- 'use strict';
 
- var toString = Object.prototype.toString;
 
- module.exports = function (x) {
 
- 	var prototype;
 
- 	return toString.call(x) === '[object Object]' && (prototype = Object.getPrototypeOf(x), prototype === null || prototype === Object.getPrototypeOf({}));
 
- };
 
 
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