypeError;\nvar getProto = Object.getPrototypeOf;\nvar regex = /a/;\n\nmodule.exports = function shimFlags() {\n\tif (!supportsDescriptors || !getProto) {\n\t\tthrow new TypeErr('RegExp.prototype.flags requires a true ES5 environment that supports property descriptors');\n\t}\n\tvar polyfill = getPolyfill();\n\tvar proto = getProto(regex);\n\tvar descriptor = gOPD(proto, 'flags');\n\tif (!descriptor || descriptor.get !== polyfill) {\n\t\tdefineProperty(proto, 'flags', {\n\t\t\tconfigurable: true,\n\t\t\tenumerable: false,\n\t\t\tget: polyfill\n\t\t});\n\t}\n\treturn polyfill;\n};\n","var through = require('through');\nvar nextTick = typeof setImmediate !== 'undefined'\n    ? setImmediate\n    : process.nextTick\n;\n\nmodule.exports = function (write, end) {\n    var tr = through(write, end);\n    tr.pause();\n    var resume = tr.resume;\n    var pause = tr.pause;\n    var paused = false;\n    \n    tr.pause = function () {\n        paused = true;\n        return pause.apply(this, arguments);\n    };\n    \n    tr.resume = function () {\n        paused = false;\n        return resume.apply(this, arguments);\n    };\n    \n    nextTick(function () {\n        if (!paused) tr.resume();\n    });\n    \n    return tr;\n};\n","'use strict';\n\nvar GetIntrinsic = require('get-intrinsic');\nvar callBound = require('call-bind/callBound');\nvar inspect = require('object-inspect');\n\nvar $TypeError = GetIntrinsic('%TypeError%');\nvar $WeakMap = GetIntrinsic('%WeakMap%', true);\nvar $Map = GetIntrinsic('%Map%', true);\n\nvar $weakMapGet = callBound('WeakMap.prototype.get', true);\nvar $weakMapSet = callBound('WeakMap.prototype.set', true);\nvar $weakMapHas = callBound('WeakMap.prototype.has', true);\nvar $mapGet = callBound('Map.prototype.get', true);\nvar $mapSet = callBound('Map.prototype.set', true);\nvar $mapHas = callBound('Map.prototype.has', true);\n\n/*\n * This function traverses the list returning the node corresponding to the\n * given key.\n *\n * That node is also moved to the head of the list, so that if it's accessed\n * again we don't need to traverse the whole list. By doing so, all the recently\n * used nodes can be accessed relatively quickly.\n */\nvar listGetNode = function (list, key) { // eslint-disable-line consistent-return\n\tfor (var prev = list, curr; (curr = prev.next) !== null; prev = curr) {\n\t\tif (curr.key === key) {\n\t\t\tprev.next = curr.next;\n\t\t\tcurr.next = list.next;\n\t\t\tlist.next = curr; // eslint-disable-line no-param-reassign\n\t\t\treturn curr;\n\t\t}\n\t}\n};\n\nvar listGet = function (objects, key) {\n\tvar node = listGetNode(objects, key);\n\treturn node && node.value;\n};\nvar listSet = function (objects, key, value) {\n\tvar node = listGetNode(objects, key);\n\tif (node) {\n\t\tnode.value = value;\n\t} else {\n\t\t// Prepend the new node to the beginning of the list\n\t\tobjects.next = { // eslint-disable-line no-param-reassign\n\t\t\tkey: key,\n\t\t\tnext: objects.next,\n\t\t\tvalue: value\n\t\t};\n\t}\n};\nvar listHas = function (objects, key) {\n\treturn !!listGetNode(objects, key);\n};\n\nmodule.exports = function getSideChannel() {\n\tvar $wm;\n\tvar $m;\n\tvar $o;\n\tvar channel = {\n\t\tassert: function (key) {\n\t\t\tif (!channel.has(key)) {\n\t\t\t\tthrow new $TypeError('Side channel does not contain ' + inspect(key));\n\t\t\t}\n\t\t},\n\t\tget: function (key) { // eslint-disable-line consistent-return\n\t\t\tif ($WeakMap && key && (typeof key === 'object' || typeof key === 'function')) {\n\t\t\t\tif ($wm) {\n\t\t\t\t\treturn $weakMapGet($wm, key);\n\t\t\t\t}\n\t\t\t} else if ($Map) {\n\t\t\t\tif ($m) {\n\t\t\t\t\treturn $mapGet($m, key);\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tif ($o) { // eslint-disable-line no-lonely-if\n\t\t\t\t\treturn listGet($o, key);\n\t\t\t\t}\n\t\t\t}\n\t\t},\n\t\thas: function (key) {\n\t\t\tif ($WeakMap && key && (typeof key === 'object' || typeof key === 'function')) {\n\t\t\t\tif ($wm) {\n\t\t\t\t\treturn $weakMapHas($wm, key);\n\t\t\t\t}\n\t\t\t} else if ($Map) {\n\t\t\t\tif ($m) {\n\t\t\t\t\treturn $mapHas($m, key);\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tif ($o) { // eslint-disable-line no-lonely-if\n\t\t\t\t\treturn listHas($o, key);\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn false;\n\t\t},\n\t\tset: function (key, value) {\n\t\t\tif ($WeakMap && key && (typeof key === 'object' || typeof key === 'function')) {\n\t\t\t\tif (!$wm) {\n\t\t\t\t\t$wm = new $WeakMap();\n\t\t\t\t}\n\t\t\t\t$weakMapSet($wm, key, value);\n\t\t\t} else if ($Map) {\n\t\t\t\tif (!$m) {\n\t\t\t\t\t$m = new $Map();\n\t\t\t\t}\n\t\t\t\t$mapSet($m, key, value);\n\t\t\t} else {\n\t\t\t\tif (!$o) {\n\t\t\t\t\t/*\n\t\t\t\t\t * Initialize the linked list as an empty node, so that we don't have\n\t\t\t\t\t * to special-case handling of the first node: we can always refer to\n\t\t\t\t\t * it as (previous node).next, instead of something like (list).head\n\t\t\t\t\t */\n\t\t\t\t\t$o = { key: {}, next: null };\n\t\t\t\t}\n\t\t\t\tlistSet($o, key, value);\n\t\t\t}\n\t\t}\n\t};\n\treturn channel;\n};\n","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\nmodule.exports = Stream;\n\nvar EE = require('events').EventEmitter;\nvar inherits = require('inherits');\n\ninherits(Stream, EE);\nStream.Readable = require('readable-stream/readable.js');\nStream.Writable = require('readable-stream/writable.js');\nStream.Duplex = require('readable-stream/duplex.js');\nStream.Transform = require('readable-stream/transform.js');\nStream.PassThrough = require('readable-stream/passthrough.js');\n\n// Backwards-compat with node 0.4.x\nStream.Stream = Stream;\n\n\n\n// old-style streams.  Note that the pipe method (the only relevant\n// part of this class) is overridden in the Readable class.\n\nfunction Stream() {\n  EE.call(this);\n}\n\nStream.prototype.pipe = function(dest, options) {\n  var source = this;\n\n  function ondata(chunk) {\n    if (dest.writable) {\n      if (false === dest.write(chunk) && source.pause) {\n        source.pause();\n      }\n    }\n  }\n\n  source.on('data', ondata);\n\n  function ondrain() {\n    if (source.readable && source.resume) {\n      source.resume();\n    }\n  }\n\n  dest.on('drain', ondrain);\n\n  // If the 'end' option is not supplied, dest.end() will be called when\n  // source gets the 'end' or 'close' events.  Only dest.end() once.\n  if (!dest._isStdio && (!options || options.end !== false)) {\n    source.on('end', onend);\n    source.on('close', onclose);\n  }\n\n  var didOnEnd = false;\n  function onend() {\n    if (didOnEnd) return;\n    didOnEnd = true;\n\n    dest.end();\n  }\n\n\n  function onclose() {\n    if (didOnEnd) return;\n    didOnEnd = true;\n\n    if (typeof dest.destroy === 'function') dest.destroy();\n  }\n\n  // don't leave dangling pipes when there are errors.\n  function onerror(er) {\n    cleanup();\n    if (EE.listenerCount(this, 'error') === 0) {\n      throw er; // Unhandled stream error in pipe.\n    }\n  }\n\n  source.on('error', onerror);\n  dest.on('error', onerror);\n\n  // remove all the event listeners that were added.