Node.js Backend

A reference implementation using Express 5, running on port 3001.

Quick Start

cd server/node
pnpm install
pnpm dev

Server runs at http://localhost:3001.

Framework

• Runtime: Node.js >=18
• Framework: Express 5
• Port: 3001 (override with PORT)

Endpoints

Implements the shared API endpoints:

• GET /api/captcha — generate captcha image
• POST /api/captcha/verify — verify captcha
• GET /api/health — health check
• GET /api/info — server info
• GET/POST/DELETE /api/security/* — IP blacklist management

Environment Variables

See the shared environment variables. Node.js defaults: PORT=3001, HOST=localhost.

TIP

This is a reference implementation, not a published package. Copy the code you need into your own Express project.