title: Typescript compile to single file
body: <p>I'm using TS 1.7 and I'm trying to compile my project to one big file that I will be able to include in my html file.</p>
  
  <p>My project structure looks like this:</p>
  
  <pre><code>-build // Build directory
  -src // source root
  --main.ts // my "Main" file that uses the imports my outer files
  --subDirectories with more ts files.
  -package.json
  -tsconfig.json
  </code></pre>
  
  <p>my tsconfig file is:</p>
  
  <pre><code> {
    "compilerOptions": {
      "module":"amd",
      "target": "ES5",
      "removeComments": true,
      "preserveConstEnums": true,
      "outDir": "./build",
      "outFile":"./build/build.js",
      "sourceRoot": "./src/",
      "rootDir": "./src/",
      "sourceMap": true
    }
  }
  </code></pre>
  
  <p>When I build my project I expect the build.js file to be one big file compiled from my source.
  But ths build.js file is empty and I get all of my files compiled o js files.</p>
  
  <p>Each of my TS files look a bit like this</p>
  
  <pre><code>import {blabla} from "../../bla/blas";
  
  export default class bar implements someThing {
      private variable : string;
  }
  </code></pre>
  
  <p>What am I doing wrong ?</p>