Create Feature 1 - NgRx 13

reducer.ts

  // books.reducer.ts
import { createReducer } from "@ngrx/store";

import * as BookListPageActions from "./book-list-page.actions";
import * as BooksApiActions from "./books-api.actions";

export const featureName = "books";

export interface State {
  books: Book[];
  loading: boolean;
}

const initialState: State = {
  books: [],
  loading: false,
};

export const reducer = createReducer(
  initialState,
  on(BookListPageActions.enter, (state) => ({
    ...state,
    loading: true,
  })),
  on(BooksApiActions.loadBooksSuccess, (state, { books }) => ({
    ...state,
    books,
    loading: false,
  }))
);