title: How to install all typescript definition file based on packages.json?
body: <p>In my project, I have a <code>package.json</code> file, and use <code>npm install</code> to install all <code>dependencies</code>. <br>
  And now, I want auto install all typescript definition file base on package.json.<br>
  How can I do it. <br>
  Thanks.</p>