export const ADD_BOOK = 'ADD_BOOK';
export const TITLE_CHANGE = 'TITLE_CHANGE';
export const AUTHOR_CHANGE = 'AUTHOR_CHANGE';

export const ADD_BOOK = 'ADD_BOOK';
export const TITLE_CHANGE = 'TITLE_CHANGE';
export const AUTHOR_CHANGE = 'AUTHOR_CHANGE';
export const FETCH_ALL_BOOKS = 'FETCH_ALL_BOOKS';
export const FETCH_ALL_BOOKS_SUCCESS = 'FETCH_ALL_BOOKS_SUCCESS';

Add constants for fetching books.
Add constants for fetching books.
