Best Practices for Adding a Custom Loader/Spinner in Angular 19 Without Libraries [closed]

I’m working on an Angular 19 project and want to implement a custom loader/spinner for page transitions without using any external libraries.

Here’s what I’m trying to achieve:

• A spinner that appears during navigation and disappears when the transition is complete.
• Integration with Angular’s Router events for toggling visibility.
• Clean, efficient, and maintainable implementation.

I’d like to know:

• The best approach to handle the loader state across components or services.
• How to use Angular’s built-in features, such as Router events, for this functionality.
• Tips for ensuring the loader performs well and doesn’t cause unnecessary flickering or delays.

If possible, please include examples or references to official Angular documentation or related resources.

Thank you in advance for your guidance!

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