Atom and TypeScript, compile multiple modules into one * .js

Question

I have a project with 4 .ts files, and I'm trying to compile them into a single .js file. The problem I ran into is that any save to any file generates a .js compilation of this file (without links to links).

If I add the "out" key in tsconfig.json, nothing compiles, ei no file is output. Any ideas on where I can mess up?

This is my starting point, index.ts

My tsconfig.json

This is how I want it to be output, this is from my eclipse setting, which currently works fine. I would prefer to use Atom.

Edit: this is tsconfig.json with "out".