How to return a `forkJoin` observable when piping the operators

Question

Before I had this resolver that just worked fine:

resolve() {
    return forkJoin(
        this.getData1(),
        this.getData2(),
        this.getData3()
         


        

Answer 1

Use exhaustMap operator. It maps to inner observable, ignore other values until that observable completes

import { forkJoin } from 'rxjs';
import { exhaustMap } from 'rxjs/operators';

resolve() {
    return this.actions$
      .pipe(
        ofActionSuccessful(SomeSctonSuccess),
        exhaustMap(() => {
         return forkJoin(
             this.getData1(),
             this.getData2(),
             this.getData3()
           )
       })

      );
    }