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# signal-exit [](https://travis-ci.org/tapjs/signal-exit) [](https://coveralls.io/r/tapjs/signal-exit?branch=master) [](https://www.npmjs.com/package/signal-exit) [](https://ci.appveyor.com/project/bcoe/signal-exit) [](https://github.com/conventional-changelog/standard-version) When you want to fire an event no matter how a process exits: * reaching the end of execution. * explicitly having `process.exit(code)` called. * having `process.kill(pid, sig)` called. * receiving a fatal signal from outside the process Use `signal-exit`. ```js var onExit = require('signal-exit') onExit(function (code, signal) { console.log('process exited!') }) ``` ## API `var remove = onExit(function (code, signal) {}, options)` The return value of the function is a function that will remove the handler. Note that the function *only* fires for signals if the signal would cause the proces to exit. That is, there are no other listeners, and it is a fatal signal. ## Options * `alwaysLast`: Run this handler after any other signal or exit handlers. This causes `process.emit` to be monkeypatched.