how to debug nashorn typescript

IntelliJ supports debugging javascript code running inside Nashorn, e.g., breakpoints, inspect variables.
However, I am wondering if IntelliJ supports debugging typescript code, i.e.,

1. typescript filewatcher converts *.ts file to *.js file + .js.map file
2. set breakpoints in *.ts file
3. run the generated *.js file in Nashorn

I tried it, and it didn't work. Is it possible with IntelliJ 13.1.2? or JebBrain can support it in future release?

thx a lot