export default {
 // called when the user attempts to log in
 login: ({ username }) => {
 localStorage.setItem('username', username);
 // accept all username/password combinations
 return Promise.resolve();
 },
 // called when the user clicks on the logout button
 logout: () => {
 localStorage.removeItem('username');
 return Promise.resolve();
 },
 // called when the API returns an error
 checkError: ({ status }) => {
 if (status === 401 || status === 403) {
 localStorage.removeItem('username');
 return Promise.reject();
 }
 return Promise.resolve();
 },
 // called when the user navigates to a new location, to check for authentication
 checkAuth: () => {
 return localStorage.getItem('username')
 ? Promise.resolve()
 : Promise.reject();
 },
 // called when the user navigates to a new location, to check for permissions / roles
 getPermissions: () => Promise.resolve(),
};