ReactNative MAC环境 babel-preset-r

报错
![bundling failed: "TransformError: /Users/eduardo/Desktop/RNTest/index.ios.js: Unexpected token ) (While processing preset: "/Users/eduardo/Desktop/RNTest/node_modules/babel-preset-react-native/index.js")"

1.终端执行命令行
yarn remove babel-preset-react-native
yarn add babel-preset-react-native@2.1.0

或

npm uninstall babel-preset-react-native
npm install babel-preset-react-native@2.1.0

2.重启终端和模拟器。