[Solved] Examine this Effect code:updateUser$ = createEffect(() => this.actions$.pipe( ofType(updateUser), map(() => this.api.... | Angular

Angular - Signals

Examine this Effect code:

updateUser$ = createEffect(() => this.actions$.pipe(
  ofType(updateUser),
  map(() => this.api.updateUser()),
  map(() => updateUserSuccess())
));

What is the issue with this Effect?

AMissing <code>ofType</code> operator to filter actions

BUsing <code>map</code> to call an async API without flattening operator causes incorrect behavior

CEffect is missing <code>{ dispatch: false }</code> option

DUsing <code>tap</code> instead of <code>map</code> for dispatching actions

Step-by-Step Solution

Solution:

Step 1: Identify async call handling
The API call returns an Observable, so map is not suitable to flatten it.
Step 2: Correct operator usage
Operators like switchMap or mergeMap should be used to flatten the inner Observable.
Final Answer:
Using map to call an async API without flattening operator causes incorrect behavior -> Option B
Quick Check:
Async calls require flattening operators [OK]

Quick Trick: Use switchMap or mergeMap for async API calls [OK]

Common Mistakes:

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