text: export const GET_SONGS = 'GET_SONGS';
  export const ADD_SONG = 'ADD_SONG';
  export const DELETE_SONG = 'DELETE_SONG';
  export const SONGS_LOADING = 'SONGS_LOADING';
  export const USER_LOADING = 'USER_LOADING';
  export const USER_LOADED = 'USER_LOADED';
  export const AUTH_ERROR = 'AUTH_ERROR';
  export const LOGIN_SUCCESS = 'LOGIN_SUCCESS';
  export const LOGIN_FAIL = 'LOGIN_FAIL';
  export const LOGOUT_SUCCESS = 'LOGOUT_SUCCESS';
  export const REGISTER_SUCCESS = 'REGISTER_SUCCESS';
  export const REGISTER_FAIL = 'REGISTER_FAIL';
  export const GET_ERRORS = 'GET_ERRORS';
  export const CLEAR_ERRORS = 'CLEAR_ERRORS';
  