v1.1.0

Added

• Added support for treating a Context as a PromiseLike<never>.

  This is useful, for example, when you want to use a Context with a timeout to 'race' another Promise-returning operation, like an http request.

  (async () => {
    const { context } = Background.withTimeout(2000);
    const resPromise = fetch('https://foo.bar').then(res => res.json());
  
    // This will throw an Error that will either be true for isCancellationError or isDeadlineExceededError.
    const res = await Promise.race([ context, resPromise ]);
  })();

• Add support for converting a Context to an AbortSignal in environments that support these using asAbortSignal.

  This feature allows easy interoperability with APIs that support AbortSignals as a mechanism to propagate cancellation.

  For example, with fetch, adding a timeout could be as easy as:

  (async () => {
    const { context } = Background.withTimeout(2000);
    const signal = asAbortSignal(context);
  
    const res = await fetch('https://foo.bar', { signal });
    const data = await res.json();
  })();