setTimeout is used as scheduler in latest Chrome

[lextiz]

Latest Chrome does not have window.navigator.standalone defined (see https://github.com/petkaantonov/bluebird/blob/master/src/schedule.js#L26) always has function chrome.loadTimes, because of this hasDevTools always returns true in Chrome. It looks like undesired behavior.

[benjamingr]

That part is inside a !..

The reason that navigator.standalone is there is documented 3 lines above.

[benjamingr]

You're right http://jsfiddle.net/10o58rup/ - it seems to be using setTimeout.

[benjamingr]

Hmm, ((typeof MutationObserver !== "undefined") && !(typeof window !== "undefined" && window.navigator && window.navigator.standalone)) evaluates to true in latest chrome. Odd...

[lextiz]

Maybe it not the case when bluebird is loaded?

[benjamingr]

Unlikely - http://jsfiddle.net/ufpLxvqn/

I think this is not a bug, bluebird resets the scheduler to setTimeout if you have the devtools open so async stack traces correctly work.

Can you try to reproduce with devtools closed?

[lextiz]

Yes. Will update when finished.

[lextiz]

I have reproduced this with debugger closed: closed all debugger instances, closed all chrome processes, opened jsfiddle link, I see setTimeout there. Do you see MutationObserver implementation instead?

[lextiz]

I see that (typeof chrome !== "undefined" && chrome && typeof chrome.loadTimes === "function") evaluates to true when debugger tools are closed

[lextiz]

What is your Chrome version? I have 47.0.2526.80 m.

[petkaantonov]

Devtools doesn't matter, it will still use normal scheduler. Just without trampoline.

[benjamingr]

Petka step through the code, it uses the regular scheduled and then overrides it with setTimeout

[petkaantonov]

Can you link to line?