Enterprise UI/UX Modernization Prototype

Legacy Component Catalog Modernized from Vanilla HTML/CSS/JS to React + TypeScript + Tailwind CSS

Live demos → Landing Page · Legacy Reference Implementation · Modern Component Architecture (Todo deploy)

Style Modernization Prototype (See Video): https://www.loom.com/share/d6ac73fae37d4976bc9cee5ef1f64f34

Replace # links above with your Render deployment URLs after deploying.

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What This Is

This project demonstrates a real-world modernization of a legacy enterprise UI system into a scalable, component-driven frontend architecture.

It showcases how outdated HTML/CSS/JavaScript patterns can be transformed into a modern React + TypeScript + Tailwind CSS application using reusable components, accessibility-first design, responsive layouts, and maintainable frontend architecture.

The goal is not visual redesign alone, but engineering modernization: improving scalability, developer velocity, accessibility compliance, and long-term maintainability.

This project provides a side-by-side comparison of the same component catalog built two ways:

	Legacy Reference Implementation	Modern Component Architecture
Stack	Vanilla HTML/CSS/JS	React 18 + TypeScript + Tailwind CSS
Layout	Nested <table> elements	CSS Grid + Flexbox
Styles	Inline attributes, deprecated <font> tags	Tailwind utility classes
JavaScript	Global functions, alert(), no types	React hooks, typed components
Routing	Full page reloads	SPA with React Router
Responsive	No	Yes
Build	None (plain files)	Vite build

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Business Impact

• Reduced frontend development effort through reusable component architecture
• Standardized design patterns across the platform
• Improved accessibility compliance with WCAG 2.2 AAA and Section 508 principles
• Enabled scalable UI modernization without full platform rewrites
• Reduced long-term maintenance cost and technical debt
• Improved developer onboarding through shared design system patterns

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Accessibility

This prototype was designed with accessibility-first principles aligned to:

• WCAG 2.2 AAA
• Section 508 compliance
• Semantic HTML patterns
• Keyboard accessibility
• Scalable typography and spacing systems
• High-contrast design tokens

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Repository Structure

uiux-modernization-demo/
├── index.html              # Landing page / case study overview
├── landing.css             # Landing page styles
├── legacy-app/             # Legacy Reference Implementation
│   ├── index.html
│   ├── customers.html
│   ├── orders.html
│   ├── reports.html
│   ├── settings.html
│   ├── style.css
│   └── app.js
└── modern-app/             # Modern Component Architecture
    ├── src/
    │   ├── App.tsx
    │   ├── components/
    │   └── pages/
    ├── package.json
    ├── vite.config.ts
    ├── tailwind.config.js
    └── tsconfig.json

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Local Setup

Prerequisites

• Node.js 18+ for the modern app
• Any modern browser for the legacy app and landing page

1. Clone the repo

git clone https://github.com/RocketDelivery2/uiux-modernization-demo.git
cd uiux-modernization-demo

2. Run the landing page

Open index.html directly in your browser.

3. Run the legacy reference implementation

Open legacy-app/index.html directly in your browser.

4. Run the modern component architecture

cd modern-app
npm install
npm run dev

Development server:

http://localhost:5173

To preview the production build:

npm run build
npm run preview

Preview server:

http://localhost:4173

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Deployment on Render

See RENDER_DEPLOYMENT.md for full step-by-step instructions.

A render.yaml at the repo root defines both services for Render's infrastructure-as-code support.

Recommended deployment order: deploy the Modern App service first, note the live URL, update index.html, then deploy the Root + Legacy service.

Quick summary:

Service	Type	Root Dir	Build Command	Publish Dir
Landing + Legacy	Static Site	.	(none)	.
Modern App	Static Site	modern-app	npm install && npm run build	dist

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Tech Stack

Modern App

• React 18 — component model and hooks
• TypeScript 5 — strict typing
• Vite 8 — fast builds and HMR
• Tailwind CSS 3 — utility-first styling
• React Router 6 — client-side routing

Legacy Reference Implementation

• Legacy HTML/CSS/JavaScript patterns
• Table-based layout structures
• Inline styling and deprecated markup patterns
• Global JavaScript functions

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Recommended GitHub Topics

react typescript frontend tailwind vite design-system component-library ui-modernization accessibility wcag section-508 enterprise-ui frontend-architecture design-tokens legacy-modernization modernization

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Security

See SECURITY.md for the vulnerability disclosure policy.

This is a portfolio/demo project. The legacy app intentionally preserves outdated code patterns for demonstration purposes — these are not security vulnerabilities, they are intentional examples of what gets replaced during modernization.

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Contributing

See CONTRIBUTING.md. This is primarily a personal portfolio project, but feedback and suggestions are welcome via issues.

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License

MIT