main
Last change
on this file was d565449, checked in by stefan toskovski <stefantoska84@…>, 4 weeks ago |
Update repo after prototype presentation
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100644
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File size:
1.2 KB
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[d565449] | 1 | 'use strict';
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| 2 |
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| 3 | var $gOPD = require('gopd');
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| 4 | var $TypeError = require('es-errors/type');
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| 5 |
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| 6 | var callBound = require('call-bind/callBound');
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| 7 |
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| 8 | var $isEnumerable = callBound('Object.prototype.propertyIsEnumerable');
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| 9 |
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| 10 | var hasOwn = require('hasown');
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| 11 |
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| 12 | var IsArray = require('./IsArray');
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| 13 | var IsPropertyKey = require('./IsPropertyKey');
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| 14 | var IsRegExp = require('./IsRegExp');
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| 15 | var ToPropertyDescriptor = require('./ToPropertyDescriptor');
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| 16 | var Type = require('./Type');
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| 17 |
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| 18 | // https://262.ecma-international.org/6.0/#sec-ordinarygetownproperty
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| 19 |
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| 20 | module.exports = function OrdinaryGetOwnProperty(O, P) {
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| 21 | if (Type(O) !== 'Object') {
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| 22 | throw new $TypeError('Assertion failed: O must be an Object');
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| 23 | }
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| 24 | if (!IsPropertyKey(P)) {
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| 25 | throw new $TypeError('Assertion failed: P must be a Property Key');
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| 26 | }
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| 27 | if (!hasOwn(O, P)) {
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| 28 | return void 0;
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| 29 | }
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| 30 | if (!$gOPD) {
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| 31 | // ES3 / IE 8 fallback
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| 32 | var arrayLength = IsArray(O) && P === 'length';
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| 33 | var regexLastIndex = IsRegExp(O) && P === 'lastIndex';
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| 34 | return {
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| 35 | '[[Configurable]]': !(arrayLength || regexLastIndex),
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| 36 | '[[Enumerable]]': $isEnumerable(O, P),
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| 37 | '[[Value]]': O[P],
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| 38 | '[[Writable]]': true
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| 39 | };
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| 40 | }
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| 41 | return ToPropertyDescriptor($gOPD(O, P));
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| 42 | };
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