@stdlib/assert-is-class NPM

isClass

Test if a value is a class.

Installation

npm install @stdlib/assert-is-class

Usage

var isClass = require( '@stdlib/assert-is-class' );

isClass( value )

Tests if a value is a class.

var bool = isClass( class Animal {
    speak() {
        return this;
    }
} );
// returns true

var Rectangle = class {
    constructor( height, width ) {
        this.height = height;
        this.width = width;
    }
};

bool = isClass( Rectangle );
// returns true

bool = isClass( null );
// returns false

Examples

var isClass = require( '@stdlib/assert-is-class' );

var bool = isClass( class Person {} );
// returns true

bool = isClass( function Person() {} );
// returns false

bool = isClass( [] );
// returns false

bool = isClass( {} );
// returns false

bool = isClass( null );
// returns false

Notice

This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.