Angular 18 to Angular 19 Upgrade

Purpose

Upgrade an Angular application from Angular 18.x to Angular 19.x using a controlled major-hop process.

When to Use

• The project uses Angular 18.x.
• The target next hop is Angular 19.x.
• The Angular 17 -> 18 validation gate passed.
• Angular Material usage is known.
• NgModule and standalone usage is known.
• Router usage is known.
• Effects/signals usage is known.
• Test strategy is known.

When Not to Use