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

    1.1.0 • Public • Published

    is-string

    NPM NPM CDN LICENSE

    Determine if a value is a string.

    A value is a string if it is of primitive type string, or is an instance of reference type String.

    Usage

        npm install @primitive/is-string --save   # Install package via NPM 
        yarn add @primitive/is-string             # Install package via Yarn 
        import { expect } from "chai";
        import isString from "@primitive/is-string";
     
        expect(isString("Boo")).to.be.true;
        expect(isString("")).to.be.true;
        expect(isString(new String("Boo"))).to.be.true;
     
        expect(isString(undefined)).to.be.false;
        expect(isString(null)).to.be.false;
        expect(isString(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 (isString(x)) {
            // IntelliSense now knows `x` is a string.
            let y: string = x;
        }

    Content Delivery Network (CDN)

    This package can be imported via unpkg as demonstrated below.

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

    DownloadsWeekly Downloads

    8

    Version

    1.1.0

    License

    MIT

    Last publish

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