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Last change
on this file was 79a0317, checked in by stefan toskovski <stefantoska84@…>, 4 days ago |
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1 | 'use strict';
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2 | var DESCRIPTORS = require('../internals/descriptors');
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3 | var defineBuiltInAccessor = require('../internals/define-built-in-accessor');
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4 | var isObject = require('../internals/is-object');
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5 | var isPossiblePrototype = require('../internals/is-possible-prototype');
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6 | var toObject = require('../internals/to-object');
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7 | var requireObjectCoercible = require('../internals/require-object-coercible');
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8 |
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9 | // eslint-disable-next-line es/no-object-getprototypeof -- safe
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10 | var getPrototypeOf = Object.getPrototypeOf;
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11 | // eslint-disable-next-line es/no-object-setprototypeof -- safe
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12 | var setPrototypeOf = Object.setPrototypeOf;
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13 | var ObjectPrototype = Object.prototype;
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14 | var PROTO = '__proto__';
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15 |
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16 | // `Object.prototype.__proto__` accessor
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17 | // https://tc39.es/ecma262/#sec-object.prototype.__proto__
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18 | if (DESCRIPTORS && getPrototypeOf && setPrototypeOf && !(PROTO in ObjectPrototype)) try {
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19 | defineBuiltInAccessor(ObjectPrototype, PROTO, {
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20 | configurable: true,
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21 | get: function __proto__() {
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22 | return getPrototypeOf(toObject(this));
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23 | },
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24 | set: function __proto__(proto) {
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25 | var O = requireObjectCoercible(this);
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26 | if (isPossiblePrototype(proto) && isObject(O)) {
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27 | setPrototypeOf(O, proto);
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28 | }
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29 | }
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30 | });
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31 | } catch (error) { /* empty */ }
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