is-callable
    DefinitelyTyped icon, indicating that this package has TypeScript declarations provided by the separate @types/is-callable package

    1.2.4 • Public • Published

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    Is this JS value callable? Works with Functions and GeneratorFunctions, despite ES6 @@toStringTag.

    Example

    var isCallable = require('is-callable');
    var assert = require('assert');
    
    assert.notOk(isCallable(undefined));
    assert.notOk(isCallable(null));
    assert.notOk(isCallable(false));
    assert.notOk(isCallable(true));
    assert.notOk(isCallable([]));
    assert.notOk(isCallable({}));
    assert.notOk(isCallable(/a/g));
    assert.notOk(isCallable(new RegExp('a', 'g')));
    assert.notOk(isCallable(new Date()));
    assert.notOk(isCallable(42));
    assert.notOk(isCallable(NaN));
    assert.notOk(isCallable(Infinity));
    assert.notOk(isCallable(new Number(42)));
    assert.notOk(isCallable('foo'));
    assert.notOk(isCallable(Object('foo')));
    
    assert.ok(isCallable(function () {}));
    assert.ok(isCallable(function* () {}));
    assert.ok(isCallable(x => x * x));

    Install

    Install with

    npm install is-callable
    

    Tests

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

    Install

    npm i is-callable

    DownloadsWeekly Downloads

    25,604,894

    Version

    1.2.4

    License

    MIT

    Unpacked Size

    20.1 kB

    Total Files

    12

    Last publish

    Collaborators

    • ljharb