18 lines
681 B
JavaScript
18 lines
681 B
JavaScript
'use strict';
|
|
var toIntegerOrInfinity = require('../internals/to-integer-or-infinity');
|
|
var toString = require('../internals/to-string');
|
|
var requireObjectCoercible = require('../internals/require-object-coercible');
|
|
|
|
var $RangeError = RangeError;
|
|
|
|
// `String.prototype.repeat` method implementation
|
|
// https://tc39.es/ecma262/#sec-string.prototype.repeat
|
|
module.exports = function repeat(count) {
|
|
var str = toString(requireObjectCoercible(this));
|
|
var result = '';
|
|
var n = toIntegerOrInfinity(count);
|
|
if (n < 0 || n === Infinity) throw new $RangeError('Wrong number of repetitions');
|
|
for (;n > 0; (n >>>= 1) && (str += str)) if (n & 1) result += str;
|
|
return result;
|
|
};
|