ReactNative升级到0.56以后,装饰器无法使用

解决方案

1. 移除babel-plugin-transform-decorators-legacy
2. npm install --save-dev @babel/plugin-proposal-decorators
3. 配置.babelrc文件

{
    "presets": ["module:metro-react-native-babel-preset"],
    "plugins":[["@babel/plugin-proposal-decorators", { "legacy": true }]]
}