A simple Cancelable Promise for browser

npm install --save cancelable-promise

This package is based on ES6 Promise. See promise-polyfill for browser support.

CancelablePromise acts like a ES6 Promise: you can use Promise.all, Promise.race with your CancelablePromise for example. The only difference is you'll have a cancel method on your promise to cancel future execution of then or catch functions. CancelablePromise will also cancel all callbacks attached to new promises returned by then/catch.

import CancelablePromise from 'cancelable-promise';
const myPromise = new CancelablePromise((resolve) => setTimeout(() => resolve('I\'m resolved'), 100));
myPromise.then((response) => console.log(response)).then(() => console.log('not cancel'));
myPromise.cancel();
// Nothing will be displayed in console

You can run tests with npm run test