is-value

Determine if a value is not undefined or null.

Usage

    npm install @typeforce/is-value --save   # Install package via NPM

    import { expect } from "chai";
    import isValue from "@typeforce/is-value";

    expect(isValue(({ x: 42 }).y)).to.be.true;
    expect(isValue(false)).to.be.true;
    expect(isValue(42)).to.be.true;

    expect(isValue(undefined)).to.be.false;
    expect(isValue(null)).to.be.false;

This package contains TypeScript type declarations.

Content Delivery Network (CDN)

This package can be imported via unpkg as demonstrated below.

    <script src="https://unpkg.com/@typeforce/is-value/dist/index.min.js"></script>
    <script type="application/javascript">
        var x = "foo";
        if (isValue(x)) {
            // `x` is not null or undefined!
        }
    </script>

Build & Test

This package uses Gulp for building, and Chai and Mocha for testing.

    npm install     # Installs dependencies.
    npm run build   # Build the project.

    npm test       # Run tests.

License

Refer to the LICENSE file for license information.