JavaScript

How to groupby using reduce in JavaScript

How to groupby using reduce in JavaScript

  • October 1, 2020

The groupBy method is one of the reasons people use lodash in their project. In this blog post, we will write our own version of groupBy using reduce and vanilla JavaScript. What groupBy does? groupBy works on an array of items, and it groups these items together into an object...

JavaScript Promise combinators: race, all, allSettled, any

JavaScript Promise combinators: race, all, allSettled, any

  • December 3, 2019

Promises have not been a new concept in the javascript community. They have existed in the ecosystem for a long time. JavaScript promises existed even before they were officially made a part of the ECMAScript spec in ES6. These initial implementations of JavaScript promise were in the form of framework...

How to import/export ES6 modules in Node

How to import/export ES6 modules in Node

  • June 19, 2018

If you have been following the javascript ecosystem for a while, you already know that even though ES6 modules are a thing, you still cannot import/export ES6 modules in node.js as of today. Node 10 experimental flag for importing/exporting ES6 modules in Node Though Node 10 has added an experimental...

Using Prettier to format your JavaScript code

Using Prettier to format your JavaScript code

  • February 15, 2018

If you have been programming for a while, you would be familiar with the hassles of writing clean code and maintaining consistency across a project on some specific code style guidelines. Even if you spend a few days making everything consistent, some other developer might check-in their changes or disable some...

Running specific test cases in Jasmine or Mocha

Running specific test cases in Jasmine or Mocha

  • November 20, 2017

I recently was working on writing end-to-end test cases using protractor on a project. Everything was working fine until the number of test cases increased significantly, and running the complete set of test cases took too much time. It was a pain to even think of running the e2e command...

Using Babel to import/export ES2015 modules in Node.js

Using Babel to import/export ES2015 modules in Node.js

  • August 15, 2017

Using “require” statements (commonJS syntax) in your server side code while writing “import” and “export” statements (ES2015 syntax) for your front end makes writing javascript a bit weird. The reason for not having import and export statements for modules is that node parses modules a bit differently than how they...

Using Webpack Dev Server

Using Webpack Dev Server

  • July 4, 2017

If you have been doing front-end development recently, the chances are that you would have heard about Webpack multiple times. In fact, most of the starter kits are built using Webpack Dev Server. The implementation and configuration are hidden by wrappers above it so that the developer continues working on...