When writing unit-tests for JavaScript modules, we often encounter a dilemma wherein the module has some private functions that have not been exported. Testing a function that has been exported is easy since it can be imported in the unit testing framework, and the functionality can be tested. But how...
If you have tried developing your own dropdown, modal, or popover in React, you would have come across this. “How do I detect a click outside my react component so that I can close it?” Detecting click outside component is luckily is not that difficult. This post will use react...
Protocol buffers or Protobuf, is a binary format that was created by Google to serialize structured data that is transferred among services. Before we get into what protocol buffers are, let us first look into JSON. JSON clearly has great advantages when it comes to being a data interchange format...
The latest version of ECMAScript introduced three new logical assignment operators: nullish, AND, and OR operators. These are supported from Firefox 79 onwards, Chrome 85 onwards, and naturally there is no IE support but since Edge is now chromium based, it is available there too. They are not available in...
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...
We all know what we should be doing right now. But we don’t want to! That is procrastination in a nutshell. Everything will be fine. I’ll finish it tomorrow. I still have plenty of time. These are famous lines used by every procrastinator. And even though we do end up...
In this react hooks series, we have already explored the react hooks useState, useEffect, and useReducer. The next react hook we will look into is the useContext hook. As we saw while building our sample application, we had to lift the state up to our root component in order to...
Building upon our React hooks introduction from our previous post on understanding React hooks (useState and useEffect), we will look at the useReducer hook in this post. useReducer hook can be an alternative to useState (in fact, useState uses useReducer internally). Before getting into how to use the useReducer hook,...
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