85 lines
1.8 KiB
JavaScript
85 lines
1.8 KiB
JavaScript
'use strict';
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const processFn = (fn, opts) => function () {
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const P = opts.promiseModule;
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const args = new Array(arguments.length);
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for (let i = 0; i < arguments.length; i++) {
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args[i] = arguments[i];
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}
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return new P((resolve, reject) => {
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if (opts.errorFirst) {
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args.push(function (err, result) {
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if (opts.multiArgs) {
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const results = new Array(arguments.length - 1);
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for (let i = 1; i < arguments.length; i++) {
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results[i - 1] = arguments[i];
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}
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if (err) {
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results.unshift(err);
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reject(results);
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} else {
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resolve(results);
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}
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} else if (err) {
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reject(err);
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} else {
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resolve(result);
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}
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});
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} else {
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args.push(function (result) {
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if (opts.multiArgs) {
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const results = new Array(arguments.length - 1);
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for (let i = 0; i < arguments.length; i++) {
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results[i] = arguments[i];
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}
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resolve(results);
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} else {
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resolve(result);
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}
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});
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}
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fn.apply(this, args);
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});
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};
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module.exports = (obj, opts) => {
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opts = Object.assign({
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exclude: [/.+(Sync|Stream)$/],
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errorFirst: true,
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promiseModule: Promise
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}, opts);
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const filter = key => {
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const match = pattern => typeof pattern === 'string' ? key === pattern : pattern.test(key);
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return opts.include ? opts.include.some(match) : !opts.exclude.some(match);
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};
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let ret;
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if (typeof obj === 'function') {
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ret = function () {
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if (opts.excludeMain) {
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return obj.apply(this, arguments);
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}
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return processFn(obj, opts).apply(this, arguments);
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};
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} else {
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ret = Object.create(Object.getPrototypeOf(obj));
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}
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for (const key in obj) { // eslint-disable-line guard-for-in
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const x = obj[key];
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ret[key] = typeof x === 'function' && filter(key) ? processFn(x, opts) : x;
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}
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return ret;
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};
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