What is the purpose of package.json?

Answer:

All npm packages contain a json file which is located at the root of the project. This json file is the package.json .It that holds various metadata (e.g. project description,project dependencies, project version,license information etc. ) relevant to the project. It allows npm to identify the project as well as handle the project's dependencies. A sample package.json may look as under

{

  "name": "EmployeeCRUDUsingMERN",

  "version": "1.0.0",

  "description": "A example of Package.json",

  "main": "index.js",

  "scripts": {

    "test": "echo \"Error: no test specified\" && exit 1"

  },

  "author": "RNA Team",

  "license": "ISC",

  "dependencies": {

    "browserify": "^12.0.1",

    "express": "^4.13.3",

    "guid": "0.0.12",

    "gulp": "^3.9.0",

    "react": "^0.14.5",

    "react-dom": "^0.14.5",

    "reactify": "^1.1.1",

    "vinyl-source-stream": "^1.1.0"

  }

}