title: lerna link vs. lerna bootstrap
body: <p>I have a Lerna project which until recently was using <code>lerna bootstrap --hoist</code>. This worked well but I found the <code>devDependencies</code> in the many sub folders were mostly identical. Upgrading to Lerna v3 I read about <code>lerna link convert.</code> </p>
  
  <p>Does lerna link convert simply move all the sub folder <code>devDependencies</code> into root, and sub folders scan the parent <code>node_modules</code> to load them (a feature of NPM)? I've noticed dependencies within the sub-folders are changed to "file://" instead of the private npm store which indicates once published and consumed they wouldn't be loaded. </p>
  
  <p>Also if <code>lerna bootstrap</code> is dropped then <code>dependencies</code> within the sub modules aren't installed. What method is used to resolve this?</p>