npm install对本地工程文件造成了哪些修改

{
  "name": "template",
  "version": "1.0.0",
  "description": "## Getting Started",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "node-datetime": "^2.1.2",
    "rotating-file-stream": "^1.4.0",
    "socket.io": "^2.2.0"
  }
}