I used to do it all the time too and hated having to write javascript precisely because of the toolchain limitations. Eventually I settled for Chrome Debugger

I used to do it all the time too and hated having to write javascript precisely because of the toolchain limitations. Eventually I settled for Chrome Debugger once they added the ability to map the code to a workspace folder, so I mapped the webstorm project where the files came from, closing the loop. however webstorm doesn't republish until I alt+tab to it and doesn't have a local history feature as nice as Eclipse, but it's close. also any query parameter on the scripts breaks the mapping to the files - I append a build version tag, for caching, and had to have that removed in local tests.