\n  function cleanup() {\n    source.removeListener('data', ondata);\n    dest.removeListener('drain', ondrain);\n\n    source.removeListener('end', onend);\n    source.removeListener('close', onclose);\n\n    source.removeListener('error', onerror);\n    dest.removeListener('error', onerror);\n\n    source.removeListener('end', cleanup);\n    source.removeListener('close', cleanup);\n\n    dest.removeListener('close', cleanup);\n  }\n\n  source.on('end', cleanup);\n  source.on('close', cleanup);\n\n  dest.on('close', cleanup);\n\n  dest.emit('pipe', source);\n\n  // Allow for unix-like usage: A.pipe(B).pipe(C)\n  return dest;\n};\n","'use strict';\n\nvar RequireObjectCoercible = require('es-abstract/2021/RequireObjectCoercible');\nvar ToString = require('es-abstract/2021/ToString');\nvar callBound = require('call-bind/callBound');\nvar $replace = callBound('String.prototype.replace');\n\n/* eslint-disable no-control-regex */\nvar leftWhitespace = /^[\\x09\\x0A\\x0B\\x0C\\x0D\\x20\\xA0\\u1680\\u180E\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000\\u2028\\u2029\\uFEFF]+/;\nvar rightWhitespace = /[\\x09\\x0A\\x0B\\x0C\\x0D\\x20\\xA0\\u1680\\u180E\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000\\u2028\\u2029\\uFEFF]+$/;\n/* eslint-enable no-control-regex */\n\nmodule.exports = function trim() {\n\tvar S = ToString(RequireObjectCoercible(this));\n\treturn $replace($replace(S, leftWhitespace, ''), rightWhitespace, '');\n};\n","'use strict';\n\nvar callBind = require('call-bind');\nvar define = require('define-properties');\n\nvar implementation = require('./implementation');\nvar getPolyfill = require('./polyfill');\nvar shim = require('./shim');\n\nvar boundTrim = callBind(getPolyfill());\n\ndefine(boundTrim, {\n\tgetPolyfill: getPolyfill,\n\timplementation: implementation,\n\tshim: shim\n});\n\nmodule.exports = boundTrim;\n","'use strict';\n\nvar implementation = require('./implementation');\n\nvar zeroWidthSpace = '\\u200b';\n\nmodule.exports = function getPolyfill() {\n\tif (String.prototype.trim && zeroWidthSpace.trim() === zeroWidthSpace) {\n\t\treturn String.prototype.trim;\n\t}\n\treturn implementation;\n};\n","'use strict';\n\nvar define = require('define-properties');\nvar getPolyfill = require('./polyfill');\n\nmodule.exports = function shimStringTrim() {\n\tvar polyfill = getPolyfill();\n\tdefine(String.prototype, { trim: polyfill }, {\n\t\ttrim: function testTrim() {\n\t\t\treturn String.prototype.trim !== polyfill;\n\t\t}\n\t});\n\treturn polyfill;\n};\n","'use strict';\n\nvar defined = require('defined');\nvar createDefaultStream = require('./lib/default_stream');\nvar Test = require('./lib/test');\nvar createResult = require('./lib/results');\nvar through = require('through');\n\nvar canEmitExit = typeof process !== 'undefined' && process\n    && typeof process.on === 'function' && process.browser !== true;\nvar canExit = typeof process !== 'undefined' && process\n    && typeof process.exit === 'function';\n\nmodule.exports = (function () {\n    var wait = false;\n    var harness;\n    var lazyLoad = function () {\n        // eslint-disable-next-line no-invalid-this\n        return getHarness().apply(this, arguments);\n    };\n\n    lazyLoad.wait = function () {\n        wait = true;\n    };\n\n    lazyLoad.run = function () {\n        var run = getHarness().run;\n\n        if (run) { run(); }\n    };\n\n    lazyLoad.only = function () {\n        return getHarness().only.apply(this, arguments);\n    };\n\n    lazyLoad.createStream = function (opts) {\n        var options = opts || {};\n        if (!harness) {\n            var output = through();\n            getHarness({ stream: output, objectMode: options.objectMode });\n            return output;\n        }\n        return harness.createStream(options);\n    };\n\n    lazyLoad.onFinish = function () {\n        return getHarness().onFinish.apply(this, arguments);\n    };\n\n    lazyLoad.onFailure = function () {\n        return getHarness().onFailure.apply(this, arguments);\n    };\n\n    lazyLoad.getHarness = getHarness;\n\n    return lazyLoad;\n\n    function getHarness(opts) {\n        if (!opts) { opts = {}; }\n        opts.autoclose = !canEmitExit;\n        if (!harness) { harness = createExitHarness(opts, wait); }\n        return harness;\n    }\n}());\n\nfunction createExitHarness(conf, wait) {\n    var config = conf || {};\n    var harness = createHarness({\n        autoclose: defined(config.autoclose, false),\n        noOnly: defined(conf.noOnly, defined(process.env.NODE_TAPE_NO_ONLY_TEST, false))\n    });\n    var running = false;\n    var ended = false;\n\n    if (wait) {\n        harness.run = run;\n    } else {\n        run();\n    }\n\n    if (config.exit === false) { return harness; }\n    if (!canEmitExit || !canExit) { return harness; }\n\n    process.on('exit', function (code) {\n        // let the process exit cleanly.\n        if (typeof code === 'number' && code !== 0) {\n            return;\n        }\n\n        if (!ended) {\n            var only = harness._results._only;\n            for (var i = 0; i < harness._tests.length; i++) {\n                var t = harness._tests[i];\n                if (!only || t === only) {\n                    t._exit();\n                }\n            }\n        }\n        harness.close();\n\n        process.removeAllListeners('exit'); // necessary for node v0.6\n        process.exit(code || harness._exitCode); // eslint-disable-line no-process-exit\n    });\n\n    return harness;\n\n    function run() {\n        if (running) { return; }\n        running = true;\n        var stream = harness.createStream({ objectMode: config.objectMode });\n        var es = stream.pipe(config.stream || createDefaultStream());\n        if (canEmitExit) {\n            // TODO: use `err` arg?\n            // eslint-disable-next-line no-unused-vars\n            es.on('error', function (err) { harness._exitCode = 1; });\n        }\n        stream.on('end', function () { ended = true; });\n    }\n}\n\nmodule.exports.createHarness = createHarness;\nmodule.exports.Test = Test;\nmodule.exports.test = module.exports; // tap compat\nmodule.exports.test.skip = Test.skip;\n\nfunction createHarness(conf_) {\n    var results = createResult();\n    if (!conf_ || conf_.autoclose !== false) {\n        results.once('done', function () { results.close(); });\n    }\n\n    var test = function (name, conf, cb) {\n        var t = new Test(name, conf, cb);\n        test._tests.push(t);\n\n        (function inspectCode(st) {\n            st.on('test', function sub(st_) {\n                inspectCode(st_);\n            });\n            st.on('result', function (r) {\n                if (!r.todo && !r.ok && typeof r !== 'string') { test._exitCode = 1; }\n            });\n        }(t));\n\n        results.push(t);\n        return t;\n    };\n    test._results = results;\n\n    test._tests = [];\n\n    test.createStream = function (opts) {\n        return results.createStream(opts);\n    };\n\n    test.onFinish = function (cb) {\n        results.on('done', cb);\n    };\n\n    test.onFailure = function (cb) {\n        results.on('fail', cb);\n    };\n\n    var only = false;\n    test.only = function () {\n        if (only) { throw new Error('there can only be one only test'); }\n        if (conf_.noOnly) { throw new Error('`only` tests are prohibited'); }\n        only = true;\n        var t = test.apply(null, arguments);\n        results.only(t);\n        return t;\n    };\n    test._exitCode = 0;\n\n    test.close = function () { results.close(); };\n\n    return test;\n}\n","'use strict';\n\nvar through = require('through');\nvar fs = require('fs');\n\nmodule.exports = function () {\n    var line = '';\n    var stream = through(write, flush);\n    return stream;\n\n    function write(buf) {\n        for (var i = 0; i < buf.length; i++) {\n            var c = typeof buf === 'string'\n                ? buf.charAt(i)\n                : String.fromCharCode(buf[i]);\n            if (c === '\\n') {\n                flush();\n            } else {\n                line += c;\n            }\n        }\n    }\n\n    function flush() {\n        if (fs.writeSync && (/^win/).test(process.platform)) {\n            try {\n                fs.writeSync(1, line + '\\n');\n            } catch (e) {\n                stream.emit('error', e);\n            }\n        } else {\n            try {\n                console.log(line); // eslint-disable-line no-console\n            } catch (e) {\n                stream.emit('error', e);\n            }\n        }\n        line = '';\n    }\n};\n","'use strict';\n\nvar defined = require('defined');\nvar EventEmitter = require('events').EventEmitter;\nvar inherits = require('inherits');\nvar through = require('through');\nvar resumer = require('resumer');\nvar inspect = require('object-inspect');\nvar callBound = require('call-bind/callBound');\nvar has = require('has');\nvar regexpTest = callBound('RegExp.prototype.test');\nvar $split = callBound('String.prototype.split');\nvar $replace = callBound('String.prototype.replace');\nvar $shift = callBound('Array.prototype.shift');\nvar $push = callBound('Array.prototype.push');\nvar yamlIndicators = /:|-|\\?