React-Native 常见报错

1.升级到Xcode10，运行react-native run-ios报错 Could not find iPhone X simulator

提示运行react-native run-ios --verbose命令找到报错文件

node_modules/@react-native-community/cli/build/commands/runIOS/findMatchingSimulator.js修改该文件下的

if (
   simulator.availability !== '(available)' &&
   simulator.isAvailable !== 'YES'
 ) {
  continue;
}

将'YES'改为true即可

if (
   simulator.availability !== '(available)' &&
   simulator.isAvailable !== true
 ) {
  continue;
}