Currently, source maps in console has to be enabled manually in about:config because it is still in its experimental state. This bug is to enable this feature by default only on Nightly, and so we can test it out before we can enable it in for everyone.

As per Brian's comment in [1], this patch enables source maps in web console in Nightly builds. [1]: https://bugzilla.mozilla.org/show_bug.cgi?id=1289570#c4

Comment on attachment 8784107 [details] [diff] [review] 1297498.patch Review of attachment 8784107 [details] [diff] [review]: ----------------------------------------------------------------- Thanks! Please do a try push before marking for checkin

As per discussion, let's focus on getting sourcemaps working on the client before turning them on in console (first for new debugger frontend, then move that up to toolbox, then have webconsole use the toolbox). Maybe that will shake out the test failure we've been seeing also

The client-side source map service has now landed. So we can now make use of it in the console. toolbox.sourceMapService will get you the service.

(In reply to Patrick Brosset <:pbro> from comment #10) > The client-side source map service has now landed. So we can now make use of > it in the console. > toolbox.sourceMapService will get you the service. Yes, definitely agree. I am updating the blocking field. Honza

This was fixed by bug 1359144, which changed the console to use client-side source maps.