Firefox support

[notetiene]

I'm currently trying to implement the Firefox backend. However, given the major differences between the Firefox remote debugging protocol and the Chrome one, I think it could be nice to include a todo list here.

• Implement the Firefox Remote Debugger Protocol Backend
  • Implement the protocol API (we might look at this).
  • Implement a function to query tabs information
  • Since Firefox doesn't have a per tab protocol should we use only one process for all tabs? Also each times we make a new connection, Firefox display a prompt to accept remote debugging.
  • Implement the evaluation function
  • Implement the completion function
  • Implement the debugger functions
    - [ ] Implement the breakpoints functions
    • Implement the resume function
    • Implement the step-into function
    • Implement the step-out function
    • Implement the step-over function
    • Implement the continue function
        - [ ] Implement pausing on exceptions and get them
  • Implement the property inspector
  • Sync the console logs

That's all for now.

[NicolasPetton]

@notetiene do you want to push your commits somewhere so I could have a look?

[NicolasPetton]

@notetiene also, since until now all backends are chrome/v8 centric, there might be refactorings to do in Indium to make it easier to implement. If that's the case, don't hesitate to tell me, I'll help the best way I can.

[notetiene]

Thanks for you comments.

I'm really interested in supporting Firefox. Sadly, I don't have much time for the following 2 weeks and my current commits only cover common variables I found between the two backends.

I'll notify you when I start working on it. 😄

[NicolasPetton]

Mozilla is apparently thinking about adding support for the CDP, in which case we wouldn't have to implement a specific backend for it.

[notetiene]

@NicolasPetton That would be great! Sadly, I'm not able to see any news concerning CDP in Firefox. Is it an official project?

[NicolasPetton]

Etienne <notifications@github.com> writes:

@NicolasPetton That would be great! Sadly, I'm not able to see any news concerning CDP in Firefox. Is it an official project?

I can't find the ticket in Bugzilla anymore, but there is one. It's in their backlog IIRC, but it's something they're considering.

[dakra]

That would be great. I found a few issues on their bugtracker but non sound like it's coming anytime soon :(
https://bugzilla.mozilla.org/show_bug.cgi?id=1316741
Most recent one seems to be https://bugzilla.mozilla.org/show_bug.cgi?id=1391465

[nbfalcon]

This blog post by mozilla talks about how they are implementing CDP for the sake of puppeteer.js support.

[NicolasPetton]

I've been following their progress about this for a while, but I missed this post. @nbfalcon thanks for the link!