import simpleRestProvider from 'ra-data-simple-rest'; import { fetchUtils } from 'react-admin'; const httpClient = (url: string, options: any = {}) => { if (!options.headers) { options.headers = new Headers({ Accept: 'application/json' }); } const persistedUser = localStorage.getItem('user'); const user = persistedUser ? JSON.parse(persistedUser) : null; if (user) { options.headers.set('Authorization', `Bearer ${user.id}`); } return fetchUtils.fetchJson(url, options); }; export const dataProvider = simpleRestProvider( 'http://localhost:3000', httpClient, );