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# p-finally [](https://travis-ci.org/sindresorhus/p-finally) > [`Promise#finally()`](https://github.com/tc39/proposal-promise-finally) [ponyfill](https://ponyfill.com) - Invoked when the promise is settled regardless of outcome Useful for cleanup. ## Install ``` $ npm install --save p-finally ``` ## Usage ```js const pFinally = require('p-finally'); const dir = createTempDir(); pFinally(write(dir), () => cleanup(dir)); ``` ## API ### pFinally(promise, [onFinally]) Returns a `Promise`. #### onFinally Type: `Function` Note: Throwing or returning a rejected promise will reject `promise` with the rejection reason. ## Related - [p-try](https://github.com/sindresorhus/p-try) - `Promise#try()` ponyfill - Starts a promise chain - [More…](https://github.com/sindresorhus/promise-fun) ## License MIT © [Sindre Sorhus](https://sindresorhus.com)