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- 'use strict';
- var uncurryThis = require('../internals/function-uncurry-this');
- var PROPER_FUNCTION_NAME = require('../internals/function-name').PROPER;
- var redefine = require('../internals/redefine');
- var anObject = require('../internals/an-object');
- var isPrototypeOf = require('../internals/object-is-prototype-of');
- var $toString = require('../internals/to-string');
- var fails = require('../internals/fails');
- var regExpFlags = require('../internals/regexp-flags');
- var TO_STRING = 'toString';
- var RegExpPrototype = RegExp.prototype;
- var n$ToString = RegExpPrototype[TO_STRING];
- var getFlags = uncurryThis(regExpFlags);
- var NOT_GENERIC = fails(function () { return n$ToString.call({ source: 'a', flags: 'b' }) != '/a/b'; });
- // FF44- RegExp#toString has a wrong name
- var INCORRECT_NAME = PROPER_FUNCTION_NAME && n$ToString.name != TO_STRING;
- // `RegExp.prototype.toString` method
- // https://tc39.es/ecma262/#sec-regexp.prototype.tostring
- if (NOT_GENERIC || INCORRECT_NAME) {
- redefine(RegExp.prototype, TO_STRING, function toString() {
- var R = anObject(this);
- var p = $toString(R.source);
- var rf = R.flags;
- var f = $toString(rf === undefined && isPrototypeOf(RegExpPrototype, R) && !('flags' in RegExpPrototype) ? getFlags(R) : rf);
- return '/' + p + '/' + f;
- }, { unsafe: true });
- }
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