Node.js

Error: error:0308010c:digital envelope routines::unsupported occurs when “you are not using the LTS (long-term support) version of Node.js or you are using react-script with a version of less than 5.” Understanding the error If you work with Node.js and command line interface solutions like Webpack, create-react-app, or vue-cli-service, you might have encountered the error, Error: error:0308010c:digital … Read more

The __dirname is not defined in ES module scope error occurs in JavaScript when you “try to access the __dirname global variable in an ES module.” The __dirname and __filename global variables are defined in CommonJS modules but not in ES modules. To fix the “__dirname is not defined in the ES module scope” error … Read more

Error: node sass does not yet support your current environment occurs in Python when “you are compiling a Sass file using the node-sass library”. The main reason is that the version of node-sass you have installed is not compatible with the version of Node.js you are using. To fix the Error: node sass does not yet … Read more

Error the engine node is incompatible with this module occurs when the “package you are trying to install is not compatible with your Node.js engine (version).” To fix the “the engine ‘node’ is incompatible with this module” error, add the –ignore-engines suffix while installing the package like this: yarn install –ignore-engines. yarn install –ignore-engines # OR yarn global … Read more

Error:03000086:digital envelope routines::initialization typically occurs when there is a “problem with initializing the digital envelope routines used in your Node.js application.” How to fix the error:03000086:digital envelope routines::initialization To fix the error:03000086:digital envelope routines::initialization, “uninstall Node.js version 17+ and reinstall Node.js version 16.” Here is the step-by-step guide to fix the error. Step 1: Install Node.js … Read more

Algolia is a search engine API that allows developers to add search functionality to their applications. Algolia search can be implemented in Node.js by installing the algoliasearch package, a client library for communicating with the Algolia API. Here is the step-by-step guide on implementing the algolia search in Node.js. Step 1: Install the algolia package. mkdir … Read more

The self-signed certificate will be enough to establish a secure HTTPS connection, although browsers will complain that the certificate is self-signed and is not trusted. Nevertheless, it is still great for development purposes. You must have installed OpenSSL installed on your machine. If not, on a Mac, you can install it using Brew. Install OpenSSL if … Read more

Here are four ways to update the node version on Mac. Using N: An npm-based node version manager. Using Homebrew: Type this command: brew upgrade node Using NVM: A script-based node version manager. Using MacPorts: MacPorts is the other package manager for Mac. Method 1: Update Node using N N is an npm-based node version … Read more

Here is the step-by-step guide to setting up node express and MongoDB in Docker. Step 1: Install the dependencies. Create a project folder in your leading directory by the following command. mkdir newdock Go into the folder. cd newdock Install the following dependencies. yarn add express mongodb or npm install express mongodb –save I am … Read more

WebSocket is the internet protocol that allows for full-duplex communication between servers and clients. This protocol goes beyond the typical HTTP request/response paradigm; with WebSockets, the server may send data to a client without initiating a request, thus allowing for some exciting applications. Follow the step-by-step guide to create an application with Node.js and Socket.io. … Read more

Here is the step-by-step guide for creating an application that uses React, Node.js, and express server. Step 1: Install React using create react app. npx create-react-app react-express-tutorial After installing, go into that directory. cd react-express-tutorial Start the development server. yarn start Step 2: Define the routing of components. Type the following command in your terminal … Read more

Express.Router() function is “used to create a new router object.” The Router() function is used when you want to create a new router object in your program to handle requests. Syntax express.Router( [options] ) Optional Parameters case-sensitive: This enables case sensitivity. mergeParams: It preserves the req.params values from the parent router. strict: This enables strict … Read more

The process.env is “used to get the user environment.” Syntax process.env Return value This property returns an object containing the user environment. Basics of process.env Accessing environment variables in Node.js is supported out of the box. When your Node.js process boots up, it will automatically provide access to all the existing environment variables by creating … Read more

When the client makes a login request to the server, the server will create a session and store it on the server side. When the server responds to the client, it sends a cookie. This cookie will contain the session’s unique id stored on the server, which will now be stored on the client. This … Read more

To create a form validation in express, use the “express-validator” package. We will create a form and send the POST request to the server, and then if the request fails against the validation, it will respond with an error message. Here is the step-by-step guide to form data validation in Node.js with express-validator. Step 1: … Read more

Follow the step-by-step guide to create a basic HTTP Web Server with Node.js. Step 1: Create a project folder. First, create a folder using the following command. mkdir node-server-tutorial Okay, now go into that folder and open it in your editor; in my case, it is code. Inside the root folder, make one file called server.js. … Read more

To send a post request in the Node.js express framework, use the “express.Router().route().post()” method. The data sent through the POST request is stored in the request object. We use the Express POST method to save the data into the database. So underneath, what happens is that when the user sends a POST request to the server, … Read more

To send an email in Node.js, use the “nodemailer” module. The nodemailer is a module that allows you to send emails easily without hassle. It uses a Simple Mail Transfer Protocol (SMTP) for sending email messages between servers. Most email systems that send mail over the Internet support SMTP-based sending. Here is the step-by-step guide … Read more

To upload and resize an image to the node express server, use the “sharp library”. We will build Web APIs through an express web framework very quickly, and it has tremendous support for the NoSQL databases like MongoDB. Follow these steps to upload and resize the image. Step 1: Create Node Express Project Create a … Read more

There are two versions of reCAPTCHA offered by Google: reCAPTCHA v3 reCAPTCHA v2 We will use reCAPTCHA v2. Here is the step-by-step guide for Google recaptcha in Node.js. Step 1: Create a project and configure it. npm init We are initializing the package.json file. { “name”: “googlerecaptcha”, “version”: “1.0.0”, “description”: “”, “main”: “index.js”, “scripts”: { “start”: “nodemon … Read more