title: How to connect fireplace.vim to browser repl
body: <p>Is it possible to connect vim.fireplace to a browser repl ? I have a setup using austin but if I try to evaluate something inside vim I get:</p>
  
  <pre><code>org.mozilla.javascript.EcmaError: ReferenceError: "setTimeout" is not defined. 
  </code></pre>
  
  <p>which seems to be an indicator that the browser repl is not used.</p>