User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:58.0) Gecko/20100101 Firefox/58.0 Build ID: 20171103003834 Steps to reproduce: I ran Gulp to process my LESS files with css source-maps. Before this update, they used to work fine. Now only see the .css fiies not the .less files. Actual results: CSS Source maps were generated, and they do work in the Firefox, just not Firefox Developer Edition. Expected results: Should be able to see the .less file sources.
I wrote a simple less example here: https://tromey.github.io/source-map-examples/ This works for me using a recent-ish artifact build. Can you try it and see if it works for you? Direct link: https://tromey.github.io/source-map-examples/less/index.html Also make sure you have the correct pref enabled. It's available in the devtools options pane. If that link does work for you, then I wonder what's different about your setup. I used lessc --source-map-map-inline
Forgot to mark NI.
Hi Tom Trommey, I tried the links you gave me, and they do work. So maybe there is something wrong with our gulp tasks. Working with my engineer to see what could be wrong. It is strange though, because we did not have any issues until the recent updates to Firefox/Firefox Developer Edition. One thing tho, we generate separate css.map files for each less file. We do not inline our source maps. Is this required?
(In reply to michael.simonson from comment #3) > One thing tho, we generate separate css.map files for each less file. We do > not inline our source maps. Is this required? No, that's not required. What option are you using? I could try that.