Create a branch from your current production release which will become the Angular 19 version of your application. This will allow you to modify the branch while simultaneously supporting application of hotfixes to your production application during the migration.
Follow the guide below to migrate your branch to Angular 19.
Address any issues in your Angular 19 branch that you discover.
Merge the changes from your Angular 19 branch into the source project.
Navigate to Dependencies in your application.
Check each dependency for reliance on an Angular version. Angular Base Library, Angular Material, Apex Dynamic Components and Auth0 Angular will all be affected, and there may be others such as Design in Context, Camunda or the Monaco Editor Library.
For each such dependency, change the version range to ~19.0.0 and then click the Apply Version Range button.
Generate your application and then test it thoroughly.