Architecting Angular Applications with Redux, RxJS, and NgRx

Additional actions 

The next order of business is to update our products.actions.ts file with the new methods that we need to support the preceding code:

// products.actions.tsimport {  FETCHING_PRODUCTS_SUCCESSFULLY,  FETCHING_PRODUCTS_ERROR,  FETCHING_PRODUCTS,  ADD_PRODUCT,  ADD_PRODUCT_SUCCESSFULLY,  ADD_PRODUCT_ERROR} from "./product.constants";export const fetchProductsSuccessfully = (products) => ({   type: FETCHING_PRODUCTS_SUCCESSFULLY,  payload: products});export const fetchError = (error) => ({   type: FETCHING_PRODUCTS_ERROR,   payload: error });export const fetchProductsLoading = () => ({ type: FETCHING_PRODUCTS });export const fetchProducts = () => ({ type: FETCHING_PRODUCTS });export const addProductSuccessfully (product) => ({  type: ...