navigator.serviceWorker.ready remain resolved after unregister

[toxic-johann]

navigator.serviceWorker.ready will be resolved when worker is active.
but if we unregister the worker, the ready attribute remain resolved.
In the document, it has not specified that the ready attribute will be reset.
Will it be strange ?

[jungkees]

Once a client gets a controller, it's being controlled until the client is unloaded/terminated. Calling unregister() sets the uninstalling flag, but it tries to clear the registration only when all the controlled clients are closed. That said, I don't think we should reset the ready promise on an unregister attempt.

[wanderview]

Note, it is possible to use the .ready flag and not become controlled. Consider a window that is already open before .register() is called. So its possible for the service worker to go away with a ready promise settled.

[toxic-johann]

@wanderview Yes. I agree with that. So maybe controllerchange event is much better in that situation?
@jungkees Thanks for your explanation. Now i understand what it means.

[wanderview]

@toxic-johann Yea, I think writing a helper that uses .controller and controllerchange event will be much more reliable if this situation can realistically occur for you.

[toxic-johann]

Thanks a lot~