# REPL
> REPL environment.
## Usage
```javascript
var repl = require( '@stdlib/repl/server' );
```
#### repl( \[options], clbk )
Starts a REPL environment.
```javascript
repl( onStart );
function onStart( error, server ) {
if ( error ) {
throw error;
}
}
```
## Examples
```javascript
var repl = require( '@stdlib/repl/server' );
// Start the REPL:
repl( onStart );
function onStart( error, server ) {
if ( error ) {
throw error;
}
// After the REPL has started, exit the process...
setTimeout( onTimeout, 2500 );
function onTimeout() {
server.close();
}
}
```
* * *
## CLI
### Usage
```text
Usage: stdlib-repl-server [options]
Options:
-h, --help Print this message.
-V, --version Print the package version.
```
### Examples
```bash
$ stdlib-repl-server
Starting REPL...
```