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node_modules/es-abstract/2017/OrdinaryDefineOwnProperty.js
| 61 lines
| 2.3 KiB
| application/javascript
| JavascriptLexer
|
| r789 | 'use strict'; | |||
| var GetIntrinsic = require('../GetIntrinsic'); | ||||
| var $gOPD = require('../helpers/getOwnPropertyDescriptor'); | ||||
| var $SyntaxError = GetIntrinsic('%SyntaxError%'); | ||||
| var $TypeError = GetIntrinsic('%TypeError%'); | ||||
| var isPropertyDescriptor = require('../helpers/isPropertyDescriptor'); | ||||
| var IsAccessorDescriptor = require('./IsAccessorDescriptor'); | ||||
| var IsDataDescriptor = require('./IsDataDescriptor'); | ||||
| var IsExtensible = require('./IsExtensible'); | ||||
| var IsPropertyKey = require('./IsPropertyKey'); | ||||
| var ToPropertyDescriptor = require('./ToPropertyDescriptor'); | ||||
| var SameValue = require('./SameValue'); | ||||
| var Type = require('./Type'); | ||||
| var ValidateAndApplyPropertyDescriptor = require('./ValidateAndApplyPropertyDescriptor'); | ||||
| // https://www.ecma-international.org/ecma-262/6.0/#sec-ordinarydefineownproperty | ||||
| module.exports = function OrdinaryDefineOwnProperty(O, P, Desc) { | ||||
| if (Type(O) !== 'Object') { | ||||
| throw new $TypeError('Assertion failed: O must be an Object'); | ||||
| } | ||||
| if (!IsPropertyKey(P)) { | ||||
| throw new $TypeError('Assertion failed: P must be a Property Key'); | ||||
| } | ||||
| if (!isPropertyDescriptor({ | ||||
| Type: Type, | ||||
| IsDataDescriptor: IsDataDescriptor, | ||||
| IsAccessorDescriptor: IsAccessorDescriptor | ||||
| }, Desc)) { | ||||
| throw new $TypeError('Assertion failed: Desc must be a Property Descriptor'); | ||||
| } | ||||
| if (!$gOPD) { | ||||
| // ES3/IE 8 fallback | ||||
| if (IsAccessorDescriptor(Desc)) { | ||||
| throw new $SyntaxError('This environment does not support accessor property descriptors.'); | ||||
| } | ||||
| var creatingNormalDataProperty = !(P in O) | ||||
| && Desc['[[Writable]]'] | ||||
| && Desc['[[Enumerable]]'] | ||||
| && Desc['[[Configurable]]'] | ||||
| && '[[Value]]' in Desc; | ||||
| var settingExistingDataProperty = (P in O) | ||||
| && (!('[[Configurable]]' in Desc) || Desc['[[Configurable]]']) | ||||
| && (!('[[Enumerable]]' in Desc) || Desc['[[Enumerable]]']) | ||||
| && (!('[[Writable]]' in Desc) || Desc['[[Writable]]']) | ||||
| && '[[Value]]' in Desc; | ||||
| if (creatingNormalDataProperty || settingExistingDataProperty) { | ||||
| O[P] = Desc['[[Value]]']; // eslint-disable-line no-param-reassign | ||||
| return SameValue(O[P], Desc['[[Value]]']); | ||||
| } | ||||
| throw new $SyntaxError('This environment does not support defining non-writable, non-enumerable, or non-configurable properties'); | ||||
| } | ||||
| var desc = $gOPD(O, P); | ||||
| var current = desc && ToPropertyDescriptor(desc); | ||||
| var extensible = IsExtensible(O); | ||||
| return ValidateAndApplyPropertyDescriptor(O, P, extensible, Desc, current); | ||||
| }; | ||||