# Arrow Function Support
> Detect native [`arrow function`][mdn-arrow-function] support.
## Usage
```javascript
var hasArrowFunctionSupport = require( '@stdlib/assert/has-arrow-function-support' );
```
#### hasArrowFunctionSupport()
Detects if a runtime environment supports ES2015 [`arrow functions`][mdn-arrow-function]` such as `( a, b ) => a + b`, `x => x`, or `( x ) => { return x*x; }`.
```javascript
var bool = hasArrowFunctionSupport();
// returns
```
## Notes
- The implementation uses code evaluation, which may be problematic in browser contexts enforcing a strict [content security policy][mdn-csp] (CSP).
## Examples
```javascript
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.' );
}
```
* * *
## CLI
### Usage
```text
Usage: has-arrow-function-support [options]
Options:
-h, --help Print this message.
-V, --version Print the package version.
```
### Examples
```bash
$ has-arrow-function-support
```
[mdn-arrow-function]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions
[mdn-csp]: https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP