title: Angular 11 - ng serve - Option "sourceMap" is deprecated
body: <p>I updated Angular project from Angular 10 to 11x. Everything works normally, except for one warning on running project using <code>ng serve</code> (without any option in ng serve). The warning is:</p>
  <blockquote>
  <p>Option &quot;sourceMap&quot; is deprecated: Use the &quot;sourceMap&quot; option in the browser builder instead.</p>
  </blockquote>
  <p>The warning is not presented in <code>ng build</code>.</p>
  <p>Here is how browser builder part in <code>angular.json</code> of the project looks like:</p>
  <pre><code>&quot;builder&quot;: &quot;@angular-devkit/build-angular:browser&quot;,
            &quot;options&quot;: {
              &quot;outputPath&quot;: &quot;dist/my-app&quot;,
              &quot;index&quot;: &quot;src/index.html&quot;,
              &quot;sourceMap&quot;: true,
              &quot;main&quot;: &quot;src/main.ts&quot;,
              &quot;polyfills&quot;: &quot;src/polyfills.ts&quot;,
              &quot;tsConfig&quot;: &quot;tsconfig.app.json&quot;,
              &quot;aot&quot;: true,
              &quot;assets&quot;: [
                &quot;src/favicon.ico&quot;,
                &quot;src/assets&quot;
              ],
  </code></pre>
  <p>Something related has changed in Angular 11? How to remove this warning?</p>