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Last change
on this file since 188ee53 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
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initial commit
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File size:
770 bytes
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| 1 | var has = require('../internals/has');
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| 2 | var toObject = require('../internals/to-object');
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| 3 | var sharedKey = require('../internals/shared-key');
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| 4 | var CORRECT_PROTOTYPE_GETTER = require('../internals/correct-prototype-getter');
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| 5 |
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| 6 | var IE_PROTO = sharedKey('IE_PROTO');
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| 7 | var ObjectPrototype = Object.prototype;
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| 8 |
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| 9 | // `Object.getPrototypeOf` method
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| 10 | // https://tc39.es/ecma262/#sec-object.getprototypeof
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| 11 | // eslint-disable-next-line es/no-object-getprototypeof -- safe
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| 12 | module.exports = CORRECT_PROTOTYPE_GETTER ? Object.getPrototypeOf : function (O) {
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| 13 | O = toObject(O);
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| 14 | if (has(O, IE_PROTO)) return O[IE_PROTO];
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| 15 | if (typeof O.constructor == 'function' && O instanceof O.constructor) {
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| 16 | return O.constructor.prototype;
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| 17 | } return O instanceof Object ? ObjectPrototype : null;
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| 18 | };
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