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42 lines
1.2 KiB
Plaintext
42 lines
1.2 KiB
Plaintext
'use strict';
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var $gOPD = require('gopd');
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var $TypeError = require('es-errors/type');
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var isObject = require('es-object-atoms/isObject');
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var callBound = require('call-bound');
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var $isEnumerable = callBound('Object.prototype.propertyIsEnumerable');
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var hasOwn = require('hasown');
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var IsArray = require('./IsArray');
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var isPropertyKey = require('../helpers/isPropertyKey');
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var IsRegExp = require('./IsRegExp');
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var ToPropertyDescriptor = require('./ToPropertyDescriptor');
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// https://262.ecma-international.org/6.0/#sec-ordinarygetownproperty
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module.exports = function OrdinaryGetOwnProperty(O, P) {
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if (!isObject(O)) {
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throw new $TypeError('Assertion failed: O must be an Object');
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}
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if (!isPropertyKey(P)) {
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throw new $TypeError('Assertion failed: P must be a Property Key');
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}
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if (!hasOwn(O, P)) {
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return void 0;
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}
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if (!$gOPD) {
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// ES3 / IE 8 fallback
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var arrayLength = IsArray(O) && P === 'length';
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var regexLastIndex = IsRegExp(O) && P === 'lastIndex';
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return {
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'[[Configurable]]': !(arrayLength || regexLastIndex),
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'[[Enumerable]]': $isEnumerable(O, P),
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'[[Value]]': O[P],
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'[[Writable]]': true
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};
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}
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return ToPropertyDescriptor($gOPD(O, P));
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};
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