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As you know in programming world  JavaScript  is becoming quite famous programming language so in this blog we will discuss how we can create fresh project of  NodeJS with TypeScript  in standard way. What is Node JS? It s a cross-platform, open-source, and server-side JavaScript runtime environment that executes JavaScript code outside a web browser. What is TypeScript? TypeScript is an open-source language maintained and developed by Microsoft. It's loved and used by a lot of software developers around the world. If you want to Setup with only Node JS Then here is the Link . Requirements Any server should be installed either Apache or Nginx. NodeJS and NPM should be  installed  in the operating system.  First open your terminal and go to your project directory then run following commands ~ npm init (after hitting this command it will ask some basic questions you can answer it as per your needs) { " name " : " kafka-nodejs-real-time-app " , ...

Rate Limiting is Most Common Practice to Limit The Incoming Request of API's  Rate Limit in Node.js - Education Funda Let's see how we can achieve it easily in Node with Express framework: You need to install rate limit package via ~$ npm i express-rate-limit . import * as RateLimit from 'express-rate-limit' ; const env = process . env . NODE_ENV || 'dev' ; const rateLimitRequest = Number ( process . env . RATE_LIMIT_TIME ) || 15 ; const rateLimitTime = Number ( process . env . RATE_LIMIT_REQUEST ) || 100 ; export default () => { if ( env === 'production' ) { return new RateLimit ({ windowMs: rateLimitTime * 60 * 1000 , // 15 minutes max: rateLimitRequest , // limit each IP to 30 requests per windowMs delayMs: 0 , handler: 'Rate limt exceeded, please try again later some time.' , }); } return new RateLimit ({ windowMs: 5 * 60 * 1000 , // 5 minutes max: 3000 , // ...

Being an back-end developer we generally works with APIs, for storing the APIs mostly developers are using the Postman, So in this blog will discuss how to covert postman collection APIs to swagger APIs documentation. Express Js Project Convert Postman Collection APIs to Swagger Docs Step 1: You should have proper APIs postman collection for your project. Step 2: Install swagger ui in your node project via ~ npm i swagger-ui-express . Step 3: Put below code in your Routes index file OR app.js wherever you maintained your express routes as per your requirements: Here you also need to create 1 json file for storing the details of your APIs docs just like we create swagger-output.json . import express from "express" ; import swaggerUi from "swagger-ui-express" ; const swaggerDocument = JSON . parse ( await readFile ( new URL ( "../../../../swagger-output.json" , import .meta. url )) ); const router = express . Router (); // adding swagger docs...

Deploy Angular Build in Node JS (Express JS) Server Mean Stack - Education Funda Firstly Create Angular Production Ready Build: ~ ng build (run in command line when directory is projectFolder). ~ Compress using Brotli compression the resources using the following command for i in dist/*/*; do brotli $i; done Deployment Check Angular Build: You can get a preview of your application using the ng serve --prod command that starts a local HTTP server such that the application with production files is accessible using http://localhost:4200. This is not safe to use for production usage. For a production usage, you have to deploy all the files from the dist folder in the HTTP server of your choice. Node JS/Express JS Server File Changes: //enabling CORS app . use ( cors ()); app . use ( express . static ( path . resolve ( './public' ))); //api v1 base route set app . use ( '/api/v1' , router ); //angular front site app . use ( express . static ( path . resolve ( './public/a...

Let's See How We Can Merge PDF Buffers in Node JS with "pdf-merger-js" PDF Merger JS - Education Funda For merging pdf buffers we should firstly have the buffers of each pdf and we can run loop than can add each buffer for create one single merge buffer. If You Have HTML Files Which You Want to Convert to PDF Buffer and Create 1 Single Merge PDF const getNoticesPreview = async (req, templateId ) => { const caseIdsArr = req. body . caseIds . split ( "," ); var merger = new mergePdfs (); for ( let i = 0 ; i < caseIdsArr. length ; i ++ ) { let caseId = caseIdsArr[i]; let caseDetails = await caseService. getCase (caseId); let templateDetails = await templateService. getTemplate ( templateId ); let options = { format : 'A4' }; let compiled = ejs. compile (fs. readFileSync ( __dirname + 'public' + templateDetails. templateFile , 'utf8' )...

Standard Way to Manage Validations in Node JS with Node Input Validator Package Node JS - Education Funda As per standard code in node js we should prefer manage validations in separate directory and files it means we can create separate directory such as validations and inside it we can create index.js file which is common file and manage separate validation for each module such as userValidatoin.js, postValidation.js etc. Something like this we can manage directory structure. Let's go deep into code now:- validations/index.js file: const validator = require ( "node-input-validator" ) const ResponseMiddleware = require ( "../middlewares/ResponseMiddleware" ) const fn = require ( '../helpers/functions' ) module . exports = { //common function to send validation response validate : ( v , res , next , req = null ) => { console . log ( "ValidatorsIndex => validate" ) if ( v . check (). then ( function ( ma...

As we all know in our node js project there is one main file which is generally index.js or app.js . so if we put all code related to models file load so that is not an standard way of coding so for solving this problem we can create model directory , inside this directory we can create one index.js file in which we load all the models then call in models/index.js file in our main file.  Node JS Here is our app.js file: "use strict" require ( 'dotenv' ). config (); //for calling process.env.VAR_NAME globally const server = require ( './config/server' ), express = require ( 'express' ), app = express (), port = server . port ; require ( './src/models' ); // all routing app . get ( '/' , ( req , res ) => { res . send ( server . appName ) }) app . use ( '/api' , require ( './src/routes/index' )); //listen server on mentioned port app . listen ( port , "0.0.0.0" , () => { console . log ( ` ...