Error building angular+ngrx 8 for production when using createReducer function
You need to wrap your reducer as function call like this:
const yourReducer = createReducer( initialState, on(RequestsActions.loadRequestsSuccess, (state, { requests }) => adapter.addAll(requests, {...state, loading: false})), on(RequestsActions.loadRequestsFailed, (state, { error }) => ({...state, error, loading: false})), on(RequestsActions.deleteRequestSuccess, (state, { id }) => adapter.removeOne(id, state)));export function reducer(state: State | undefined, action: Action) { return yourReducer(state, action);}See the official doc -
https://ngrx.io/guide/store/reducers#creating-the-reducer-function