NgRX effects - Type 'Observable' is not assignable to type 'Observable'

Question

While working with NgRX 8 my colleagues and me are frequently facing a weird error message when implementing the effects.

Type \'Observable

Answer 1

Actually you need to treat actions created by createAction as a function and call it to return the action object. Check this desc. So your of(addCommentFailed) should be of(addCommentFailed()).