onCleanup()

Register a function that runs when the component unmounts.

Signature

function onCleanup(fn: () => void): void

Parameters

Param	Type	Description
fn	() => void	Cleanup function

Examples

import { component, onCleanup, div } from "@whisq/core";

const Sub = component(() => {
  const sub = eventBus.subscribe(handler);
  onCleanup(() => sub.unsubscribe());
  return div("Listening");
});