You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
50 lines
2.3 KiB
50 lines
2.3 KiB
'use strict';
|
|
var $ = require('../internals/export');
|
|
var call = require('../internals/function-call');
|
|
var anObject = require('../internals/an-object');
|
|
var isObject = require('../internals/is-object');
|
|
var isDataDescriptor = require('../internals/is-data-descriptor');
|
|
var fails = require('../internals/fails');
|
|
var definePropertyModule = require('../internals/object-define-property');
|
|
var getOwnPropertyDescriptorModule = require('../internals/object-get-own-property-descriptor');
|
|
var getPrototypeOf = require('../internals/object-get-prototype-of');
|
|
var createPropertyDescriptor = require('../internals/create-property-descriptor');
|
|
|
|
// `Reflect.set` method
|
|
// https://tc39.es/ecma262/#sec-reflect.set
|
|
function set(target, propertyKey, V /* , receiver */) {
|
|
var receiver = arguments.length < 4 ? target : arguments[3];
|
|
var ownDescriptor = getOwnPropertyDescriptorModule.f(anObject(target), propertyKey);
|
|
var existingDescriptor, prototype, setter;
|
|
if (!ownDescriptor) {
|
|
if (isObject(prototype = getPrototypeOf(target))) {
|
|
return set(prototype, propertyKey, V, receiver);
|
|
}
|
|
ownDescriptor = createPropertyDescriptor(0);
|
|
}
|
|
if (isDataDescriptor(ownDescriptor)) {
|
|
if (ownDescriptor.writable === false || !isObject(receiver)) return false;
|
|
if (existingDescriptor = getOwnPropertyDescriptorModule.f(receiver, propertyKey)) {
|
|
if (existingDescriptor.get || existingDescriptor.set || existingDescriptor.writable === false) return false;
|
|
existingDescriptor.value = V;
|
|
definePropertyModule.f(receiver, propertyKey, existingDescriptor);
|
|
} else definePropertyModule.f(receiver, propertyKey, createPropertyDescriptor(0, V));
|
|
} else {
|
|
setter = ownDescriptor.set;
|
|
if (setter === undefined) return false;
|
|
call(setter, receiver, V);
|
|
} return true;
|
|
}
|
|
|
|
// MS Edge 17-18 Reflect.set allows setting the property to object
|
|
// with non-writable property on the prototype
|
|
var MS_EDGE_BUG = fails(function () {
|
|
var Constructor = function () { /* empty */ };
|
|
var object = definePropertyModule.f(new Constructor(), 'a', { configurable: true });
|
|
// eslint-disable-next-line es/no-reflect -- required for testing
|
|
return Reflect.set(Constructor.prototype, 'a', 1, object) !== false;
|
|
});
|
|
|
|
$({ target: 'Reflect', stat: true, forced: MS_EDGE_BUG }, {
|
|
set: set
|
|
});
|
|
|