@stdlib/assert-has-arrow-function-support NPM

Arrow Function Support

Detect native arrow function support.

Installation

npm install @stdlib/assert-has-arrow-function-support

Usage

var hasArrowFunctionSupport = require( '@stdlib/assert-has-arrow-function-support' );

hasArrowFunctionSupport()

Detects if a runtime environment supports ES2015 arrow functions such as ( a, b ) => a + b, x => x, or ( x ) => { return x*x; }.

var bool = hasArrowFunctionSupport();
// returns <boolean>

Notes

The implementation uses code evaluation, which may be problematic in browser contexts enforcing a strict content security policy (CSP).

Examples

var hasArrowFunctionSupport = require( '@stdlib/assert-has-arrow-function-support' );

var bool = hasArrowFunctionSupport();
if ( bool ) {
    console.log( 'Environment has native arrow function support.' );
} else {
    console.log( 'Environment lacks native arrow function support.' );
}

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.