Sending Email Notifications with Firebase Functions with Sendgrid


At this time, Firebase functions don’t natively have the functionality for sending custom emails on their own. Google’s own documentation also suggests one of their own partner platforms like Sendgrid for sending emails. Although you have the option of sending verification emails to your users who sign-up on your Firebase app, the customization there is […]

Building a Horizontally Scrollable Table in React.js & Bootstrap 5

Here’s an example of a horizontally Scrollable table in React.js and Bootstrap. For this example, we will not be using any other third-party library or utility except for Bootstrap 5. Since we are just focused on the table, the data I’m using to show in the table is just a set of random numbers between […]

Building A ReactJS Timer Component with Hooks (useState)

Here’s an easy way to build a timer using ReactJS. For this simple app, we will use useEffect and useState hooks to initialize and store our app state. What this timer does? It’s a simple timer which goes from 0 to ∞. You click the Start button to initiate your counter and it goes on […]

Avoid Fail Fast in Promise.all in JavaScript

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The default behavior of Promise.all in JavaScript is to break the full promise execution chain when one of the promises fails. As you know, Promise.all takes in an array of promises and then returns a promise when all of the promises resolve successfully. OR it returns throws an error whenever one of the promises reject. […]

How to Resolve JavaScript Promises Sequentially (one by one)

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Let’s say you have a set of asynchronous tasks to do. task1() task2() task3() All three tasks do some operation and then return a promise. What these tasks actually do is not really important just now. We can, for now, just assume that they return a Promise at least. We know that if we execute […]

Using a Single onChange Handler for Multiple Inputs in React.js


You will often run into situations where you will need to create lots of useState hooks for managing input states. This particularly happens in the cases where you have a lot of inputs or a multi-step form in ReactJS. It will look something like this. import React, { useState } from “react”; interface AppProps {} const App […]

How to Dockerize the Create React App

Docker is pretty cool. Bundling all your app environment in a single file is just awesome. It saves you a lot of headaches when dealing with dependencies/setup and other environment issues when creating a stable build system for your production app. In this tutorial, we will dockerize a React app built with the famous create-react-app package using […]

Add Cloudflare Worker to a Subdomain on your Website

In this article, we will discuss a simple way for you to map a Cloudflare worker on a subdomain on your website. Let’s say you have a website ( from where you want to call an external API on Ordinarily, you will have to call this API on your backend by setting up a dedicated […]

How to Convert Realtime Database Events to Promises in Firebase


The Realtime Database API in Firebase is based on callbacks. This could be fine for you if you are maintaining a codebase which is a few years old. But, if you prefer a Promise, or better yet async await approach, you will be down for a little disappointment. A typical function that you write for retrieving data from […]

Retrying Failed HTTP Requests in Node.js


Relying on 3rd party services to handle some part of your business logic is a common practice. You might use SendGrid to send emails, Google Cloud Bucket Storage API to store some binary blob or Twilio for sending SMS to your users. Although, the three I mentioned above are quite reliable, you might find yourself […]