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is-weakset

2.0.1 • Public • Published

is-weakset Version Badge

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

Example

var isWeakSet = require('is-weakset');
assert(!isWeakSet(function () {}));
assert(!isWeakSet(null));
assert(!isWeakSet(function* () { yield 42; return Infinity; });
assert(!isWeakSet(Symbol('foo')));
assert(!isWeakSet(1n));
assert(!isWeakSet(Object(1n)));
 
assert(!isWeakSet(new Set()));
assert(!isWeakSet(new WeakMap()));
assert(!isWeakSet(new Map()));
 
assert(isWeakSet(new WeakSet()));
 
class MyWeakSet extends WeakSet {}
assert(isWeakSet(new MyWeakSet()));

Tests

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

Install

npm i is-weakset

DownloadsWeekly Downloads

898,471

Version

2.0.1

License

MIT

Unpacked Size

10.2 kB

Total Files

10

Last publish

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