boyan_k/reValuate
boyan_k/reValuate
Archived
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
This repository has been archived on 2022-03-12. You can view files and clone it, but cannot push or open issues or pull requests.
reValuate/node_modules/is-weakmap/README.md
Yamozha 7256d79e2c yeet
2021-04-02 02:24:13 +03:00

1.6 KiB
Raw Permalink Blame History

is-weakmap Version Badge

Build Status dependency status dev dependency status License Downloads

npm badge

Is this value a JS WeakMap? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Example

var isWeakMap = require('is-weakmap');
assert(!isWeakMap(function () {}));
assert(!isWeakMap(null));
assert(!isWeakMap(function* () { yield 42; return Infinity; });
assert(!isWeakMap(Symbol('foo')));
assert(!isWeakMap(1n));
assert(!isWeakMap(Object(1n)));

assert(!isWeakMap(new Set()));
assert(!isWeakMap(new WeakSet()));
assert(!isWeakMap(new Map()));

assert(isWeakMap(new WeakMap()));

class MyWeakMap extends WeakMap {}
assert(isWeakMap(new MyWeakMap()));

Tests

Simply clone the repo, npm install, and run npm test