title: npm development web server restart
body: <p>i'm learning react using a video course. in the videos, the instructor does an <code>npm start</code> and every change he makes to the codebase after that is reflected immediately on the <code>localhost:3000</code>. However, each time I make a change, I have to kill the webserver and then restart it to see the changes. Why is this happening? I have the latest version of stable node and both the instructor and myself are on OSX. I've since googled about the problem and several npm packages are available to address this issue, however, is it possible that on the instructor's this happens out of the box? please help i'd like to continue to learn react.</p>