/;\nvar nextTick = typeof setImmediate !== 'undefined'\n    ? setImmediate\n    : process.nextTick;\nmodule.exports = Results;\ninherits(Results, EventEmitter);\n\nfunction coalesceWhiteSpaces(str) {\n    return $replace(String(str), /\\s+/g, ' ');\n}\n\nfunction Results() {\n    if (!(this instanceof Results)) { return new Results(); }\n    this.count = 0;\n    this.fail = 0;\n    this.pass = 0;\n    this.todo = 0;\n    this._stream = through();\n    this.tests = [];\n    this._only = null;\n    this._isRunning = false;\n}\n\nResults.prototype.createStream = function (opts) {\n    if (!opts) { opts = {}; }\n    var self = this;\n    var output;\n    var testId = 0;\n    if (opts.objectMode) {\n        output = through();\n        self.on('_push', function ontest(t, extra) {\n            if (!extra) { extra = {}; }\n            var id = testId++;\n            t.once('prerun', function () {\n                var row = {\n                    type: 'test',\n                    name: t.name,\n                    id: id,\n                    skip: t._skip,\n                    todo: t._todo\n                };\n                if (has(extra, 'parent')) {\n                    row.parent = extra.parent;\n                }\n                output.queue(row);\n            });\n            t.on('test', function (st) {\n                ontest(st, { parent: id });\n            });\n            t.on('result', function (res) {\n                if (res && typeof res === 'object') {\n                    res.test = id;\n                    res.type = 'assert';\n                }\n                output.queue(res);\n            });\n            t.on('end', function () {\n                output.queue({ type: 'end', test: id });\n            });\n        });\n        self.on('done', function () { output.queue(null); });\n    } else {\n        output = resumer();\n        output.queue('TAP version 13\\n');\n        self._stream.pipe(output);\n    }\n\n    if (!this._isRunning) {\n        this._isRunning = true;\n        nextTick(function next() {\n            var t;\n            while (t = getNextTest(self)) {\n                t.run();\n                if (!t.ended) {\n                    t.once('end', function () { nextTick(next); });\n                    return;\n                }\n            }\n            self.emit('done');\n        });\n    }\n\n    return output;\n};\n\nResults.prototype.push = function (t) {\n    var self = this;\n    $push(self.tests, t);\n    self._watch(t);\n    self.emit('_push', t);\n};\n\nResults.prototype.only = function (t) {\n    this._only = t;\n};\n\nResults.prototype._watch = function (t) {\n    var self = this;\n    var write = function (s) { self._stream.queue(s); };\n    t.once('prerun', function () {\n        var premsg = '';\n        if (t._skip) {\n            premsg = 'SKIP ';\n        } else if (t._todo) {\n            premsg = 'TODO ';\n        }\n        write('# ' + premsg + coalesceWhiteSpaces(t.name) + '\\n');\n    });\n\n    t.on('result', function (res) {\n        if (typeof res === 'string') {\n            write('# ' + res + '\\n');\n            return;\n        }\n        write(encodeResult(res, self.count + 1));\n        self.count++;\n\n        if (res.ok || res.todo) {\n            self.pass++;\n        } else {\n            self.fail++;\n            self.emit('fail');\n        }\n    });\n\n    t.on('test', function (st) { self._watch(st); });\n};\n\nResults.prototype.close = function () {\n    var self = this;\n    if (self.closed) { self._stream.emit('error', new Error('ALREADY CLOSED')); }\n    self.closed = true;\n    var write = function (s) { self._stream.queue(s); };\n\n    write('\\n1..' + self.count + '\\n');\n    write('# tests ' + self.count + '\\n');\n    write('# pass  ' + (self.pass + self.todo) + '\\n');\n    if (self.todo) { write('# todo  ' + self.todo + '\\n'); }\n    if (self.fail) {\n        write('# fail  ' + self.fail + '\\n');\n    } else {\n        write('\\n# ok\\n');\n    }\n\n    self._stream.queue(null);\n};\n\nfunction encodeResult(res, count) {\n    var output = '';\n    output += (res.ok ? 'ok ' : 'not ok ') + count;\n    output += res.name ? ' ' + coalesceWhiteSpaces(res.name) : '';\n\n    if (res.skip) {\n        output += ' # SKIP' + (typeof res.skip === 'string' ? ' ' + coalesceWhiteSpaces(res.skip) : '');\n    } else if (res.todo) {\n        output += ' # TODO' + (typeof res.todo === 'string' ? ' ' + coalesceWhiteSpaces(res.todo) : '');\n    }\n\n    output += '\\n';\n    if (res.ok) { return output; }\n\n    var outer = '  ';\n    var inner = outer + '  ';\n    output += outer + '---\\n';\n    output += inner + 'operator: ' + res.operator + '\\n';\n\n    if (has(res, 'expected') || has(res, 'actual')) {\n        var ex = inspect(res.expected, { depth: res.objectPrintDepth });\n        var ac = inspect(res.actual, { depth: res.objectPrintDepth });\n\n        if (Math.max(ex.length, ac.length) > 65 || invalidYaml(ex) || invalidYaml(ac)) {\n            output += inner + 'expected: |-\\n' + inner + '  ' + ex + '\\n';\n            output += inner + 'actual: |-\\n' + inner + '  ' + ac + '\\n';\n        } else {\n            output += inner + 'expected: ' + ex + '\\n';\n            output += inner + 'actual:   ' + ac + '\\n';\n        }\n    }\n    if (res.at) {\n        output += inner + 'at: ' + res.at + '\\n';\n    }\n\n    var actualStack = res.actual && (typeof res.actual === 'object' || typeof res.actual === 'function') ? res.actual.stack : undefined;\n    var errorStack = res.error && res.error.stack;\n    var stack = defined(actualStack, errorStack);\n    if (stack) {\n        var lines = $split(String(stack), '\\n');\n        output += inner + 'stack: |-\\n';\n        for (var i = 0; i < lines.length; i++) {\n            output += inner + '  ' + lines[i] + '\\n';\n        }\n    }\n\n    output += outer + '...\\n';\n    return output;\n}\n\nfunction getNextTest(results) {\n    if (!results._only) {\n        return $shift(results.tests);\n    }\n\n    do {\n        var t = $shift(results.tests);\n        if (t && results._only === t) {\n            return t;\n        }\n    } while (results.tests.length !== 0);\n\n    return void undefined;\n}\n\nfunction invalidYaml(str) {\n    return regexpTest(yamlIndicators, str);\n}\n","'use strict';\n\nvar deepEqual = require('deep-equal');\nvar defined = require('defined');\nvar path = require('path');\nvar inherits = require('inherits');\nvar EventEmitter = require('events').EventEmitter;\nvar has = require('has');\nvar isRegExp = require('is-regex');\nvar trim = require('string.prototype.trim');\nvar callBound = require('call-bind/callBound');\nvar forEach = require('for-each');\nvar inspect = require('object-inspect');\nvar is = require('object-is');\nvar objectKeys = require('object-keys');\nvar every = require('array.prototype.every');\n\nvar isEnumerable = callBound('Object.prototype.propertyIsEnumerable');\nvar toLowerCase = callBound('String.prototype.toLowerCase');\nvar isProto = callBound('Object.prototype.isPrototypeOf');\nvar $exec = callBound('RegExp.prototype.exec');\nvar objectToString = callBound('Object.prototype.toString');\nvar $split = callBound('String.prototype.split');\nvar $replace = callBound('String.prototype.replace');\nvar $strSlice = callBound('String.prototype.slice');\nvar $push = callBound('Array.prototype.push');\nvar $shift = callBound('Array.prototype.shift');\n\nmodule.exports = Test;\n\nvar nextTick = typeof setImmediate !== 'undefined'\n    ? setImmediate\n    : process.nextTick;\nvar safeSetTimeout = setTimeout;\nvar safeClearTimeout = clearTimeout;\n\ninherits(Test, EventEmitter);\n\n// eslint-disable-next-line no-unused-vars\nvar getTestArgs = function (name_, opts_, cb_) {\n    var name = '(anonymous)';\n    var opts = {};\n    var cb;\n\n    for (var i = 0; i < arguments.length; i++) {\n        var arg = arguments[i];\n        var t = typeof arg;\n        if (t === 'string') {\n            name = arg;\n        } else if (t === 'object') {\n            opts = arg || opts;\n        } else if (t === 'function') {\n            cb = arg;\n        }\n    }\n    return {\n        name: name,\n        opts: opts,\n        cb: cb\n    };\n};\n\nfunction Test(name_, opts_, cb_) {\n    if (!