Here some information I would like to tell you:
. This feature is soon finished and it gives you the capability to debug ternjs en your custom tern plugin with Eclipse IDE. You select the debugger you wish with a tern.java NodeJS preferences, you set a breakpoint in the tern.js file (ex: where completion is executed). You open a JS editor and you do Ctrl+Space and debugger stops to the breakpoint. So now it's very easy to debug ternjs with Eclipse IDE.
* TypeScript Langage Service. I have studied that at first by playing with :
And I find there are a big problem with performance: my Eclipse freezes soon.
and I have several ideas to support TypeScript with tern.java: