es6.regexp.replace.js 480 Bytes
// @@replace logic
require('./$.fix-re-wks')('replace', 2, function(defined, REPLACE, $replace){
  // 21.1.3.14 String.prototype.replace(searchValue, replaceValue)
  return function replace(searchValue, replaceValue){
    'use strict';
    var O  = defined(this)
      , fn = searchValue == undefined ? undefined : searchValue[REPLACE];
    return fn !== undefined
      ? fn.call(searchValue, O, replaceValue)
      : $replace.call(String(O), searchValue, replaceValue);
  };
});