(this instanceof Test)) {\n        return new Test(name_, opts_, cb_);\n    }\n\n    var args = getTestArgs(name_, opts_, cb_);\n\n    this.readable = true;\n    this.name = args.name || '(anonymous)';\n    this.assertCount = 0;\n    this.pendingCount = 0;\n    this._skip = args.opts.skip || false;\n    this._todo = args.opts.todo || false;\n    this._timeout = args.opts.timeout;\n    this._plan = undefined;\n    this._cb = args.cb;\n    this._progeny = [];\n    this._teardown = [];\n    this._ok = true;\n    var depthEnvVar = process.env.NODE_TAPE_OBJECT_PRINT_DEPTH;\n    if (args.opts.objectPrintDepth) {\n        this._objectPrintDepth = args.opts.objectPrintDepth;\n    } else if (depthEnvVar) {\n        if (toLowerCase(depthEnvVar) === 'infinity') {\n            this._objectPrintDepth = Infinity;\n        } else {\n            this._objectPrintDepth = depthEnvVar;\n        }\n    } else {\n        this._objectPrintDepth = 5;\n    }\n\n    for (var prop in this) {\n        this[prop] = (function bind(self, val) {\n            if (typeof val === 'function') {\n                return function bound() {\n                    return val.apply(self, arguments);\n                };\n            }\n            return val;\n        }(this, this[prop]));\n    }\n}\n\nTest.prototype.run = function run() {\n    this.emit('prerun');\n    if (!this._cb || this._skip) {\n        this._end();\n        return;\n    }\n    if (this._timeout != null) {\n        this.timeoutAfter(this._timeout);\n    }\n\n    var callbackReturn = this._cb(this);\n\n    if (\n        typeof Promise === 'function'\n        && callbackReturn\n        && typeof callbackReturn.then === 'function'\n    ) {\n        var self = this;\n        Promise.resolve(callbackReturn).then(function onResolve() {\n            if (!self.calledEnd) {\n                self.end();\n            }\n        })['catch'](function onError(err) {\n            if (err instanceof Error || objectToString(err) === '[object Error]') {\n                self.ifError(err);\n            } else {\n                self.fail(err);\n            }\n            self.end();\n        });\n        return;\n    }\n\n    this.emit('run');\n};\n\nTest.prototype.test = function test(name, opts, cb) {\n    var self = this;\n    var t = new Test(name, opts, cb);\n    $push(this._progeny, t);\n    this.pendingCount++;\n    this.emit('test', t);\n    t.on('prerun', function () {\n        self.assertCount++;\n    });\n\n    if (!self._pendingAsserts()) {\n        nextTick(function () {\n            self._end();\n        });\n    }\n\n    nextTick(function () {\n        if (!self._plan && self.pendingCount == self._progeny.length) {\n            self._end();\n        }\n    });\n};\n\nTest.prototype.comment = function comment(msg) {\n    var that = this;\n    forEach($split(trim(msg), '\\n'), function (aMsg) {\n        that.emit('result', $replace(trim(aMsg), /^#\\s*/, ''));\n    });\n};\n\nTest.prototype.plan = function plan(n) {\n    this._plan = n;\n    this.emit('plan', n);\n};\n\nTest.prototype.timeoutAfter = function timeoutAfter(ms) {\n    if (!ms) { throw new Error('timeoutAfter requires a timespan'); }\n    var self = this;\n    var timeout = safeSetTimeout(function () {\n        self.fail(self.name + ' timed out after ' + ms + 'ms');\n        self.end();\n    }, ms);\n    this.once('end', function () {\n        safeClearTimeout(timeout);\n    });\n};\n\nTest.prototype.end = function end(err) {\n    if (arguments.length >= 1 && !!err) {\n        this.ifError(err);\n    }\n\n    if (this.calledEnd) {\n        this.fail('.end() already called');\n    }\n    this.calledEnd = true;\n    this._end();\n};\n\nTest.prototype.teardown = function teardown(fn) {\n    if (typeof fn !== 'function') {\n        this.fail('teardown: ' + inspect(fn) + ' is not a function');\n    } else {\n        this._teardown.push(fn);\n    }\n};\n\nTest.prototype._end = function _end(err) {\n    var self = this;\n\n    if (!this._cb && !this._todo && !this._skip) {\n        this.fail('# TODO ' + this.name);\n    }\n\n    if (this._progeny.length) {\n        var t = $shift(this._progeny);\n        t.on('end', function () { self._end(); });\n        t.run();\n        return;\n    }\n\n    function next() {\n        if (self._teardown.length === 0) {\n            completeEnd();\n            return;\n        }\n        var fn = self._teardown.shift();\n        var res;\n        try {\n            res = fn();\n        } catch (e) {\n            self.fail(e);\n        }\n        if (res && typeof res.then === 'function') {\n            res.then(next, function (_err) {\n                // TODO: wth?\n                err = err || _err;\n            });\n        } else {\n            next();\n        }\n    }\n\n    next();\n\n    function completeEnd() {\n        if (!self.ended) { self.emit('end'); }\n        var pendingAsserts = self._pendingAsserts();\n        if (!self._planError && self._plan !== undefined && pendingAsserts) {\n            self._planError = true;\n            self.fail('plan != count', {\n                expected: self._plan,\n                actual: self.assertCount\n            });\n        }\n        self.ended = true;\n    }\n};\n\nTest.prototype._exit = function _exit() {\n    if (this._plan !== undefined && !this._planError && this.assertCount !== this._plan) {\n        this._planError = true;\n        this.fail('plan != count', {\n            expected: this._plan,\n            actual: this.assertCount,\n            exiting: true\n        });\n    } else if (!this.ended) {\n        this.fail('test exited without ending: ' + this.name, {\n            exiting: true\n        });\n    }\n};\n\nTest.prototype._pendingAsserts = function _pendingAsserts() {\n    if (this._plan === undefined) {\n        return 1;\n    }\n    return this._plan - (this._progeny.length + this.assertCount);\n};\n\nTest.prototype._assert = function assert(ok, opts) {\n    var self = this;\n    var extra = opts.extra || {};\n\n    ok = !!ok || !!extra.skip;\n\n    var name = defined(extra.message, opts.message, '(unnamed assert)');\n    if (this.calledEnd && opts.operator !== 'fail') {\n        this.fail('.end() already called: ' + name);\n        return;\n    }\n\n    var res = {\n        id: self.assertCount++,\n        ok: ok,\n        skip: defined(extra.skip, opts.skip),\n        todo: defined(extra.todo, opts.todo, self._todo),\n        name: name,\n        operator: defined(extra.operator, opts.operator),\n        objectPrintDepth: self._objectPrintDepth\n    };\n    if (has(opts, 'actual') || has(extra, 'actual')) {\n        res.actual = defined(extra.actual, opts.actual);\n    }\n    if (has(opts, 'expected') || has(extra, 'expected')) {\n        res.expected = defined(extra.expected, opts.expected);\n    }\n    this._ok = !!(this._ok && ok);\n\n    if (!ok && !res.todo) {\n        res.error = defined(extra.error, opts.error, new Error(res.name));\n    }\n\n    if (!ok) {\n        var e = new Error('exception');\n        var err = $split(e.stack || '', '\\n');\n        var dir = __dirname + path.sep;\n\n        for (var i = 0; i < err.length; i++) {\n            /*\n                Stack trace lines may resemble one of the following. We need\n                to correctly extract a function name (if any) and path / line\n                number for each line.\n\n                    at myFunction (/path/to/file.js:123:45)\n                    at myFunction (/path/to/file.other-ext:123:45)\n                    at myFunction (/path to/file.js:123:45)\n                    at myFunction (C:\\path\\to\\file.js:123:45)\n                    at myFunction (/path/to/file.js:123)\n                    at Test.<anonymous> (/path/to/file.js:123:45)\n                    at Test.bound [as run] (/path/to/file.js:123:45)\n                    at /path/to/file.js:123:45\n\n                Regex has three parts. First is non-capturing group for 'at '\n                (plus anything preceding it).