message: docs(upgrade): expand upon change detection implications for downgraded components
  PR Close
diff: @@ -479,6 +479,15 @@ using the `downgradeComponent()` method. The result is an AngularJS
  <code-example path="upgrade-module/src/app/downgrade-static/app.module.ts" region="downgradecomponent" header="app.module.ts">
  </code-example>
  +<div class="alert is-helpful">
  +
  +By default, Angular change detection will also run on the component for every
  +AngularJS `$digest` cycle. If you wish to only have change detection run when
  +the inputs change, you can set `propagateDigest` to `false` when calling
  +`downgradeComponent()`.
  +
  +</div>
  +
  Because `HeroDetailComponent` is an Angular component, you must also add it to the
  `declarations` in the `AppModule`.
  