55 lines
2.1 KiB
JavaScript
55 lines
2.1 KiB
JavaScript
|
'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);
|
||
|
|
};
|