only-changed-jest-watch-plugin/example/node_modules/p-finally/index.js

Jest watch plugin for running either only the modified test (for TDD), or tests of dependant modules

'use strict';
module.exports = (promise, onFinally) => {
	onFinally = onFinally || (() => {});

	return promise.then(
		val => new Promise(resolve => {
			resolve(onFinally());
		}).then(() => val),
		err => new Promise(resolve => {
			resolve(onFinally());
		}).then(() => {
			throw err;
		})
	);
};