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Add a simple `WeakReference` utility that we can use until the language provides something on its own. PR-URL: #25993 Fixes: #23862 Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Сковорода Никита Андреевич <chalkerx@gmail.com> Reviewed-By: Vladimir de Turckheim <vlad2t@hotmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Refael Ackermann <refack@gmail.com>
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// Flags: --expose-internals --expose-gc | ||
'use strict'; | ||
require('../common'); | ||
const assert = require('assert'); | ||
const { internalBinding } = require('internal/test/binding'); | ||
const { WeakReference } = internalBinding('util'); | ||
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let obj = { hello: 'world' }; | ||
const ref = new WeakReference(obj); | ||
assert.strictEqual(ref.get(), obj); | ||
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setImmediate(() => { | ||
obj = null; | ||
global.gc(); | ||
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assert.strictEqual(ref.get(), undefined); | ||
}); |