mirror of https://github.com/jkjoy/sunpeiwen.git
26 lines
826 B
JavaScript
26 lines
826 B
JavaScript
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'use strict';
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require('./es6.regexp.flags');
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var anObject = require('./_an-object');
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var $flags = require('./_flags');
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var DESCRIPTORS = require('./_descriptors');
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var TO_STRING = 'toString';
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var $toString = /./[TO_STRING];
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var define = function (fn) {
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require('./_redefine')(RegExp.prototype, TO_STRING, fn, true);
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};
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// 21.2.5.14 RegExp.prototype.toString()
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if (require('./_fails')(function () { return $toString.call({ source: 'a', flags: 'b' }) != '/a/b'; })) {
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define(function toString() {
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var R = anObject(this);
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return '/'.concat(R.source, '/',
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'flags' in R ? R.flags : !DESCRIPTORS && R instanceof RegExp ? $flags.call(R) : undefined);
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});
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// FF44- RegExp#toString has a wrong name
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} else if ($toString.name != TO_STRING) {
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define(function toString() {
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return $toString.call(this);
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});
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}
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