Using AbortSignal in Node.js

We recently added the the Web platform AbortController and AbortSignal APIs into Node.js and have been busy making them the idiomatic way of canceling asynchronous operations throughout the Node.js core API. In this post, I introduce the APIs and illustrate how they can be used. Read More: https://www.nearform.com/blog/using-abortsignal-in-node-js/

async function someLongRunningTask(options = {}) {
  const { signal } = { ...options };
  if (signal.aborted === true)
    throw new Error('Operation canceled');
  
  const taskDone = new AbortController();
  signal.addEventListener('abort', () => {
    // logic necessary to cancel the async task
  }, {
    once: true,
    signal: taskDone.signal
  });
  try {
    // ... do the async work
    if (signal.aborted)
      throw new Error('Operation canceled');
    // ... do more async work
  } finally {
    // Remove the abort event listener to avoid
    // leaking memory.
    taskDone.abort();
  }
}