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/**
Run some code when the process exits.
The `process.on('exit')` event doesn't catch all the ways a process can exit.
This package is useful for cleaning up before exiting.
@param callback - The callback to execute when the process exits.
@returns A function that removes the hook when called.
@example
```
import exitHook = require('exit-hook');
exitHook(() => {
console.log('Exiting');
});
// You can add multiple hooks, even across files
exitHook(() => {
console.log('Exiting 2');
});
throw new Error('🦄');
//=> 'Exiting'
//=> 'Exiting 2'
// Removing an exit hook:
const unsubscribe = exitHook(() => {});
unsubscribe();
```
*/
declare function exitHook(callback: () => void): () => void;
export = exitHook;
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