1.快速新建一個專案

npx create-react-app mobx-react

cd mobx-react

yarn eject

報錯的話執行以下操作

git add .

git commit -m "aa"

2.安裝依賴包

yarn add babel-plugin-transform-decorators-legacy @babel/plugin-proposal-decorators mobx mobx-react --save-dev

3.配置package.json

"babel": {
    "plugins":[
      [
        "@babel/plugin-proposal-decorators",
        {
            "legacy":true
        }
      ],
      [
        "@babel/plugin-proposal-class-properties",
        {
            "loose":true
        }
        ]
      ],
    "presets":[
    "react-app"
    ]
  }
 

The End