ReactNative問題:
warning react-native > create-react-class > fbjs > core-js@1.2.7: core-js@<2.6.8 is no longer maintained. Please, upgrade to core-js@3 or at least to actual version of core-js@2
處理:
下載並保存core-js警告消息中請求的模塊版本：
npm install --save core-js@^3
這將更新項目的core-js依賴關系，react-native以使用^3.x.x仍在積極維護的版本