@primitive/is-symbol
    TypeScript icon, indicating that this package has built-in type declarations

    1.1.0 • Public • Published

    is-symbol

    NPM NPM CDN LICENSE

    Determine if a value is a symbol.

    Usage

        npm install @primitive/is-symbol --save   # Install package via NPM
        yarn add @primitive/is-symbol             # Install package via Yarn
        import { expect } from "chai";
        import isSymbol from "@primitive/is-symbol";
    
        expect(isSymbol(Symbol("Boo"))).to.be.true;
        expect(isSymbol(Symbol())).to.be.true;
    
        expect(isSymbol(undefined)).to.be.false;
        expect(isSymbol(null)).to.be.false;
        expect(isSymbol(42)).to.be.false;

    This package contains TypeScript type declarations. Furthermore, the package uses TypeScript type guards to allow type inference to influence intellisense.

        if (isSymbol(x)) {
            // IntelliSense now knows `x` is a symbol.
            let y: symbol = x;
        }

    Content Delivery Network (CDN)

    This package can be imported via unpkg as demonstrated below.

        <script src="https://unpkg.com/@primitive/is-symbol/dist/index.min.js">
        <script type="application/javascript">
            var x = Symbol("foo");
            if (isSymbol(x)) {
                // `x` is a symbol!
            }
        </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.

    Install

    npm i @primitive/is-symbol

    DownloadsWeekly Downloads

    1

    Version

    1.1.0

    License

    MIT

    Last publish

    Collaborators

    • mgthomas99