'use strict'; // 19.1.3.6 Object.prototype.toString() var classof = require('./$.classof') , test = {}; test[require('./$.wks')('toStringTag')] = 'z'; if(test + '' != '[object z]'){ require('./$.redefine')(Object.prototype, 'toString', function toString(){ return '[object ' + classof(this) + ']'; }, true); }