title: How to force TypeScript to recompile all files even if source unchanged?
body: <p>I've been experimenting with different settings in my <code>tsconfig.json</code>.  As part of this, I want to re-compile all my TypeScript files to see how the emitted JavaScript differs with the new settings (e.g. changing the <code>module</code> option).</p>
  
  <p>The underlying <code>.ts</code> files themselves haven't changed, however, and so calling <code>tsc</code> does nothing.</p>
  
  <p>How can I tell <code>tsc</code> to recreate all the files even though it thinks it doesn't need to?</p>
  
  <p>For reference, I'm invoking the TypeScript compiler like so:</p>
  
  <pre><code>node_modules/typescript/bin/tsc --build src/tsconfig.json
  </code></pre>