| 'use strict'; |
| var redefine = require('../internals/redefine'); |
| var anObject = require('../internals/an-object'); |
| var fails = require('../internals/fails'); |
| var flags = require('../internals/regexp-flags'); |
| |
| var TO_STRING = 'toString'; |
| var RegExpPrototype = RegExp.prototype; |
| var nativeToString = RegExpPrototype[TO_STRING]; |
| |
| var NOT_GENERIC = fails(function () { return nativeToString.call({ source: 'a', flags: 'b' }) != '/a/b'; }); |
| // FF44- RegExp#toString has a wrong name |
| var INCORRECT_NAME = nativeToString.name != TO_STRING; |
| |
| // `RegExp.prototype.toString` method |
| // https://tc39.github.io/ecma262/#sec-regexp.prototype.tostring |
| if (NOT_GENERIC || INCORRECT_NAME) { |
| redefine(RegExp.prototype, TO_STRING, function toString() { |
| var R = anObject(this); |
| var p = String(R.source); |
| var rf = R.flags; |
| var f = String(rf === undefined && R instanceof RegExp && !('flags' in RegExpPrototype) ? flags.call(R) : rf); |
| return '/' + p + '/' + f; |
| }, { unsafe: true }); |
| } |