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18 lines
713 B
18 lines
713 B
3 years ago
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var has = require('../internals/has');
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var toObject = require('../internals/to-object');
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var sharedKey = require('../internals/shared-key');
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var CORRECT_PROTOTYPE_GETTER = require('../internals/correct-prototype-getter');
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var IE_PROTO = sharedKey('IE_PROTO');
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var ObjectPrototype = Object.prototype;
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// `Object.getPrototypeOf` method
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// https://tc39.github.io/ecma262/#sec-object.getprototypeof
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module.exports = CORRECT_PROTOTYPE_GETTER ? Object.getPrototypeOf : function (O) {
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O = toObject(O);
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if (has(O, IE_PROTO)) return O[IE_PROTO];
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if (typeof O.constructor == 'function' && O instanceof O.constructor) {
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return O.constructor.prototype;
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} return O instanceof Object ? ObjectPrototype : null;
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};
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