94 lines
2.2 KiB
Markdown
94 lines
2.2 KiB
Markdown
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# opn
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> A better [node-open](https://github.com/pwnall/node-open). Opens stuff like websites, files, executables. Cross-platform.
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#### Why?
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- Actively maintained
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- Supports app arguments
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- Safer as it uses `spawn` instead of `exec`
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- Fixes most of the open `node-open` issues
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- Includes the latest [`xdg-open` script](http://cgit.freedesktop.org/xdg/xdg-utils/commit/?id=c55122295c2a480fa721a9614f0e2d42b2949c18) for Linux
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## Install
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```
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$ npm install --save opn
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```
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## Usage
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```js
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var opn = require('opn');
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opn('unicorn.png');
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// opens the image in the default image viewer
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opn('http://sindresorhus.com');
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// opens the url in the default browser
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opn('http://sindresorhus.com', {app: 'firefox'});
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// specify the app to open in
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opn('http://sindresorhus.com', {app: ['google chrome', '--incognito']});
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// specify app arguments
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```
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## API
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Uses the command `open` on OS X, `start` on Windows and `xdg-open` on other platforms.
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### opn(target, [options], [callback])
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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.
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#### target
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*Required*
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Type: `string`
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The thing you want to open. Can be a URL, file, or executable.
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Opens in the default app for the file type. Eg. URLs opens in your default browser.
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#### options
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Type: `object`
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##### wait
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Type: `boolean`
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Default: `true`
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Wait for the opened app to exit before calling the `callback`. If `false` it's called immediately when opening the app.
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On Windows you have to explicitly specify an app for it to be able to wait.
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##### app
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Type: `string`, `array`
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Specify the app to open the `target` with, or an array with the app and app arguments.
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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.
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#### callback(error)
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Type: `function`
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Called when the opened app exits, or if `wait: false`, immediately when opening.
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## Related
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- [opn-cli](https://github.com/sindresorhus/opn-cli) - CLI for this module
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## License
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MIT © [Sindre Sorhus](http://sindresorhus.com)
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