Emmanuel John I'm a full-stack software developer, mentor, and writer. I am an open source enthusiast. In my spare time, I enjoy watching sci-fi movies and cheering for Arsenal FC.

Stories by Emmanuel John

How AI Is Changing Debugging With Google Gemini

How AI is changing debugging with Google Gemini

Dev

The Google Gemini AI model has integrated AI-powered features to improve the debugging experience in web development.

Emmanuel John
May 23, 2025 ⋅ 5 min read
10 Node.js 24 features you're probably not using

10 Node.js 24 features you’re probably not using

Dev

The Node.js 24 release included significant updates. Explore 10 features you might not be using yet — but absolutely should be.

Emmanuel John
May 22, 2025 ⋅ 8 min read
How To Build A Secure File Upload System In Astro

How to build a secure file upload system in Astro

Dev

Build a secure file upload system using Astro’s server-side rendering, Cloudinary’s SDKs, and native integration.

Emmanuel John
May 21, 2025 ⋅ 19 min read
react view transitions and activity api tutorial

React View Transitions and Activity API tutorial: Animate an AirBnB clone

Dev

Explore the new React ViewTransition, addTransitionType, and Activity APIs by building an AirBnB clone project.

Emmanuel John
May 9, 2025 ⋅ 8 min read
Authentication And Authorization In Astro

Authentication and authorization in Astro

Dev

Implement secure authentication and role-based authorization in Astro using JWT, SSR, and Astro middleware for protected routes.

Emmanuel John
May 6, 2025 ⋅ 23 min read
Mocking Complex APIs With Mirage JS

Mocking complex APIs with Mirage JS

Dev

Mock complex APIs with JavaScript’s Mirage JS library including JWT authentication, relational data, role-based access control, and more.

Emmanuel John
Apr 4, 2025 ⋅ 10 min read
Build A Custom React Native Turbo Module For Android

Build a custom React Native Turbo Module for Android

Dev

Build a React Native Turbo Module for Android to access device info like model, IP, uptime, and battery status using native mobile APIs.

Emmanuel John
Feb 27, 2025 ⋅ 8 min read

React.memo explained: When to use it (and when not to)

Dev

React.memo prevents unnecessary re-renders and improves performance in React applications. Discover when to use it, when to avoid it, and how it compares to useMemo and useCallback.

Emmanuel John
Feb 26, 2025 ⋅ 9 min read
React useCallback: When And How To Use It For Better Performance

React useCallback: When and how to use it for better performance

Dev

Learn how React’s useCallback hook boosts performance by memoizing functions and preventing unnecessary re-renders with practical examples and best practices.

Emmanuel John
Feb 26, 2025 ⋅ 6 min read
chrome dev tools for API mocking

How to use Chrome DevTools for API mocking

Dev

API Mocking allows frontend developers to simulate the responses and behaviors of a live API, such as error handling, timeouts, and specific status codes in real time. Chrome DevTools Local Overrides make this even easier.

Emmanuel John
Feb 4, 2025 ⋅ 7 min read
Building A Multi-Lingual Web App With Nuxt 3 And Nuxt i18n

Building a multi-lingual web app with Nuxt 3 and Nuxt i18n

Dev

Create a multi-lingual web application using Nuxt 3 and the Nuxt i18n and Nuxt i18n Micro modules.

Emmanuel John
Dec 30, 2024 ⋅ 9 min read
react native's new architecture: sync and async rendering

React Native’s New Architecture: Sync and async rendering

Dev

React Native’s New Architecture offers significant performance advantages. In this article, you’ll explore synchronous and asynchronous rendering in React Native through practical use cases.

Emmanuel John
Dec 24, 2024 ⋅ 8 min read