DEV Community: Msotafa Mohamed

Stop Writing Clunky if/else Checks: Scalable Access Control (RBAC) in React & Next.js

Msotafa Mohamed — Sun, 11 Oct 2026 17:05:00 +0000

Building enterprise web applications or multi-tenant SaaS dashboards almost always leads to a complex challenge: Role-Based Access Control (RBAC).

As applications grow, embedding raw conditional statements like if (user.role === 'admin') directly inside UI components rapidly creates technical debt. It scatters authorization logic across your codebase, making audits and policy changes a maintenance nightmare.

To solve this, I built Accessly — a lightweight, zero-dependency access-control library built for React and Next.js applications.

Key Architecture Highlights:

Declarative Control: Clean UI components ( / ) to conditionally render elements based on permissions.

Wildcard Matching: Support for granular permissions like reports:* or users:delete without manual mapping.

Explainable Authorization: Built-in .explain() decisions so developers can instantly debug why a user was allowed or denied access during runtime.

Framework Agnostic Foundations: Seamlessly integrates with SSR, Next.js Middleware, and App Router.

https://www.npmjs.com/package/accessly

https://accessly-website.vercel.app/

javascript, #react, #webdev, #opensource, #architecture

How Web Workers & OffscreenCanvas Made Client-Side Image Compression 10x Faster

Msotafa Mohamed — Sun, 11 Oct 2026 07:04:25 +0000

Allowing users to upload uncompressed 15MB smartphone photos directly to your cloud storage destroys bandwidth, increases server costs, and delivers a sluggish User Experience (UX).

Traditional client-side compression libraries execute heavy pixel manipulations on the Main Thread, freezing the DOM and causing noticeable UI lag.

To address this performance bottleneck, I created Compressly — a zero-dependency, micro-sized (<3KB) image compression library that offloads processing away from the main thread.

How It Works Under the Hood:

Web Worker Offloading: Offloads heavy mathematical image transformations to a background Web Worker thread, keeping the main thread running smoothly at 60 FPS.

OffscreenCanvas API: Utilizes hardware-accelerated canvas rendering directly inside worker threads without DOM dependencies.

Smart Formatting: Auto-converts heavy JPEGs/PNGs into optimized WebP formats while preserving EXIF orientations.

Performance Impact:

File Reduction: Converts a 14.2 MB raw smartphone photo down to ~380 KB in under 800ms.

Main Thread Blocking: 0ms (completely asynchronous).


TypeScript

import { compressImage } from 'compressly';

const optimizedFile = await compressImage(file, {
  quality: 0.8,
  maxWidth: 1920,
  convertFormat: 'webp',
});

Offload compression to the client without sacrificing frame rates.

🔗 Try Compressly on npm: npmjs.com/package/compressly

javascript, #react, #webdev, #opensource, #architecture

Eliminating Layout Shifts: Modern Skeleton Loaders and Deferred UI States in React

Msotafa Mohamed — Sun, 11 Oct 2026 07:00:27 +0000

A poor loading experience directly harms user retention. Replacing sudden layout shifts or generic full-screen spinners with subtle, skeleton placeholders improves perceived application performance by up to 40%.

However, implementing skeleton loaders often introduces subtle bugs, such as UI flickering when API responses resolve too fast (e.g., under 100ms).

I built React Loadly to provide a production-ready toolkit for managing complex loading states, skeleton screens, and fluid transitions in React.

Core Features:

Zero-Flicker Hooks: useDeferredLoading delays skeleton displays until an API request exceeds a specified threshold (e.g., 200ms), eliminating jarring UI flashes on fast connections.

Accessible Skeletons: Built-in ARIA support (aria-busy, aria-live) to ensure accessibility for screen readers.

Adaptive Theme Support: Automatic dark/light mode adaptations with customizable pulse and wave animations.

TypeScript

import { Skeleton, useDeferredLoading } from 'react-loadly';

function UserProfile({ isLoading, data }) {
const showSkeleton = useDeferredLoading(isLoading, { delay: 200 });

if (showSkeleton) return ;
return ;
}

Upgrade your application's loading experience effortlessly.

🔗 Explore React Loadly on npm: npmjs.com/package/react-loadly

javascript, #react, #webdev, #opensource, #architecture

Synthesizing Procedural UI Micro-Interactions via the Web Audio API

Msotafa Mohamed — Sun, 11 Oct 2026 06:59:21 +0000

Tactile, auditory feedback significantly elevates web user interactions—think of the subtle "click" of a button, the crisp notification pop, or a success chime on task completion.

However, loading external audio assets (MP3s/WAVs) introduces extra HTTP requests, network latency, and browser autoplay restriction headaches.

I developed Tonely to synthesize UI micro-interaction sound effects procedurally in real-time directly inside the browser using the native Web Audio API—requiring zero external audio files.

Why Procedural Audio?

Zero Asset Overhead: No MP3 downloads, no asset hosting, and zero network latency.

Instantaneous Playback: Synthesized instantly via Web Audio Oscillators for 0ms trigger latency.

Microscopic Footprint: Adds virtually no bundle size to your application.

Global Mute & Pitch Controls: Easily configurable volume and pitch controls to respect user preference settings.

TypeScript

import { tonely } from 'tonely';

// Trigger subtle UI feedback on button click
const handleButtonClick = () => {
tonely.play('pop');
};

// Trigger procedural success chime
const handleFormSubmit = () => {
tonely.play('success');
};

Add tactile polish to your web applications without fetching a single audio file.

🔗 Discover Tonely on npm: npmjs.com/package/tonely

javascript, #react, #webdev, #opensource, #architecture