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39 lines
1.2 KiB
Markdown
39 lines
1.2 KiB
Markdown
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# capture-exit
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[](https://ci.appveyor.com/project/embercli/capture-exit/branch/master)
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[](https://travis-ci.org/ember-cli/capture-exit)
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Allow cooprative async exit handlers, we unfortunately must hijack
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process.exit.
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It allows a handler to ensure exit, without that exit handler impeding other
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similar handlers
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for example, see: [sindresorhus/ora#27](https://github.com/sindresorhus/ora/issues/27)
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Differences between `process.on('exit')` and `captureExit.onExit(...)` => https://github.com/ember-cli/capture-exit/issues/12
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### Installation
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```sh
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yarn add capture-exit
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// or
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npm install --save capture-exit
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```
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### Usage
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```js
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// as early in startup as possible
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require('capture-exit').captureExit();
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// when you want to schedule some work on exit:
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function onExit() {
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return something.processWillExit(); // you can return promises, which will pause exit until fulfilled
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}
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require('capture-exit').onExit(onExit); // add an exit handler
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require('capture-exit').offExit(onExit); // allows one to remove an exit handle if it is not longer required
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```
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