Eddy has been working hard to get a version of dev tools being able to work with SW. We did an initial check of his work and found some issues, we will take a deeper look to understand the current state and how we could (potentially) help here. https://github.com/ejpbruel/gecko-dev/tree/worker-debugging

We have been trying this: - In order to check the work in that branch you need to disable e10s. - As well keep the SW allive, since it will die after 5 seconds of the last execution. - We had some success by doing a setInterval - With that we are able to stop the debugger attending the sw, but again, it will kill the SW so we won't be able to continue debugging. Basically we don't have still support for this, and doesn't seem that is an easy path from here, we will need to wait for our colleagues from DevTools to give a hand here.