Re: [ServiceWorker] setTimeout/setInterval are unreliable in ServiceWorkers (#838)

Not sure about Ben's definition of "Safely" and I hope this is a half relevant and intelligent question.

WRT: - https://slightlyoff.github.io/ServiceWorker/spec/service_worker/#extendable-event-waituntil-method

> Do not terminate the service worker whose responsible event loop is running task until waiting for all of extendLifetimePromises settles.

Is it be possible that @mkruisselbrink  could wrap his setTimeout up in a promise like: -

function wait(time) {
  return new Promise(function(resolve, reject) {    
    var req = setTimeout(function(){resolve();}, time);
  });
}

wait(5000).then(function(resp){alert('Finished waiting');},function(err){});

. . . and such an action (***logically*** in-lining the wait) would mark the SW as immune from "idle" termination?

Then @mkruisselbrink could do a Promise.race([fromWait, fromFetch]);

function myFunction() {
    var p1 = wait(5000);
    var pa = [p1];
    Promise.race(pa).then(function(resp){
                    alert('Finished waiting'); 
                    },
                    function(err){});
}

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Reply to this email directly or view it on GitHub:
https://github.com/slightlyoff/ServiceWorker/issues/838#issuecomment-188104661