Commonly Used Commands
npm init
npm install express
npm install -D nodemon # Development Dependency
# Loading another person's project (Download dependencies)
npm install
# Update all the dependencies
npm outdated
npx npm-check-updates -u
npm install
Popular Node Modules
- Express (Make server using node.js)
- nodemon (Auto reload local server)
- request (Access APIs)
- EJS (Embeded JS Templating)
- lodash (Provides functions to work with JS)
- Mongoose (MongoDB ODM)
- Dotenv (Save Secret data like API and Encryption Keys)
- Bcrypt (Used to Salt and Hash passwords)
- validator (Add custom validation to Mongoose)
- express-validator (Middleware for validator package to add validation to form data)
- fs (File System - Inbuild Module)
Creating Modules
//Import the module
const moduleName = require('/module');
//Use module
const module = moduleName();
//Exporting the module
exports = function() {
//Write code here
};
// If multiple functions are present in the module
exports.functionName1 = function() {
//Write code here
};
exports.functionName2 = function() {
//Write code here
};
const moduleName = require('/module');
const module = moduleName.functionName1();