supabase/examples/auth/quickstarts/expo-react-native-social-auth/lib/supabase.web.ts

import AsyncStorage from '@react-native-async-storage/async-storage';
import { createClient } from '@supabase/supabase-js';
import 'react-native-url-polyfill/auto';

const isSSR = typeof window === 'undefined';

const ExpoWebSecureStoreAdapter = {
  getItem: (key: string) => {
    if (isSSR) return null;
    console.debug("getItem", { key })
    return AsyncStorage.getItem(key)
  },
  setItem: (key: string, value: string) => {
    if (isSSR) return;
    return AsyncStorage.setItem(key, value)
  },
  removeItem: (key: string) => {
    if (isSSR) return;
    return AsyncStorage.removeItem(key)
  },
};

export const supabase = createClient(
  process.env.EXPO_PUBLIC_SUPABASE_URL ?? '',
  process.env.EXPO_PUBLIC_SUPABASE_ANON_KEY ?? '',
  {
    auth: {
      storage: ExpoWebSecureStoreAdapter,
      autoRefreshToken: true,
      persistSession: true,
      detectSessionInUrl: false,
    },
  },
);