What expression is typescript expecting?

Question

JavaScript

Guys hello everyone. There is such a code

@Effect({dispatch: false})
    authLogout = this.actions$
      .ofType(AuthActions.LOGOUT)
      .pipe (do(() => {
        this.router.navigate(['/']);
      }))

and typyscript writes that "an argument expression was expected" And which one?

Answer 1

The effect should return some kind of action in the pipe. To make the transition in the reducer to the next action. https://github.com/ang5-examples/ngrx-store-effect...
And it seems that routing in the effect is not the best place. There, for example, data is being pumped from external sources, such as api, localstorage, etc. And then this data is merged to be passed to the next action.
https://github.com/ngrx/effects/blob/master/docs/i...
Even if it is not planned to proceed to the next action (dispatch: false). You still need to return (in switchMap) something observable or at least null.
www.wisdomofjim.com/blog/how-to-create-an-ngrx-eff...