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    is-map

    2.0.2 • Public • Published

    is-map Version Badge

    dependency status dev dependency status License Downloads

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

    Example

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

    Tests

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

    Install

    npm i is-map

    DownloadsWeekly Downloads

    3,498,797

    Version

    2.0.2

    License

    MIT

    Unpacked Size

    12.7 kB

    Total Files

    12

    Last publish

    Collaborators

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