is-weakset

    2.0.2 • 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

    1,296,836

    Version

    2.0.2

    License

    MIT

    Unpacked Size

    15.1 kB

    Total Files

    12

    Last publish

    Collaborators

    • ljharb