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    which-typed-array

    1.1.8 • Public • Published

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    Which kind of Typed Array is this JavaScript value? Works cross-realm, without instanceof, and despite Symbol.toStringTag.

    Example

    var whichTypedArray = require('which-typed-array');
    var assert = require('assert');
    
    assert.equal(false, whichTypedArray(undefined));
    assert.equal(false, whichTypedArray(null));
    assert.equal(false, whichTypedArray(false));
    assert.equal(false, whichTypedArray(true));
    assert.equal(false, whichTypedArray([]));
    assert.equal(false, whichTypedArray({}));
    assert.equal(false, whichTypedArray(/a/g));
    assert.equal(false, whichTypedArray(new RegExp('a', 'g')));
    assert.equal(false, whichTypedArray(new Date()));
    assert.equal(false, whichTypedArray(42));
    assert.equal(false, whichTypedArray(NaN));
    assert.equal(false, whichTypedArray(Infinity));
    assert.equal(false, whichTypedArray(new Number(42)));
    assert.equal(false, whichTypedArray('foo'));
    assert.equal(false, whichTypedArray(Object('foo')));
    assert.equal(false, whichTypedArray(function () {}));
    assert.equal(false, whichTypedArray(function* () {}));
    assert.equal(false, whichTypedArray(x => x * x));
    assert.equal(false, whichTypedArray([]));
    
    assert.equal('Int8Array', whichTypedArray(new Int8Array()));
    assert.equal('Uint8Array', whichTypedArray(new Uint8Array()));
    assert.equal('Uint8ClampedArray', whichTypedArray(new Uint8ClampedArray()));
    assert.equal('Int16Array', whichTypedArray(new Int16Array()));
    assert.equal('Uint16Array', whichTypedArray(new Uint16Array()));
    assert.equal('Int32Array', whichTypedArray(new Int32Array()));
    assert.equal('Uint32Array', whichTypedArray(new Uint32Array()));
    assert.equal('Float32Array', whichTypedArray(new Float32Array()));
    assert.equal('Float64Array', whichTypedArray(new Float64Array()));
    assert.equal('BigInt64Array', whichTypedArray(new BigInt64Array()));
    assert.equal('BigUint64Array', whichTypedArray(new BigUint64Array()));

    Tests

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

    Install

    npm i which-typed-array

    DownloadsWeekly Downloads

    5,137,754

    Version

    1.1.8

    License

    MIT

    Unpacked Size

    31.3 kB

    Total Files

    10

    Last publish

    Collaborators

    • ljharb