# Async/Await Support
> Detect native [`async`][mdn-async]/[`await`][mdn-await] support.
## Usage
```javascript
var hasAsyncAwaitSupport = require( '@stdlib/assert/has-async-await-support' );
```
#### hasAsyncAwaitSupport()
Detects if a runtime environment supports ES2017 [`async`][mdn-async]/[`await`][mdn-await].
```javascript
var bool = hasAsyncAwaitSupport();
// 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 hasAsyncAwaitSupport = require( '@stdlib/assert/has-async-await-support' );
var bool = hasAsyncAwaitSupport();
if ( bool ) {
console.log( 'Environment has native async/await support.' );
} else {
console.log( 'Environment lacks native async/await support.' );
}
```
* * *
## CLI
### Usage
```text
Usage: has-async-await-support [options]
Options:
-h, --help Print this message.
-V, --version Print the package version.
```
### Examples
```bash
$ has-async-await-support
```
[mdn-async]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/async_function
[mdn-await]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/await
[mdn-csp]: https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP