Steps to set up the Application and Installing Required Modules

Step 1: First, we need to initialize our application with a package.json file. Therefore, write the following command in the terminal:  

npm init

Step 2: After the package.json is created, it’s time to install our dependencies. Therefore, Install the required dependencies by the following command: 

npm install body-parser cookie-parser express csurf --save

Here,

• Cookie-parser is used to parse the incoming cookies. 
• Body-parser is used to parse the incoming form data that we will be creating in an HTML file.

Updated dependencies in the package.json file.

"dependencies": {
      "body-parser": "^1.20.2",
      "cookie-parser": "^1.4.6",
      "csurf": "^1.11.0",
      "express": "^4.18.2"
}

Csurf middleware in Node.js prevents the Cross-Site Request Forgery(CSRF) attack on an application. By using this module, when a browser renders up a page from the server, it sends a randomly generated string as a CSRF token. Therefore, when the POST request is performed, it will send the random CSRF token as a cookie. The token sent will be different for each request since they are generated randomly.