title: Upgrade angular 4 to 7 http to httpclient
body: <p>Currently, I am upgrading my Angular project4 using webpack to Angular7. <br>
  I stuck in one step <br></p>
  <blockquote>
  <p>Switch from <strong><code>HttpModule</code></strong> and the <strong><code>Http</code></strong> service to <strong><code>HttpClientModule</code></strong> and
  the <strong><code>HttpClient</code></strong> service. <strong><code>HttpClient</code></strong> simplifies the default ergonomics
  (You don't need to map to json anymore) and now supports typed return
  values and interceptors.</p>
  </blockquote>
  <p>About this step I need to replace <br></p>
  <ul>
  <li><strong><code>HttpModule</code></strong> =&gt; <strong><code>HttpClientModule</code></strong> <br></li>
  <li><strong><code>Http</code></strong> =&gt; <strong><code>HttpClient</code></strong> <br> <br>
  For updating from <strong><code>Http</code></strong> =&gt; <strong><code>HttpClient</code></strong>, are there any script to help like <br><code>$rxjs-5-to-6-migrate -p src/tsconfig.app.json</code> or we need to edit manually?</li>
  </ul>