26 lines
912 B
JavaScript
26 lines
912 B
JavaScript
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'use strict';
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var hide = require('./$.hide')
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, redefine = require('./$.redefine')
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, fails = require('./$.fails')
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, defined = require('./$.defined')
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, wks = require('./$.wks');
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module.exports = function(KEY, length, exec){
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var SYMBOL = wks(KEY)
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, original = ''[KEY];
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if(fails(function(){
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var O = {};
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O[SYMBOL] = function(){ return 7; };
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return ''[KEY](O) != 7;
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})){
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redefine(String.prototype, KEY, exec(defined, SYMBOL, original));
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hide(RegExp.prototype, SYMBOL, length == 2
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// 21.2.5.8 RegExp.prototype[@@replace](string, replaceValue)
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// 21.2.5.11 RegExp.prototype[@@split](string, limit)
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? function(string, arg){ return original.call(string, this, arg); }
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// 21.2.5.6 RegExp.prototype[@@match](string)
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// 21.2.5.9 RegExp.prototype[@@search](string)
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: function(string){ return original.call(string, this); }
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);
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}
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};
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