【node】-- express 热部署，修改不重新启动

安装 node-dev 插件

cnpm install -g node-dev

修改packge.json

{
  "name": "serve",
  "version": "0.0.0",
  "private": true,
  "scripts": {
    "start": "nodemon ./bin/www",
    **"dev": "node-dev ./bin/www"**
  },
  "dependencies": {
    "cookie-parser": "~1.4.4",
    "debug": "~2.6.9",
    "express": "~4.16.1",
    "morgan": "~1.9.1"
  }
}

执行 npm run dev