Echo JS 0.11.0

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tracker1 2953 days ago. link 1 point ▲ ▼
again.. not sure why this is so hard to spread...

    const sleep = ms => new Promise(res => setTimeout(res, ms));
    ...
      await sleep(10000);

Replies

MaxArt 2953 days ago. link 1 point ▲ ▼
Would be nice to have a `wake` function that cancels the timeout, rejecting the promise. Something like Angular's $timeout.
But I guess you need at least a bunch of lines for that.
xab 2952 days ago. link 1 point ▲ ▼
Cancellable promises would be nice, to be exact. It's not the timeout that hurts for me, but the fetch.
MaxArt 2952 days ago. link 1 point ▲ ▼
Indeed, it's one of the main arguments about the future development of JS promises.

Also, `setTimeout` should be updated to become a promise (alas, won't happen because `setInterval` can't be promisified too).
xat 2952 days ago. link 3 points ▲ ▼
Maybe Promises are just the wrong tool for this kind of stuff in general. 

Interestingly it would be no problem solving these problems with Observables. Cancelation can be done with `dispose` and  setInterval would also be trivial to implement.
xat 2953 days ago. link 1 point ▲ ▼
I agree on that. In about 30% of the cases, that I use setTimeout, there is some cancelation logic involved (polling, debounce etc.).