\n\n                    /^(?:[^\\s]*\\s*\\bat\\s+)/\n\n                Second captures function call description (optional). This is\n                not necessarily a valid JS function name, but just what the\n                stack trace is using to represent a function call. It may look\n                like `<anonymous>` or 'Test.bound [as run]'.\n\n                For our purposes, we assume that, if there is a function\n                name, it's everything leading up to the first open\n                parentheses (trimmed) before our pathname.\n\n                    /(?:(.*)\\s+\\()?/\n\n                Last part captures file path plus line no (and optional\n                column no).\n\n                    /((?:\\/|[a-zA-Z]:\\\\)[^:\\)]+:(\\d+)(?::(\\d+))?)\\)?/\n            */\n            var re = /^(?:[^\\s]*\\s*\\bat\\s+)(?:(.*)\\s+\\()?((?:\\/|[a-zA-Z]:\\\\)[^:)]+:(\\d+)(?::(\\d+))?)\\)?$/;\n            var lineWithTokens = $replace($replace(err[i], process.cwd(), '/$CWD'), __dirname, '/$TEST');\n            var m = re.exec(lineWithTokens);\n\n            if (!m) {\n                continue;\n            }\n\n            var callDescription = m[1] || '<anonymous>';\n            var filePath = $replace($replace(m[2], '/$CWD', process.cwd()), '/$TEST', __dirname);\n\n            if ($strSlice(filePath, 0, dir.length) === dir) {\n                continue;\n            }\n\n            // Function call description may not (just) be a function name.\n            // Try to extract function name by looking at first \"word\" only.\n            res.functionName = $split(callDescription, /\\s+/)[0];\n            res.file = filePath;\n            res.line = Number(m[3]);\n            if (m[4]) { res.column = Number(m[4]); }\n\n            res.at = callDescription + ' (' + filePath + ')';\n            break;\n        }\n    }\n\n    self.emit('result', res);\n\n    var pendingAsserts = self._pendingAsserts();\n    if (!pendingAsserts) {\n        if (extra.exiting) {\n            self._end();\n        } else {\n            nextTick(function () {\n                self._end();\n            });\n        }\n    }\n\n    if (!self._planError && pendingAsserts < 0) {\n        self._planError = true;\n        self.fail('plan != count', {\n            expected: self._plan,\n            actual: self._plan - pendingAsserts\n        });\n    }\n};\n\nTest.prototype.fail = function fail(msg, extra) {\n    this._assert(false, {\n        message: msg,\n        operator: 'fail',\n        extra: extra\n    });\n};\n\nTest.prototype.pass = function pass(msg, extra) {\n    this._assert(true, {\n        message: msg,\n        operator: 'pass',\n        extra: extra\n    });\n};\n\nTest.prototype.skip = function skip(msg, extra) {\n    this._assert(true, {\n        message: msg,\n        operator: 'skip',\n        skip: true,\n        extra: extra\n    });\n};\n\nvar testAssert = function assert(value, msg, extra) {\n    this._assert(value, {\n        message: defined(msg, 'should be truthy'),\n        operator: 'ok',\n        expected: true,\n        actual: value,\n        extra: extra\n    });\n};\nTest.prototype.ok\n= Test.prototype['true']\n= Test.prototype.assert\n= testAssert;\n\nfunction notOK(value, msg, extra) {\n    this._assert(!value, {\n        message: defined(msg, 'should be falsy'),\n        operator: 'notOk',\n        expected: false,\n        actual: value,\n        extra: extra\n    });\n}\nTest.prototype.notOk\n= Test.prototype['false']\n= Test.prototype.notok\n= notOK;\n\nfunction error(err, msg, extra) {\n    this._assert(!err, {\n        message: defined(msg, String(err)),\n        operator: 'error',\n        error: err,\n        extra: extra\n    });\n}\nTest.prototype.error\n= Test.prototype.ifError\n= Test.prototype.ifErr\n= Test.prototype.iferror\n= error;\n\nfunction strictEqual(a, b, msg, extra) {\n    if (arguments.length < 2) {\n        throw new TypeError('two arguments must be provided to compare');\n    }\n    this._assert(is(a, b), {\n        message: defined(msg, 'should be strictly equal'),\n        operator: 'equal',\n        actual: a,\n        expected: b,\n        extra: extra\n    });\n}\nTest.prototype.equal\n= Test.prototype.equals\n= Test.prototype.isEqual\n= Test.prototype.strictEqual\n= Test.prototype.strictEquals\n= Test.prototype.is\n= strictEqual;\n\nfunction notStrictEqual(a, b, msg, extra) {\n    if (arguments.length < 2) {\n        throw new TypeError('two arguments must be provided to compare');\n    }\n    this._assert(!is(a, b), {\n        message: defined(msg, 'should not be strictly equal'),\n        operator: 'notEqual',\n        actual: a,\n        expected: b,\n        extra: extra\n    });\n}\n\nTest.prototype.notEqual\n= Test.prototype.notEquals\n= Test.prototype.isNotEqual\n= Test.prototype.doesNotEqual\n= Test.prototype.isInequal\n= Test.prototype.notStrictEqual\n= Test.prototype.notStrictEquals\n= Test.prototype.isNot\n= Test.prototype.not\n= notStrictEqual;\n\nfunction looseEqual(a, b, msg, extra) {\n    if (arguments.length < 2) {\n        throw new TypeError('two arguments must be provided to compare');\n    }\n    this._assert(a == b, {\n        message: defined(msg, 'should be loosely equal'),\n        operator: 'looseEqual',\n        actual: a,\n        expected: b,\n        extra: extra\n    });\n}\n\nTest.prototype.looseEqual\n= Test.prototype.looseEquals\n= looseEqual;\n\nfunction notLooseEqual(a, b, msg, extra) {\n    if (arguments.length < 2) {\n        throw new TypeError('two arguments must be provided to compare');\n    }\n    this._assert(a != b, {\n        message: defined(msg, 'should not be loosely equal'),\n        operator: 'notLooseEqual',\n        actual: a,\n        expected: b,\n        extra: extra\n    });\n}\nTest.prototype.notLooseEqual\n= Test.prototype.notLooseEquals\n= notLooseEqual;\n\nfunction tapeDeepEqual(a, b, msg, extra) {\n    if (arguments.length < 2) {\n        throw new TypeError('two arguments must be provided to compare');\n    }\n    this._assert(deepEqual(a, b, { strict: true }), {\n        message: defined(msg, 'should be deeply equivalent'),\n        operator: 'deepEqual',\n        actual: a,\n        expected: b,\n        extra: extra\n    });\n}\nTest.prototype.deepEqual\n= Test.prototype.deepEquals\n= Test.prototype.isEquivalent\n= Test.prototype.same\n= tapeDeepEqual;\n\nfunction notDeepEqual(a, b, msg, extra) {\n    if (arguments.length < 2) {\n        throw new TypeError('two arguments must be provided to compare');\n    }\n    this._assert(!deepEqual(a, b, { strict: true }), {\n        message: defined(msg, 'should not be deeply equivalent'),\n        operator: 'notDeepEqual',\n        actual: a,\n        expected: b,\n        extra: extra\n    });\n}\nTest.prototype.notDeepEqual\n= Test.prototype.notDeepEquals\n= Test.prototype.notEquivalent\n= Test.prototype.notDeeply\n= Test.prototype.notSame\n= Test.prototype.isNotDeepEqual\n= Test.prototype.isNotDeeply\n= Test.prototype.isNotEquivalent\n= Test.prototype.isInequivalent\n= notDeepEqual;\n\nfunction deepLooseEqual(a, b, msg, extra) {\n    if (arguments.length < 2) {\n        throw new TypeError('two arguments must be provided to compare');\n    }\n    this._assert(deepEqual(a, b), {\n        message: defined(msg, 'should be loosely deeply equivalent'),\n        operator: 'deepLooseEqual',\n        actual: a,\n        expected: b,\n        extra: extra\n    });\n}\n\nTest.prototype.deepLooseEqual\n= deepLooseEqual;\n\nfunction notDeepLooseEqual(a, b, msg, extra) {\n    if (arguments.length < 2) {\n        throw new TypeError('two arguments must be provided to compare');\n    }\n    this._assert(!deepEqual(a, b), {\n        message: defined(msg, 'should not be loosely deeply equivalent'),\n        operator: 'notDeepLooseEqual',\n        actual: a,\n        expected: b,\n        extra: extra\n    });\n}\nTest.prototype.notDeepLooseEqual\n= notDeepLooseEqual;\n\nTest.prototype['throws'] = function (fn, expected, msg, extra) {\n    if (typeof expected === 'string') {\n        msg = expected;\n        expected = undefined;\n    }\n\n    var caught;\n\n    try {\n        fn();\n    } catch (err) {\n        caught = { error: err };\n        if (Object(err) === err && (!isEnumerable(err, 'message') || !has(err, 'message'))) {\n            var message = err.message;\n            delete err.message;\n            err.message = message;\n        }\n    }\n\n    var passed = caught;\n\n    if (caught) {\n        if (typeof expected === 'string' && caught.error && caught.error.message === expected) {\n            throw new TypeError('The \"error/message\" argument is ambiguous. The error message ' + inspect(expected) + ' is identical to the message.');\n        }\n        if (typeof expected === 'function') {\n            if (typeof expected.prototype !