How to turn off a "map" callback?

Question

How to turn off a "map" callback?

Closed this issue 3 years ago · 5 comments

I might use map on a stream down in a component that later gets unmounted. How do I stop the callback from continuing to happen?

I may be thinking about it wrong. If so, please correct me. I'm just getting started with this sort of state management.

Answer 1 · 2021-04-28T11:26:21.000Z

hi @gbishop

which stream library are you using?

Answer 2 · 2021-04-28T14:20:04.000Z

I was using meiosis-setup simple-stream (as I vaguely recall). I should have posted the question there.

I solved my problem by making my function conditional on the element being connected and later moved to my own code using the meiosis idea.

Answer 3 · 2021-04-28T18:59:40.000Z

@gbishop posting here is fine! Glad it worked out.

Answer 4 · 2021-04-28T19:01:43.000Z

For anyone referencing this issue, there isn't a way yet on simple-stream to end the map callback, solution would be to switch to flyd or mithril-stream and use end.

Answer 5 · 2021-06-27T19:00:27.000Z

The end stream function will be available in meiosis-setup's simple-stream in the next release (5.2.0). Prior to release you will find it available in version 5.2.0-beta.2.