1.安裝babel

cnpm i babel-cli babel-preset-env -D

2.安裝nodemon

cnpm i nodemon -D

3.在根目錄下新建檔案.babelrc

{
  "presets":[
    [
      "env",
      {
        "target":{
          "node":"current"
        }
      }
    ]
  ]
}

4.在package.json中的”scripts”物件裡新加上一條配置"dev": "nodemon -w src --exec \"babel-node src/index --presets env\"",

"scripts": {
    "dev": "nodemon -w src --exec \"babel-node src/index --presets env\"",
    "test": "echo \"Error: no test specified\" && exit 1"
  },

5.使用npm run dev命令執行