npm install对本地工程文件造成了哪些修改

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npm install之前：

{
  "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"
  }
}

npm install：

package.json里增加了一个config依赖：

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