asdf-games/node_modules/opn/readme.md

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# opn
> A better [node-open](https://github.com/pwnall/node-open). Opens stuff like websites, files, executables. Cross-platform.
#### Why?
- Actively maintained
- Supports app arguments
- Safer as it uses `spawn` instead of `exec`
- Fixes most of the open `node-open` issues
- Includes the latest [`xdg-open` script](http://cgit.freedesktop.org/xdg/xdg-utils/commit/?id=c55122295c2a480fa721a9614f0e2d42b2949c18) for Linux
## Install
```
$ npm install --save opn
```
## Usage
```js
var opn = require('opn');
opn('unicorn.png');
// opens the image in the default image viewer
opn('http://sindresorhus.com');
// opens the url in the default browser
opn('http://sindresorhus.com', {app: 'firefox'});
// specify the app to open in
opn('http://sindresorhus.com', {app: ['google chrome', '--incognito']});
// specify app arguments
```
## API
Uses the command `open` on OS X, `start` on Windows and `xdg-open` on other platforms.
### opn(target, [options], [callback])
Returns the [spawned child process](https://nodejs.org/api/child_process.html#child_process_class_childprocess). You'd normally not need to use this for anything, but it can be useful if you'd like to attach custom event listeners or perform other operations directly on the spawned process.
#### target
*Required*
Type: `string`
The thing you want to open. Can be a URL, file, or executable.
Opens in the default app for the file type. Eg. URLs opens in your default browser.
#### options
Type: `object`
##### wait
Type: `boolean`
Default: `true`
Wait for the opened app to exit before calling the `callback`. If `false` it's called immediately when opening the app.
On Windows you have to explicitly specify an app for it to be able to wait.
##### app
Type: `string`, `array`
Specify the app to open the `target` with, or an array with the app and app arguments.
The app name is platform dependent. Don't hard code it in reusable modules. Eg. Chrome is `google chrome` on OS X, `google-chrome` on Linux and `chrome` on Windows.
#### callback(error)
Type: `function`
Called when the opened app exits, or if `wait: false`, immediately when opening.
## Related
- [opn-cli](https://github.com/sindresorhus/opn-cli) - CLI for this module
## License
MIT © [Sindre Sorhus](http://sindresorhus.com)