Angular 19: 'imports' is only valid on a component that is standalone

I updated my Angular 18 applications (with standalone components standalone: true) to Angular 19 using ng update:

❯ Updates non-standalone Directives, Component and Pipes to 'standalone:false'
and removes 'standalone:true' from those who are standalone.


So far so good, all standalone: true are removed.

However, Visual Studio Code is now issuing following error for imports: [RouterLink, ...]:

'imports' is only valid on a component that is standalone.


What did I miss?

I followed this guide:

• https://angular.dev/update-guide?v=18.0-19.0

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