challenge 52 big signal performance

[tomalaforge]

No description provided.

[jdegand]

For this challenge, you can imagine a large-scale application where you use a service to save and retrieve your user state at any time within the application.

The problem is that updating a single user property updates the entire application.

I added the `CDFlashingDirective` to visualize when one component is rendering.

## Statement

With signals, you can now be more fine-grained in what the UI is rendering. The goal of this challenge is to understand why everything is re-rendering and to refactor the application to be more performant.

I corrected the typos.

Constraints? Without any, there should be some interesting solutions. It might be possible to solve this challenge by breaking the best practice of always returning a new object inside update. If you mutate the object, change detection should not run.

You can add provideZoneChangeDetection({ eventCoalescing: true }) in app.config to providers array for Angular 18.