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- 'use strict';
- var $gOPD = require('gopd');
- var $SyntaxError = require('es-errors/syntax');
- var $TypeError = require('es-errors/type');
- var isPropertyDescriptor = require('../helpers/records/property-descriptor');
- var IsAccessorDescriptor = require('./IsAccessorDescriptor');
- 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://262.ecma-international.org/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(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);
- };
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