I hadn't tried tern/company-tern before, that worked quite nice :-) I didn't have any problems getting tern to do multi-file completions/navigation though (just

I hadn't tried tern/company-tern before, that worked quite nice :-) I didn't have any problems getting tern to do multi-file completions/navigation though (just had to put "loadEagerly":["assets/js/*.js"] into .tern-project). For refactoring, there's js2-refactor, though I tend not to use auto-refactoring much so don't really know how that fares. Individual test-running ought to be possible in Emacs; you get that in python with nose-tests at least.