== 'undefined' && caught.error instanceof expected) {\n                passed = true;\n            } else if (isProto(Error, expected)) {\n                passed = false;\n            } else {\n                passed = expected.call({}, caught.error) === true;\n            }\n        } else if (isRegExp(expected)) {\n            passed = $exec(expected, caught.error) !== null;\n            expected = inspect(expected);\n        } else if (expected && typeof expected === 'object') { // Handle validation objects.\n            var keys = objectKeys(expected);\n            // Special handle errors to make sure the name and the message are compared as well.\n            if (expected instanceof Error) {\n                $push(keys, 'name', 'message');\n            } else if (keys.length === 0) {\n                throw new TypeError('`throws` validation object must not be empty');\n            }\n            passed = every(keys, function (key) {\n                if (typeof caught.error[key] === 'string' && isRegExp(expected[key]) && $exec(expected[key], caught.error[key]) !== null) {\n                    return true;\n                }\n                if (key in caught.error && deepEqual(caught.error[key], expected[key], { strict: true })) {\n                    return true;\n                }\n                return false;\n            });\n        }\n    }\n\n    this._assert(!!passed, {\n        message: defined(msg, 'should throw'),\n        operator: 'throws',\n        actual: caught && caught.error,\n        expected: expected,\n        error: !passed && caught && caught.error,\n        extra: extra\n    });\n};\n\nTest.prototype.doesNotThrow = function doesNotThrow(fn, expected, msg, extra) {\n    if (typeof expected === 'string') {\n        msg = expected;\n        expected = undefined;\n    }\n    var caught;\n    try {\n        fn();\n    } catch (err) {\n        caught = { error: err };\n    }\n    this._assert(!caught, {\n        message: defined(msg, 'should not throw'),\n        operator: 'throws',\n        actual: caught && caught.error,\n        expected: expected,\n        error: caught && caught.error,\n        extra: extra\n    });\n};\n\nTest.prototype.match = function match(string, regexp, msg, extra) {\n    if (!isRegExp(regexp)) {\n        this._assert(false, {\n            message: defined(msg, 'The \"regexp\" argument must be an instance of RegExp. Received type ' + typeof regexp + ' (' + inspect(regexp) + ')'),\n            operator: 'match',\n            actual: objectToString(regexp),\n            expected: '[object RegExp]',\n            extra: extra\n        });\n    } else if (typeof string !== 'string') {\n        this._assert(false, {\n            message: defined(msg, 'The \"string\" argument must be of type string. Received type ' + typeof string + ' (' + inspect(string) + ')'),\n            operator: 'match',\n            actual: string === null ? null : typeof string,\n            expected: 'string',\n            extra: extra\n        });\n    } else {\n        var matches = $exec(regexp, string) !== null;\n        var message = defined(\n            msg,\n            'The input ' + (matches ? 'matched' : 'did not match') + ' the regular expression ' + inspect(regexp) + '. Input: ' + inspect(string)\n        );\n        this._assert(matches, {\n            message: message,\n            operator: 'match',\n            actual: string,\n            expected: regexp,\n            extra: extra\n        });\n    }\n};\n\nTest.prototype.doesNotMatch = function doesNotMatch(string, regexp, msg, extra) {\n    if (!isRegExp(regexp)) {\n        this._assert(false, {\n            message: defined(msg, 'The \"regexp\" argument must be an instance of RegExp. Received type ' + typeof regexp + ' (' + inspect(regexp) + ')'),\n            operator: 'doesNotMatch',\n            actual: objectToString(regexp),\n            expected: '[object RegExp]',\n            extra: extra\n        });\n    } else if (typeof string !== 'string') {\n        this._assert(false, {\n            message: defined(msg, 'The \"string\" argument must be of type string. Received type ' + typeof string + ' (' + inspect(string) + ')'),\n            operator: 'doesNotMatch',\n            actual: string === null ? null : typeof string,\n            expected: 'string',\n            extra: extra\n        });\n    } else {\n        var matches = $exec(regexp, string) !== null;\n        var message = defined(\n            msg,\n            'The input ' + (matches ? 'was expected to not match' : 'did not match') + ' the regular expression ' + inspect(regexp) + '. Input: ' + inspect(string)\n        );\n        this._assert(!matches, {\n            message: message,\n            operator: 'doesNotMatch',\n            actual: string,\n            expected: regexp,\n            extra: extra\n        });\n    }\n};\n\n// eslint-disable-next-line no-unused-vars\nTest.skip = function skip(name_, _opts, _cb) {\n    var args = getTestArgs.apply(null, arguments);\n    args.opts.skip = true;\n    return new Test(args.name, args.opts, args.cb);\n};\n\n// vim: set softtabstop=4 shiftwidth=4:\n","var Stream = require('stream')\n\n// through\n//\n// a stream that does nothing but re-emit the input.\n// useful for aggregating a series of changing but not ending streams into one stream)\n\nexports = module.exports = through\nthrough.through = through\n\n//create a readable writable stream.\n\nfunction through (write, end, opts) {\n  write = write || function (data) { this.queue(data) }\n  end = end || function () { this.queue(null) }\n\n  var ended = false, destroyed = false, buffer = [], _ended = false\n  var stream = new Stream()\n  stream.readable = stream.writable = true\n  stream.paused = false\n\n//  stream.autoPause   = !(opts && opts.autoPause   === false)\n  stream.autoDestroy = !(opts && opts.autoDestroy === false)\n\n  stream.write = function (data) {\n    write.call(this, data)\n    return !stream.paused\n  }\n\n  function drain() {\n    while(buffer.length && !stream.paused) {\n      var data = buffer.shift()\n      if(null === data)\n        return stream.emit('end')\n      else\n        stream.emit('data', data)\n    }\n  }\n\n  stream.queue = stream.push = function (data) {\n//    console.error(ended)\n    if(_ended) return stream\n    if(data === null) _ended = true\n    buffer.push(data)\n    drain()\n    return stream\n  }\n\n  //this will be registered as the first 'end' listener\n  //must call destroy next tick, to make sure we're after any\n  //stream piped from here.\n  //this is only a problem if end is not emitted synchronously.\n  //a nicer way to do this is to make sure this is the last listener for 'end'\n\n  stream.on('end', function () {\n    stream.readable = false\n    if(!stream.writable && stream.autoDestroy)\n      process.nextTick(function () {\n        stream.destroy()\n      })\n  })\n\n  function _end () {\n    stream.writable = false\n    end.call(stream)\n    if(!stream.readable && stream.autoDestroy)\n      stream.destroy()\n  }\n\n  stream.end = function (data) {\n    if(ended) return\n    ended = true\n    if(arguments.length) stream.write(data)\n    _end() // will emit or queue\n    return stream\n  }\n\n  stream.destroy = function () {\n    if(destroyed) return\n    destroyed = true\n    ended = true\n    buffer.length = 0\n    stream.writable = stream.readable = false\n    stream.emit('close')\n    return stream\n  }\n\n  stream.pause = function () {\n    if(stream.paused) return\n    stream.paused = true\n    return stream\n  }\n\n  stream.resume = function () {\n    if(stream.paused) {\n      stream.paused = false\n      stream.emit('resume')\n    }\n    drain()\n    //may have become paused again,\n    //as drain emits 'data'.