Is this value a JS WeakRef? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
[![npm badge][11]][1]
Is this value a JS WeakRef? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
var isWeakRef = require('is-weakref');
assert(!isWeakRef(function () {}));
assert(!isWeakRef(null));
assert(!isWeakRef(function* () { yield 42; return Infinity; });
assert(!isWeakRef(Symbol('foo')));
assert(!isWeakRef(1n));
assert(!isWeakRef(Object(1n)));
assert(!isWeakRef(new Set()));
assert(!isWeakRef(new WeakSet()));
assert(!isWeakRef(new Map()));
assert(!isWeakRef(new WeakMap()));
assert(isWeakRef(new WeakRef({})));
class MyWeakRef extends WeakRef {}
assert(isWeakRef(new MyWeakRef({})));
Simply clone the repo, npm install, and run npm test
FAQs
Is this value a JS WeakRef? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
The npm package is-weakref receives a total of 31,688,560 weekly downloads. As such, is-weakref popularity was classified as popular.
We found that is-weakref demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Research
/Security News
Undocumented protestware found in 28 npm packages disrupts UI for Russian-language users visiting Russian and Belarusian domains.
Research
/Security News
North Korean threat actors deploy 67 malicious npm packages using the newly discovered XORIndex malware loader.
Security News
Meet Socket at Black Hat & DEF CON 2025 for 1:1s, insider security talks at Allegiant Stadium, and a private dinner with top minds in software supply chain security.