Xcodeをバージョンアップ（10.2.1）したらReactNativeでiosシュミレータが起動なくなった

– by
  • 久しぶりにReactNativeを実行したらシュミレーターが起動しなくなった。

環境

  • react-native : 0.57.3
  • Xcode : 10.2.1

iOSの実行する

react-native run-ios

Found Xcode workspace AwesomeProject.xcworkspace

Could not find iPhone X simulator

Error: Could not find iPhone X simulator
    at Promise.then.udid.udid (/Users/hogeUser/workspace/AwesomeProject/node_modules/react-native/local-cli/runIOS/runIOS.js:149:13)
    at new Promise (<anonymous>)
    at runOnSimulator (/Users/hogeUser/workspace/AwesomeProject/node_modules/react-native/local-cli/runIOS/runIOS.js:134:10)
    at Object.runIOS [as func] (/Users/hogeUser/workspace/AwesomeProject/node_modules/react-native/local-cli/runIOS/runIOS.js:106:12)
    at /Users/hogeUser/workspace/AwesomeProject/node_modules/react-native/local-cli/cliEntry.js:117:22

解決作

https://github.com/facebook/react-native/issues/21498#issuecomment-476621627
https://qiita.com/ryunosuke0922/items/614052bd39c0e05a93bf

/Users/hogeUser/workspace/AwesomeProject/node_modules/react-native/local-cli/runIOS/findMatchingSimulator.js
L.44

修正前

if (!version.startsWith('iOS') && !version.startsWith('tvOS')) {
    continue;
}

修正後

if (!version.startsWith('com.apple.CoreSimulator.SimRuntime.iOS') && !version.startsWith('com.apple.CoreSimulator.SimRuntime.tvOS')) {
      continue;
}
  • なるべく早くreact-nativeのバージョンアップをしよう。