\n    if(!stream.paused)\n      stream.emit('drain')\n    return stream\n  }\n  return stream\n}\n\n","var nextTick = require('process/browser.js').nextTick;\nvar apply = Function.prototype.apply;\nvar slice = Array.prototype.slice;\nvar immediateIds = {};\nvar nextImmediateId = 0;\n\n// DOM APIs, for completeness\n\nexports.setTimeout = function() {\n  return new Timeout(apply.call(setTimeout, window, arguments), clearTimeout);\n};\nexports.setInterval = function() {\n  return new Timeout(apply.call(setInterval, window, arguments), clearInterval);\n};\nexports.clearTimeout =\nexports.clearInterval = function(timeout) { timeout.close(); };\n\nfunction Timeout(id, clearFn) {\n  this._id = id;\n  this._clearFn = clearFn;\n}\nTimeout.prototype.unref = Timeout.prototype.ref = function() {};\nTimeout.prototype.close = function() {\n  this._clearFn.call(window, this._id);\n};\n\n// Does not start the time, just sets up the members needed.\nexports.enroll = function(item, msecs) {\n  clearTimeout(item._idleTimeoutId);\n  item._idleTimeout = msecs;\n};\n\nexports.unenroll = function(item) {\n  clearTimeout(item._idleTimeoutId);\n  item._idleTimeout = -1;\n};\n\nexports._unrefActive = exports.active = function(item) {\n  clearTimeout(item._idleTimeoutId);\n\n  var msecs = item._idleTimeout;\n  if (msecs >= 0) {\n    item._idleTimeoutId = setTimeout(function onTimeout() {\n      if (item._onTimeout)\n        item._onTimeout();\n    }, msecs);\n  }\n};\n\n// That's not how node.js implements it but the exposed api is the same.\nexports.setImmediate = typeof setImmediate === \"function\" ? setImmediate : function(fn) {\n  var id = nextImmediateId++;\n  var args = arguments.length < 2 ? false : slice.call(arguments, 1);\n\n  immediateIds[id] = true;\n\n  nextTick(function onNextTick() {\n    if (immediateIds[id]) {\n      // fn.call() is faster so we optimize for the common use-case\n      // @see http://jsperf.com/call-apply-segu\n      if (args) {\n        fn.apply(null, args);\n      } else {\n        fn.call(null);\n      }\n      // Prevent ids from leaking\n      exports.clearImmediate(id);\n    }\n  });\n\n  return id;\n};\n\nexports.clearImmediate = typeof clearImmediate === \"function\" ? clearImmediate : function(id) {\n  delete immediateIds[id];\n};","\n/**\n * Module exports.\n */\n\nmodule.exports = deprecate;\n\n/**\n * Mark that a method should not be used.\n * Returns a modified function which warns once by default.\n *\n * If `localStorage.noDeprecation = true` is set, then it is a no-op.\n *\n * If `localStorage.throwDeprecation = true` is set, then deprecated functions\n * will throw an Error when invoked.\n *\n * If `localStorage.traceDeprecation = true` is set, then deprecated functions\n * will invoke `console.trace()` instead of `console.error()`.\n *\n * @param {Function} fn - the function to deprecate\n * @param {String} msg - the string to print to the console when `fn` is invoked\n * @returns {Function} a new \"deprecated\" version of `fn`\n * @api public\n */\n\nfunction deprecate (fn, msg) {\n  if (config('noDeprecation')) {\n    return fn;\n  }\n\n  var warned = false;\n  function deprecated() {\n    if (!warned) {\n      if (config('throwDeprecation')) {\n        throw new Error(msg);\n      } else if (config('traceDeprecation')) {\n        console.trace(msg);\n      } else {\n        console.warn(msg);\n      }\n      warned = true;\n    }\n    return fn.apply(this, arguments);\n  }\n\n  return deprecated;\n}\n\n/**\n * Checks `localStorage` for boolean values for the given `name`.\n *\n * @param {String} name\n * @returns {Boolean}\n * @api private\n */\n\nfunction config (name) {\n  // accessing global.localStorage can trigger a DOMException in sandboxed iframes\n  try {\n    if (!global.localStorage) return false;\n  } catch (_) {\n    return false;\n  }\n  var val = global.localStorage[name];\n  if (null == val) return false;\n  return String(val).toLowerCase() === 'true';\n}\n","'use strict';\n\nvar isString = require('is-string');\nvar isNumber = require('is-number-object');\nvar isBoolean = require('is-boolean-object');\nvar isSymbol = require('is-symbol');\nvar isBigInt = require('is-bigint');\n\n// eslint-disable-next-line consistent-return\nmodule.exports = function whichBoxedPrimitive(value) {\n\t// eslint-disable-next-line eqeqeq\n\tif (value == null || (typeof value !== 'object' && typeof value !== 'function')) {\n\t\treturn null;\n\t}\n\tif (isString(value)) {\n\t\treturn 'String';\n\t}\n\tif (isNumber(value)) {\n\t\treturn 'Number';\n\t}\n\tif (isBoolean(value)) {\n\t\treturn 'Boolean';\n\t}\n\tif (isSymbol(value)) {\n\t\treturn 'Symbol';\n\t}\n\tif (isBigInt(value)) {\n\t\treturn 'BigInt';\n\t}\n};\n","'use strict';\n\nvar isMap = require('is-map');\nvar isSet = require('is-set');\nvar isWeakMap = require('is-weakmap');\nvar isWeakSet = require('is-weakset');\n\nmodule.exports = function whichCollection(value) {\n\tif (value && typeof value === 'object') {\n\t\tif (isMap(value)) {\n\t\t\treturn 'Map';\n\t\t}\n\t\tif (isSet(value)) {\n\t\t\treturn 'Set';\n\t\t}\n\t\tif (isWeakMap(value)) {\n\t\t\treturn 'WeakMap';\n\t\t}\n\t\tif (isWeakSet(value)) {\n\t\t\treturn 'WeakSet';\n\t\t}\n\t}\n\treturn false;\n};\n","'use strict';\n\nvar forEach = require('foreach');\nvar availableTypedArrays = require('available-typed-arrays');\nvar callBound = require('call-bind/callBound');\n\nvar $toString = callBound('Object.prototype.toString');\nvar hasToStringTag = require('has-tostringtag/shams')();\n\nvar g = typeof globalThis === 'undefined' ? global : globalThis;\nvar typedArrays = availableTypedArrays();\n\nvar $slice = callBound('String.prototype.slice');\nvar toStrTags = {};\nvar gOPD = require('es-abstract/helpers/getOwnPropertyDescriptor');\nvar getPrototypeOf = Object.getPrototypeOf; // require('getprototypeof');\nif (hasToStringTag && gOPD && getPrototypeOf) {\n\tforEach(typedArrays, function (typedArray) {\n\t\tif (typeof g[typedArray] === 'function') {\n\t\t\tvar arr = new g[typedArray]();\n\t\t\tif (Symbol.toStringTag in arr) {\n\t\t\t\tvar proto = getPrototypeOf(arr);\n\t\t\t\tvar descriptor = gOPD(proto, Symbol.toStringTag);\n\t\t\t\tif (!descriptor) {\n\t\t\t\t\tvar superProto = getPrototypeOf(proto);\n\t\t\t\t\tdescriptor = gOPD(superProto, Symbol.toStringTag);\n\t\t\t\t}\n\t\t\t\ttoStrTags[typedArray] = descriptor.get;\n\t\t\t}\n\t\t}\n\t});\n}\n\nvar tryTypedArrays = function tryAllTypedArrays(value) {\n\tvar foundName = false;\n\tforEach(toStrTags, function (getter, typedArray) {\n\t\tif (!foundName) {\n\t\t\ttry {\n\t\t\t\tvar name = getter.call(value);\n\t\t\t\tif (name === typedArray) {\n\t\t\t\t\tfoundName = name;\n\t\t\t\t}\n\t\t\t} catch (e) {}\n\t\t}\n\t});\n\treturn foundName;\n};\n\nvar isTypedArray = require('is-typed-array');\n\nmodule.exports = function whichTypedArray(value) {\n\tif (!isTypedArray(value)) { return false; }\n\tif (!hasToStringTag || !