fastify

@photonjs/fastify

Fastify adapter for Photon, enabling universal web applications with the high-performance Fastify framework.

Overview

This adapter provides seamless integration between Photon and Fastify:

• High performance: Leverage Fastify's speed with Photon's universal capabilities
• Universal middleware support: Apply Photon middlewares to Fastify apps
• Multi-runtime deployment: Deploy to Node.js, edge runtimes, and more
• Hot Module Replacement: Full HMR support during development
• TypeScript support: Complete type safety with Fastify and Photon
• Plugin ecosystem: Compatible with Fastify's rich plugin ecosystem

Installation

npm install @photonjs/fastify fastify
# or
pnpm add @photonjs/fastify fastify
# or
yarn add @photonjs/fastify fastify

Usage

Basic Setup

Create a Fastify server with Photon integration:

// src/server.ts
import Fastify from 'fastify'
import { apply, serve } from '@photonjs/fastify'

const app = Fastify({
  logger: true
})

// Your Fastify routes and plugins
app.get('/', async (request, reply) => {
  return { message: 'Hello from Photon + Fastify!' }
})

app.get('/api/users', async (request, reply) => {
  return { users: ['Alice', 'Bob'] }
})

// Apply Photon universal middlewares
apply(app)

// Start the server with Photon
export default serve(app)

Vite Configuration

Configure Photon in your Vite config:

// vite.config.ts
import { photon } from '@photonjs/core/vite'

export default {
  plugins: [
    photon({
      server: './src/server.ts'
    })
  ]
}

With Fastify Plugins

Combine Fastify plugins with Photon universal middlewares:

// src/server.ts
import Fastify from 'fastify'
import { apply, serve } from '@photonjs/fastify'
import awesomeFramework from 'awesome-framework/universal-middleware'

const app = Fastify({
  logger: process.env.NODE_ENV !== 'production'
})

// Register Fastify plugins
await app.register(import('@fastify/cors'), {
  origin: true
})

await app.register(import('@fastify/static'), {
  root: path.join(__dirname, 'public'),
  prefix: '/public/'
})

// Your routes
app.get('/', async (request, reply) => {
  return { message: 'Welcome to my app!' }
})

app.get('/api/health', async (request, reply) => {
  return { status: 'ok', timestamp: new Date().toISOString() }
})

// Apply universal middlewares
apply(app, [
  awesomeFramework,
  // Additional universal middlewares...
])

export default serve(app)

API Reference

Functions

apply(app, additionalMiddlewares?)

Applies Photon universal middlewares to a Fastify application.

Parameters:

• app: FastifyInstance - The Fastify application instance
• additionalMiddlewares?: UniversalMiddleware[] - Optional additional middlewares

Returns: The same Fastify app instance (for chaining)

import { apply } from '@photonjs/fastify'

const app = Fastify()
apply(app) // Applies configured universal middlewares

serve(app, options?)

Starts the Fastify server with Photon integration and HMR support.

Parameters:

• app: FastifyInstance - The Fastify application instance
• options?: ServerOptionsBase - Optional server configuration

Returns: The Fastify app instance

import { serve } from '@photonjs/fastify'

const app = Fastify()
serve(app, {
  port: 3000,
  hostname: 'localhost'
})

Server Options

interface ServerOptionsBase {
  port?: number
  hostname?: string
  onCreate?: (server: Server) => void
}

Exports

• ./apply - Middleware application utilities
  • Development version: ./apply (dev mode)
  • Production version: ./apply (production mode)
• ./serve - Server creation utilities
  • Node.js version: ./serve (node runtime)
  • Universal version: ./serve (other runtimes)

Development

Development Server

Start the development server with HMR:

npm run dev
# or
pnpm dev

The server will automatically restart when you make changes to your code.

Building for Production

Build your application for production:

npm run build
# or
pnpm build

Preview Production Build

Test your production build locally:

npm run preview
# or
pnpm preview

Deployment

Node.js Deployment

The Fastify adapter is optimized for Node.js deployment:

// Your built server will work with standard Node.js hosting
node dist/server/index.js

Docker Deployment

FROM node:18-alpine
WORKDIR /app
COPY package*.json ./
RUN npm ci --only=production
COPY dist ./dist
EXPOSE 3000
CMD ["node", "dist/server/index.js"]

Platform-specific Deployment

The adapter works with various Node.js hosting platforms:

• Railway: Direct deployment with automatic port detection
• Render: Compatible with their Node.js runtime
• DigitalOcean App Platform: Works with their Node.js buildpack
• AWS Lambda: Use with serverless Fastify adapters
• Google Cloud Run: Deploy as containerized Node.js app

Advanced Usage

Custom Fastify Options

Configure Fastify with custom options:

import Fastify from 'fastify'
import { serve } from '@photonjs/fastify'

const app = Fastify({
  logger: {
    level: 'info',
    prettyPrint: process.env.NODE_ENV !== 'production'
  },
  trustProxy: true,
  bodyLimit: 1048576 // 1MB
})

serve(app, {
  onCreate: (server) => {
    console.log('Fastify server created:', server.address())
  }
})

Error Handling

Implement custom error handling:

app.setErrorHandler(async (error, request, reply) => {
  request.log.error(error)
  
  if (error.statusCode >= 500) {
    reply.status(500).send({ error: 'Internal Server Error' })
  } else {
    reply.status(error.statusCode || 400).send({ error: error.message })
  }
})

// Apply Photon middlewares after error handlers
apply(app)

Schema Validation

Use Fastify's built-in schema validation:

const userSchema = {
  type: 'object',
  required: ['name', 'email'],
  properties: {
    name: { type: 'string' },
    email: { type: 'string', format: 'email' }
  }
}

app.post('/api/users', {
  schema: {
    body: userSchema,
    response: {
      201: {
        type: 'object',
        properties: {
          id: { type: 'string' },
          name: { type: 'string' },
          email: { type: 'string' }
        }
      }
    }
  }
}, async (request, reply) => {
  // request.body is automatically validated
  const user = await createUser(request.body)
  reply.status(201).send(user)
})

Examples

See the test applications for complete working examples.

Troubleshooting

Common Issues

Port already in use:

serve(app, { port: process.env.PORT || 3001 })

Plugin registration order: Register Fastify plugins before applying Photon middlewares for best compatibility.

License

MIT