object-get-prototype-of.js
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object-get-prototype-of.js
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	var hasOwn = require('../internals/has-own-property');
	var isCallable = require('../internals/is-callable');
	var toObject = require('../internals/to-object');
	var sharedKey = require('../internals/shared-key');
	var CORRECT_PROTOTYPE_GETTER = require('../internals/correct-prototype-getter');

	var IE_PROTO = sharedKey('IE_PROTO');
	var $Object = Object;
	var ObjectPrototype = $Object.prototype;

	// `Object.getPrototypeOf` method
	// https://tc39.es/ecma262/#sec-object.getprototypeof
	// eslint-disable-next-line es/no-object-getprototypeof -- safe
	module.exports = CORRECT_PROTOTYPE_GETTER ? $Object.getPrototypeOf : function (O) {
	var object = toObject(O);
	if (hasOwn(object, IE_PROTO)) return object[IE_PROTO];
	var constructor = object.constructor;
	if (isCallable(constructor) && object instanceof constructor) {
	return constructor.prototype;
	} return object instanceof $Object ? ObjectPrototype : null;
	};