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