React本机(IOS)模块AppRegistry不是已注册的可调用模块(调用runApplication)

import { AppRegistry } from 'react-native';

import { AppRegistry } from 'react-native';
import App from './App'; // 根组件的路径

AppRegistry.registerComponent('MyApp', () => App);

#import <React/RCTRootView.h>
#import <React/RCTBundleURLProvider.h>
#import <React/RCTBridge.h>

// ...

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
  // ...

  RCTBridge *bridge = [[RCTBridge alloc] initWithDelegate:self launchOptions:launchOptions];
  RCTRootView *rootView = [[RCTRootView alloc] initWithBridge:bridge moduleName:@"MyApp" initialProperties:nil];

  // ...

  [self.window makeKeyAndVisible];
  return YES;
}