title: How do you prevent jest.config.d.ts from being generated?
body: <p>Similar to <a href="https://stackoverflow.com/questions/58461649/how-to-exclude-specific-files-in-typescript-only-for-the-build">How to exclude specific files in typescript only for the build?</a></p>
  <p>I am using bob to create a react-native library recently I converted jest.config.js to jest.config.ts to get some type safety.</p>
  <p>But now I get</p>
  <pre><code>lib/
    typescript/
      src/
        ...myfiles...
      jest.config.d.ts
      jest.config.d.ts.map
  </code></pre>
  <p>The problem is that the result makes it so that Visual Studio code can no longer find the types.</p>