(Symbol.toStringTag in value)) { return $slice($toString(value), 8, -1); }\n\treturn tryTypedArrays(value);\n};\n","'use strict';\n\nvar assign = require('../');\nvar test = require('tape');\nvar runTests = require('./tests');\n\ntest('as a function', function (t) {\n\tt.test('bad array/this value', function (st) {\n\t\tst['throws'](function () { assign(undefined); }, TypeError, 'undefined is not an object');\n\t\tst['throws'](function () { assign(null); }, TypeError, 'null is not an object');\n\t\tst.end();\n\t});\n\n\trunTests(assign, t);\n\n\tt.end();\n});\n","'use strict';\n\nvar hasSymbols = require('has-symbols/shams')();\nvar forEach = require('for-each');\nvar has = require('has');\nvar mockProperty = require('mock-property');\n\nmodule.exports = function (assign, t) {\n\tt.test('error cases', function (st) {\n\t\tst['throws'](function () { assign(null); }, TypeError, 'target must be an object');\n\t\tst['throws'](function () { assign(undefined); }, TypeError, 'target must be an object');\n\t\tst['throws'](function () { assign(null, {}); }, TypeError, 'target must be an object');\n\t\tst['throws'](function () { assign(undefined, {}); }, TypeError, 'target must be an object');\n\t\tst.end();\n\t});\n\n\tt.test('non-object target, no sources', function (st) {\n\t\tvar bool = assign(true);\n\t\tst.equal(typeof bool, 'object', 'bool is object');\n\t\tst.equal(Boolean.prototype.valueOf.call(bool), true, 'bool coerces to `true`');\n\n\t\tvar number = assign(1);\n\t\tst.equal(typeof number, 'object', 'number is object');\n\t\tst.equal(Number.prototype.valueOf.call(number), 1, 'number coerces to `1`');\n\n\t\tvar string = assign('1');\n\t\tst.equal(typeof string, 'object', 'number is object');\n\t\tst.equal(String.prototype.valueOf.call(string), '1', 'number coerces to `\"1\"`');\n\n\t\tst.end();\n\t});\n\n\tt.test('non-object target, with sources', function (st) {\n\t\tvar signal = {};\n\n\t\tst.test('boolean', function (st2) {\n\t\t\tvar bool = assign(true, { a: signal });\n\t\t\tst2.equal(typeof bool, 'object', 'bool is object');\n\t\t\tst2.equal(Boolean.prototype.valueOf.call(bool), true, 'bool coerces to `true`');\n\t\t\tst2.equal(bool.a, signal, 'source properties copied');\n\t\t\tst2.end();\n\t\t});\n\n\t\tst.test('number', function (st2) {\n\t\t\tvar number = assign(1, { a: signal });\n\t\t\tst2.equal(typeof number, 'object', 'number is object');\n\t\t\tst2.equal(Number.prototype.valueOf.call(number), 1, 'number coerces to `1`');\n\t\t\tst2.equal(number.a, signal, 'source properties copied');\n\t\t\tst2.end();\n\t\t});\n\n\t\tst.test('string', function (st2) {\n\t\t\tvar string = assign('1', { a: signal });\n\t\t\tst2.equal(typeof string, 'object', 'number is object');\n\t\t\tst2.equal(String.prototype.valueOf.call(string), '1', 'number coerces to `\"1\"`');\n\t\t\tst2.equal(string.a, signal, 'source properties copied');\n\t\t\tst2.end();\n\t\t});\n\n\t\tst.end();\n\t});\n\n\tt.test('non-object sources', function (st) {\n\t\tst.deepEqual(assign({ a: 1 }, null, { b: 2 }), { a: 1, b: 2 }, 'ignores null source');\n\t\tst.deepEqual(assign({ a: 1 }, { b: 2 }, undefined), { a: 1, b: 2 }, 'ignores undefined source');\n\t\tst.end();\n\t});\n\n\tt.test('returns the modified target object', function (st) {\n\t\tvar target = {};\n\t\tvar returned = assign(target, { a: 1 });\n\t\tst.equal(returned, target, 'returned object is the same reference as the target object');\n\t\tst.end();\n\t});\n\n\tt.test('has the right length', function (st) {\n\t\tst.equal(assign.length, 2, 'length is 2 => 2 required arguments');\n\t\tst.end();\n\t});\n\n\tt.test('merge two objects', function (st) {\n\t\tvar target = { a: 1 };\n\t\tvar returned = assign(target, { b: 2 });\n\t\tst.deepEqual(returned, { a: 1, b: 2 }, 'returned object has properties from both');\n\t\tst.end();\n\t});\n\n\tt.test('works with functions', function (st) {\n\t\tvar target = function () {};\n\t\ttarget.a = 1;\n\t\tvar returned = assign(target, { b: 2 });\n\t\tst.equal(target, returned, 'returned object is target');\n\t\tst.equal(returned.a, 1);\n\t\tst.equal(returned.b, 2);\n\t\tst.end();\n\t});\n\n\tt.test('works with primitives', function (st) {\n\t\tvar target = 2;\n\t\tvar source = { b: 42 };\n\t\tvar returned = assign(target, source);\n\t\tst.equal(Object.prototype.toString.call(returned), '[object Number]', 'returned is object form of number primitive');\n\t\tst.equal(Number(returned), target, 'returned and target have same valueOf');\n\t\tst.equal(returned.b, source.b);\n\t\tst.end();\n\t});\n\n\t/* globals window */\n\tt.test('works with window.location', { skip: typeof window === 'undefined' }, function (st) {\n\t\tvar target = {};\n\t\tassign(target, window.location);\n\t\tfor (var prop in window.location) {\n\t\t\tif (has(window.location, prop)) {\n\t\t\t\tst.deepEqual(target[prop], window.location[prop], prop + ' is copied');\n\t\t\t}\n\t\t}\n\t\tst.end();\n\t});\n\n\tt.test('merge N objects', function (st) {\n\t\tvar target = { a: 1 };\n\t\tvar source1 = { b: 2 };\n\t\tvar source2 = { c: 3 };\n\t\tvar returned = assign(target, source1, source2);\n\t\tst.deepEqual(returned, { a: 1, b: 2, c: 3 }, 'returned object has properties from all sources');\n\t\tst.end();\n\t});\n\n\tt.test('only iterates over own keys', function (st) {\n\t\tvar Foo = function () {};\n\t\tFoo.prototype.bar = true;\n\t\tvar foo = new Foo();\n\t\tfoo.baz = true;\n\t\tvar target = { a: 1 };\n\t\tvar returned = assign(target, foo);\n\t\tst.equal(returned, target, 'returned object is the same reference as the target object');\n\t\tst.deepEqual(target, { a: 1, baz: true }, 'returned object has only own properties from both');\n\t\tst.end();\n\t});\n\n\tt.test('includes enumerable symbols, after keys', { skip: !hasSymbols }, function (st) {\n\t\tvar visited = [];\n\t\tvar obj = {};\n\t\tObject.defineProperty(obj, 'a', { enumerable: true, get: function () { visited.push('a'); return 42; } });\n\t\tvar symbol = Symbol('enumerable');\n\t\tObject.defineProperty(obj, symbol, {\n\t\t\tenumerable: true,\n\t\t\tget: function () { visited.push(symbol); return Infinity; }\n\t\t});\n\t\tvar nonEnumSymbol = Symbol('non-enumerable');\n\t\tObject.defineProperty(obj, nonEnumSymbol, {\n\t\t\tenumerable: false,\n\t\t\tget: function () { visited.push(nonEnumSymbol); return -Infinity; }\n\t\t});\n\t\tvar target = assign({}, obj);\n\t\tst.deepEqual(visited, ['a', symbol], 'key is visited first, then symbol');\n\t\tst.equal(target.a, 42, 'target.a is 42');\n\t\tst.equal(target[symbol], Infinity, 'target[symbol] is Infinity');\n\t\tst.notEqual(target[nonEnumSymbol], -Infinity, 'target[nonEnumSymbol] is not -Infinity');\n\t\tst.end();\n\t});\n\n\tt.test('does not fail when symbols are not present', { skip: !Object.isFrozen || Object.isFrozen(Object) }, function (st) {\n\t\tst.teardown(mockProperty(Object, 'getOwnPropertySymbols', { 'delete': true }));\n\n\t\tvar visited = [];\n\t\tvar obj = {};\n\t\tObject.defineProperty(obj, 'a', { enumerable: true, get: function () { visited.push('a'); return 42; } });\n\t\tvar keys = ['a'];\n\t\tif (hasSymbols) {\n\t\t\tvar symbol = Symbol('sym');\n\t\t\tObject.defineProperty(obj, symbol, {\n\t\t\t\tenumerable: true,\n\t\t\t\tget: function () { visited.push(symbol); return Infinity; }\n\t\t\t});\n\t\t\tkeys.push(symbol);\n\t\t}\n\t\tvar target = assign({}, obj);\n\t\tst.deepEqual(visited, keys, 'assign visits expected keys');\n\t\tst.equal(target.a, 42, 'target.a is 42');\n\n\t\tif (hasSymbols) {\n\t\t\tst.equal(target[symbol], Infinity);\n\t\t}\n\t\tst.end();\n\t});\n\n\tt.test('preserves correct property enumeration order', function (st) {\n\t\tvar str = 'abcdefghijklmnopqrst';\n\t\tvar letters = {};\n\t\tforEach(str.split(''), function (letter) {\n\t\t\tletters[letter] = letter;\n\t\t});\n\n\t\tvar n = 5;\n\t\tst.comment('run the next test ' + n + ' times');\n\t\tvar object = assign({}, letters);\n\t\tvar actual = '';\n\t\tfor (var k in object) {\n\t\t\tactual += k;\n\t\t}\n\t\tfor (var i = 0; i < n; ++i) {\n\t\t\tst.equal(actual, str, 'property enumeration order should be followed');\n\t\t}\n\t\tst.end();\n\t});\n\n\tt.test('checks enumerability and existence, in case of modification during [[Get]]', { skip: !Object.defineProperty }, function (st) {\n\t\tvar targetBvalue = {};\n\t\tvar targetCvalue = {};\n\t\tvar target = { b: targetBvalue, c: targetCvalue };\n\t\tvar source = {};\n\t\tObject.defineProperty(source, 'a', {\n\t\t\tenumerable: true,\n\t\t\tget: function () {\n\t\t\t\tdelete this.b;\n\t\t\t\tObject.defineProperty(this, 'c', { enumerable: false });\n\t\t\t\treturn 'a';\n\t\t\t}\n\t\t});\n\t\tvar sourceBvalue = {};\n\t\tvar sourceCvalue = {};\n\t\tsource.b = sourceBvalue;\n\t\tsource.c = sourceCvalue;\n\t\tvar result = assign(target, source);\n\t\tst.equal(result, target, 'sanity check: result is === target');\n\t\tst.equal(result.b, targetBvalue, 'target key not overwritten by deleted source key');\n\t\tst.equal(result.c, targetCvalue, 'target key not overwritten by non-enumerable source key');\n\n\t\tst.end();\n\t});\n};\n"]}
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