title: Typescript unable to import fileReader
body: <p>How do i import FileReader in typescript. I tried this:</p>
  
  <pre><code>var reader:FileReader = new FileReader();
  </code></pre>
  
  <p>my tsconfig.json</p>
  
  <pre><code>{
  "compilerOptions": {
      "module": "commonjs",
      "target": "es6",
      "outDir": "out",
      "lib": [
          "es6"
      ],
      "sourceMap": true,
      "rootDir": "."
  },
  "exclude": [
      "node_modules",
      ".vscode-test"
  ]
  }
  </code></pre>
  
  <p>My error is cannot find name 'FileReader' I am unable to do this too:</p>
  
  <pre><code>import FileReader;
  </code></pre>