Observable<Any> transformation to Observable<Bar[]>

Question

I'm pretty new to angular, I'm trying to transform result of an Observable any to Observable<Bar[]> but I have an error: Type Bar is not assignable to type 'ObservableInput any

find(id: string): Observable<Bar[]> {
    return this.findFoo(id)
        .pipe(
          map(data => data.result.entities)
          switchMap((data) => {
            let bar: Bar = {
              id: data.field,
              entity: data
            };
            return bar;
          })
        );
}

Any idea how to do ?

Answer 1

Do it like so to be Typescript compliant 👌🏼:

find(id: string): Observable<Array<Bar>> {
    return this.findFoo(id)
        .pipe(
          map((response: Array<any>) => {
            return response.result.entities.map((entity: any) => {
              return {
                id: entity.field,
                entity: entity
              } as Bar
            }
          }
        );
}

By the way, why does the find method return (Array of) any? Couldn't this be type safe as well?