Nitro Has a Free API That Powers Universal Server-Side JavaScript Deployments

Nitro is the server engine behind Nuxt, Analog, and Vinxi. It compiles your server-side code to run anywhere: Node, Deno, Bun, Cloudflare Workers, Vercel, Netlify, AWS Lambda — from one codebase.

Quick Start

npx giget@latest nitro my-app
cd my-app && npm install && npm run dev

API Routes

// routes/api/hello.ts
export default defineEventHandler((event) => {
  return { hello: 'world' }
})

// routes/api/users/[id].ts
export default defineEventHandler((event) => {
  const id = getRouterParam(event, 'id')
  return { userId: id }
})

Deploy Anywhere

# Build for different platforms
NITRO_PRESET=vercel npx nitropack build
NITRO_PRESET=cloudflare npx nitropack build
NITRO_PRESET=netlify npx nitropack build
NITRO_PRESET=node-server npx nitropack build
NITRO_PRESET=deno-server npx nitropack build
NITRO_PRESET=bun npx nitropack build

Same code, different deployment target. Change one env var.

Key Features

• Auto-imports: No import statements needed for utilities
• File-based routing: /routes/api/users.ts -> /api/users
• Storage: Unified storage API (Redis, S3, filesystem)
• Caching: Built-in route caching with defineCachedEventHandler
• WebSocket: Native WebSocket support
• Tasks: Background task scheduling

Caching

export default defineCachedEventHandler(async (event) => {
  const data = await fetchExpensiveData()
  return data
}, { maxAge: 60 * 60 }) // cache for 1 hour

Storage API

export default defineEventHandler(async (event) => {
  // Works with Redis, S3, filesystem — same API
  await useStorage().setItem('key', { value: 42 })
  const data = await useStorage().getItem('key')
  return data
})

The Bottom Line

Nitro is the universal server engine for JavaScript. Write once, deploy to 15+ platforms. If you're building server-side JS and want maximum deployment flexibility, Nitro is the foundation.

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