App.js

import 'react-native-gesture-handler';
import React from 'react';
import AsyncStorage from '@react-native-community/async-storage';
import SwitchNavigator from './screens/SwitchNavigator';
import {createStore, applyMiddleware} from 'redux';
import {Provider} from 'react-redux';
import rootReducer from './reducers';
import rootSaga from './sagas';
import createSagaMiddleware from 'redux-saga';
import {composeWithDevTools} from 'redux-devtools-extension';
import {NavigationContainer} from '@react-navigation/native';
import {setLoginState} from './reducers/authentication';
import {setCustomText} from 'react-native-global-props';

export default App = () => {
  const sagaMiddleware = createSagaMiddleware();
  const store = createStore(
    rootReducer,
    composeWithDevTools(applyMiddleware(sagaMiddleware)),
  );

  const loadToken = async () => {
    try {
      const user = await AsyncStorage.getItem('authorization');
      if (!user) {
        return; //로그인 상태아니면 아무것도 안하도록
      }
      store.dispatch(setLoginState(true));
    } catch (error) {
      console.log(error);
    }
  };

  sagaMiddleware.run(rootSaga);
  loadToken();

  const customTextProps = {
    style: {
      fontFamily: 'AntDesign',
    },
  };
  setCustomText(customTextProps);

  return (
    <Provider store={store}>
      <NavigationContainer>
        <SwitchNavigator />
      </NavigationContainer>
    </Provider>
  );
};