blob: 04549cd0f14578a6c265fec46ca752a783ebccd1 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
|
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
module.metadata = {
"stability": "experimental"
};
const method = require("../../method/core");
const { Class } = require("./heritage");
// Object that inherit or mix WeakRefence inn will register
// weak observes for system notifications.
const WeakReference = Class({});
exports.WeakReference = WeakReference;
// If `isWeak(object)` is `true` observer installed
// for such `object` will be weak, meaning that it will
// be GC-ed if nothing else but observer is observing it.
// By default everything except `WeakReference` will return
// `false`.
const isWeak = method("reference/weak?");
exports.isWeak = isWeak;
isWeak.define(Object, _ => false);
isWeak.define(WeakReference, _ => true);
|
