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54 lines
2.1 KiB
54 lines
2.1 KiB
'use strict'; |
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var $gOPD = require('gopd'); |
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var $SyntaxError = require('es-errors/syntax'); |
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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 isPropertyDescriptor = require('../helpers/records/property-descriptor'); |
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var IsAccessorDescriptor = require('./IsAccessorDescriptor'); |
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var IsExtensible = require('./IsExtensible'); |
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var isPropertyKey = require('../helpers/isPropertyKey'); |
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var ToPropertyDescriptor = require('./ToPropertyDescriptor'); |
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var SameValue = require('./SameValue'); |
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var ValidateAndApplyPropertyDescriptor = require('./ValidateAndApplyPropertyDescriptor'); |
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// https://262.ecma-international.org/6.0/#sec-ordinarydefineownproperty |
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module.exports = function OrdinaryDefineOwnProperty(O, P, Desc) { |
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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 (!isPropertyDescriptor(Desc)) { |
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throw new $TypeError('Assertion failed: Desc must be a Property Descriptor'); |
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} |
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if (!$gOPD) { |
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// ES3/IE 8 fallback |
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if (IsAccessorDescriptor(Desc)) { |
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throw new $SyntaxError('This environment does not support accessor property descriptors.'); |
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} |
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var creatingNormalDataProperty = !(P in O) |
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&& Desc['[[Writable]]'] |
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&& Desc['[[Enumerable]]'] |
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&& Desc['[[Configurable]]'] |
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&& '[[Value]]' in Desc; |
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var settingExistingDataProperty = (P in O) |
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&& (!('[[Configurable]]' in Desc) || Desc['[[Configurable]]']) |
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&& (!('[[Enumerable]]' in Desc) || Desc['[[Enumerable]]']) |
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&& (!('[[Writable]]' in Desc) || Desc['[[Writable]]']) |
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&& '[[Value]]' in Desc; |
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if (creatingNormalDataProperty || settingExistingDataProperty) { |
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O[P] = Desc['[[Value]]']; // eslint-disable-line no-param-reassign |
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return SameValue(O[P], Desc['[[Value]]']); |
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} |
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throw new $SyntaxError('This environment does not support defining non-writable, non-enumerable, or non-configurable properties'); |
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} |
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var desc = $gOPD(O, P); |
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var current = desc && ToPropertyDescriptor(desc); |
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var extensible = IsExtensible(O); |
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return ValidateAndApplyPropertyDescriptor(O, P, extensible, Desc, current); |
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};
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