Add debounce on reload-listener.js

[Mte90]

Ref: #22

I am not sure about the ms for the debounce.

[adamchainz]

Did you test this? It looks like it won’t work as the debounce calls won’t share the timer. Also testing would help find an appropriate timeout.

[adamchainz]

Please also add a changelog note.

[Mte90]

So the debounce function is executed but not the timeout, my guess is that is something that in a worker act differently...

[Mte90]

So for my investigation the debounce doesn't work as it is inside a sharedworker, so the timer is resetted everytime and not kept in memory.
I don't have experience with workers and I am not able to investigate further.

[Mte90]

Other thread that confirms that the shared worker doesn't remember the previous timeout so the debounce doesn't work:

• https://stackoverflow.com/questions/31359805/javascript-web-worker-how-to-ignore-all-messages-except-the-last-one
• https://stackoverflow.com/questions/42611906/how-to-tell-webworker-to-discard-all-but-the-latest-postmessage-data
  I never used them

[adamchainz]

I’m pretty sure the client-side debounce will work, because the worker process is long-lived. This PR currently edits reload-listener.js, which runs in the browser tab. It should edit reload-worker.js, the worker script.

Keeping open so you or I or someone can pick it up.

[Mte90]

I don't have time to work on that so this is why I closed it as there is already a ticket about it.