title: How to run eslint with parcel.js in dev mode
body: <p>I try to migrate from webpack to parcel to reduce the amount of config needed by a basic react (widget) project.
  Parcel seems to my fulfill needs, however when I run <code>parcel index.html --open</code>, it does not display linter errors.
  How can I display eslint warnings in console while compiling ? Can I make it fail or block the compilation ?</p>
  
  <p>(note : I saw the eslint-watcher package, but it scans the dist folder instead of just src and I'm not sure it integrates well with parcel console output).</p>