onCleanup

function onCleanup(onDispose: MaybeDispose): MaybeDispose;

Allows you to register callbacks that are invoked when Actions, Effects or Watchers rerun or get disposed.

Example

import { effect, onCleanup } from "@monstermann/signals";

effect(() => {
    // Do something before this runs next time, or gets disposed:
    onCleanup(() => {});
});