Broadcast events

[adamchainz]

Description

Within a single browser, the SharedWorker only refreshes the latest opened tab. That's a good feature, it prevents a thundering herd.

But if you open several browsers or use isolated sessions within one browser, several SharedWorkers will run and connect to the events view. But unfortunately the threading event will mean only one of these running events views will actually pass the reload message to one of the browsers.

It would be good to use some kind of thread messaging construct to pass the event to all relevant running threads from event views. Thus, one might open a couple browsers to check between their incompatibilities, and see them all reload.