title: how to pass compiler options to mocha
body: <p>I run a mocha command to run my tests </p>
  
  <pre><code>$ ./node_modules/.bin/mocha --compilers coffee:coffee-script -R spec
  </code></pre>
  
  <p>I wish to pass additional options to the coffee-script compiler (--bare to avoid the outer closure that is introduced when compiling .coffee to .js). Is there a way to do this? I tried </p>
  
  <pre><code>$ ./node_modules/.bin/mocha --compilers coffee:coffee-script --bare -R spec
  </code></pre>
  
  <p>but that doesn't look right. It also failed saying that --bare is not a valid option for mocha. </p>
  
  <pre><code>  error: unknown option `--bare'
  </code></pre>