title: TypeError: Cannot read properties of undefined (reading 'match')
body: <p>I have upgraded my Angular application from 12 to 13 version. And I started getting this error during unit test run.</p>
  <pre><code>Chrome Headless 94.0.4606.61 (Windows 10) AppComponent should create the app FAILED
          TypeError: Cannot read properties of undefined (reading 'match')
              at extractCommentsWithHash (http:###/_karma_webpack_/webpack:/node_modules/@angular/compiler/fesm2020/compiler.mjs:9130:18)
              at ShadowCss.shimCssText (http:###/_karma_webpack_/webpack:/node_modules/@angular/compiler/fesm2020/compiler.mjs:8694:34)
              at map (http:###/_karma_webpack_/webpack:/node_modules/@angular/compiler/fesm2020/compiler.mjs:22402:26)
              at Array.map (&lt;anonymous&gt;)
              at compileStyles (http:###/_karma_webpack_/webpack:/node_modules/@angular/compiler/fesm2020/compiler.mjs:22401:19)
              at compileComponentFromMetadata (http:###/_karma_webpack_/webpack:/node_modules/@angular/compiler/fesm2020/compiler.mjs:21948:13)
              at CompilerFacadeImpl.compileComponentFromMeta (http:###/_karma_webpack_/webpack:/node_modules/@angular/compiler/fesm2020/compiler.mjs:22570:21)
              at CompilerFacadeImpl.compileComponent (http:###/_karma_webpack_/webpack:/node_modules/@angular/compiler/fesm2020/compiler.mjs:22560:21)
              at Function.get (http:###/_karma_webpack_/webpack:/node_modules/@angular/core/fesm2020/core.mjs:24583:47)
              at getComponentDef (http:###/_karma_webpack_/webpack:/node_modules/@angular/core/fesm2020/core.mjs:1119:16)
          Failed: Cannot read properties of undefined (reading 'match')
  </code></pre>
  <p>I tried this solution but it didn't work.</p>
  <pre><code>manually remove package-lock.json
  manually remove folder node_modules
  npm install
  </code></pre>
  <p>Do you have any ideas how to fix it? Is it connected to Angular version upgrade?</p>