These days I use web components for component writing and frameworks to handle routing, state management, bundling, and so on.
I migrated from Angular 4 to 18 (including ngrx and material) and didn't find it especially problematic.
Migrating mostly was little effort and consisted of automatic migration and walking through the provided checklist (mostly to ensure I didn't miss anything important), but I don't have any comparison in the JS SPA ecosystem.
> I migrated from Angular 4 to 18 (including ngrx and material) and didn't find it especially problematic.
The pain varies from project to project. Mine has been touched by a generation of developers of different levels of proficiency. A more disciplined project would’ve been easier to migrate in retrospective.
I think Angular ecosystem really missed the train with schematics (even ngrx!). Schematics could tackle a lot of toil if implemented exhaustively but apart from Angular and Material, nobody else seems to implement them effectively for brownfield projects.
Tried React afterwards, this frustration didn't really exist and it was much easier to pick up.
It is apps or pages, which supports what, what new use cases is "use..." now for, ....