1635295 - Breakpoints take 7sec to appear for Firefox Send

Status: RESOLVED WORKSFORME

(DevTools :: Debugger, defect, P3)

Description

[:Harald Kirschner :digitarald]

STR:

• Open Debugger on https://send.firefox.com/
• Add a breakpoint in one of the source-mapped files (I picked webpack:///app/ui/body.js)
• Refresh

AR: Breakpoints are missing completely for 7sec, without any indicator
ER: Fast and responsive sources complete with their respective breakpoints

https://perfht.ml/2W31FJv

I assume its script parsing, but the profile has few hints into which JS is being executed.

Comment 1

[Jason Laster [:jlast]]

I wonder if this happens for a clean profile?

It is snappy for me
http://g.recordit.co/ylPF6IBGFL.gif

Comment 2

[:Harald Kirschner :digitarald]

Is it fast for me now in a fresh profile and my main profile. It also pauses correctly now in body.js. No idea what changed since my setup yesterday (I did enable Fission meanwhile in my main profile).