Plain new project shows Unhandled JS Exception: _typeof3 is not a function

• [v] Review the documentation: https://facebook.github.io/react-native
• [v] Search for existing issues: https://github.com/facebook/react-native/issues
• [v] Use the latest React Native release: https://github.com/facebook/react-native/releases

Environment

React Native Environment Info: System: OS: macOS High Sierra 10.13.2 CPU: x64 Intel® Core™ i7-3720QM CPU @ 2.60GHz Memory: 122.16 MB / 8.00 GB Shell: 3.2.57 - /bin/bash Binaries: Node: 8.12.0 - ~/.nvm/versions/node/v8.12.0/bin/node Yarn: 1.3.2 - /usr/local/bin/yarn npm: 6.4.1 - ~/.nvm/versions/node/v8.12.0/bin/npm Watchman: 4.9.0 - /usr/local/bin/watchman SDKs: iOS SDK: Platforms: iOS 11.4, macOS 10.13, tvOS 11.4, watchOS 4.3 Android SDK: Build Tools: 23.0.1, 25.0.0, 25.0.2, 26.0.1, 26.0.2, 27.0.3 API Levels: 23, 24, 25, 26, 27 IDEs: Android Studio: 2.3 AI-162.4069837 Xcode: 9.4.1/9F2000 - /usr/bin/xcodebuild npmPackages: react: 16.6.0-alpha.8af6728 => 16.6.0-alpha.8af6728 react-native: 0.57.4 => 0.57.4 npmGlobalPackages: react-native-cli: 2.0.1

Description

I followed instruction steps to start a new project with react-native v0.57.4.

With everything installed correctly (I’ve recheck a few times), I create native project with react-native init MyProject. but then I got this error after build iOS project:

Unhandled JS Exception: _typeof3 is not a function (In '_typeof3(typeof Symbol === "function" ? Symbol.iterator : "@@iterator")', '_typeof3' is an instance of Object)

[Val0429]

@harrisrobin I reinstall babels to version 7,

  "devDependencies": {
    "@babel/core": "7.0.0",
    "@babel/plugin-proposal-class-properties": "7.0.0",
    "@babel/plugin-proposal-decorators": "7.0.0",
    "@babel/plugin-proposal-object-rest-spread": "7.0.0",
    "@babel/preset-typescript": "7.0.0",
    "@babel/runtime": "7.0.0",
   }

please let me know if that works for you.

[GuillaumeRZ]

I have the exact same error… Adding previous dependencies does not resolved the issue…