vite-dynamic-proxy

A Vite plugin that enables dynamic proxy configuration at runtime, allowing you to change proxy target using URL query parameters without restarting the development server.

Installation

npm install vite-dynamic-proxy

Usage

Basic Configuration

// vite.config.ts
import { defineConfig } from 'vite'
import { dynamicProxyPlugin } from 'vite-dynamic-proxy'

export default defineConfig({
  plugins: [
    dynamicProxyPlugin({
      // Required: Default target URL for the proxy
      defaultTarget: 'http://localhost:3000',
      
      // Required: Path to proxy (e.g., '/api' or '^/api')
      path: '/api',
      
      // Optional: Change origin header (default: true)
      changeOrigin: true
    })
  ]
})

Configuration Options

Option	Type	Description	Default
defaultTarget	string	Default target URL for the proxy (required)	-
path	string	Path to proxy, can be a simple path or regex starting with ^ (required)	-
changeOrigin	boolean	Changes the origin of the host header	true

Dynamic Proxy Target

You can change the proxy target at runtime by adding a debug query parameter to your URL. The plugin supports both HTTP and HTTPS targets:

# Using HTTP
http://localhost:5173/your-app?debug=localhost:3001

# Using explicit HTTP
http://localhost:5173/your-app?debug=http://localhost:3001

# Using HTTPS
http://localhost:5173/your-app?debug=https://api.example.com

When using HTTPS targets, the plugin automatically sets secure: false to allow self-signed certificates.

Path Matching Examples

// Simple path matching
dynamicProxyPlugin({
  defaultTarget: 'http://localhost:3000',
  path: '/api'  // Will match paths starting with /api
})

// Regex path matching
dynamicProxyPlugin({
  defaultTarget: 'http://localhost:3000',
  path: '^/api'  // Will match paths using regex pattern
})

Development

• npm install - Install dependencies
• npm run build - Build the plugin
• npm run test - Run tests
• npm run test:coverage - Run tests with coverage
• npm run lint - Run ESLint
• npm run typecheck - Run TypeScript type checking

License

ISC