esbuild hono-llrt.js --outfile=bundle.mjs --platform=node --target=es2020 --format=esm --bundle

hono-llrt.js

import { createServer } from 'net'
import { Hono } from 'hono'
// import { Hono } from './dist'

const PORT = 3000

/**
 * TODO: Remove globalThis.Response
 * The Response object is normally supported by the runtime.
 * This is a workaround for the issue where `new Response` is not
 * accessible in the global scope as of LLRT 0.1.6-beta.
 */
globalThis.Response = class {
  constructor(body, status = 200, statusText = 'OK', headers = {}) {
    this.body = body
    this.status = status
    this.statusText = statusText
    this.headers = headers
  }

  async text() {
    return this.body
  }
}

const app = new Hono()
app.get('/', (c) => c.text('Hello Hono on LLRT!'))

const server = createServer((socket) => {
  socket.on('error', (error) => {
    console.error('Socket error:', error)
    socket.end()
  })
  socket.on('data', async (data) => {
    try {
      const requestString = data.toString()
      const requestLines = requestString.split('\r\n')
      const requestLine = requestLines[0].split(' ')
      const headers = {}

      for (let i = 1; i < requestLines.length; i++) {
        const line = requestLines[i]
        if (line) {
          const [key, ...valueParts] = line.split(': ')
          headers[key] = valueParts.join(': ')
        }
      }

      const method = requestLine[0]
      const path = requestLine[1]
      const protocol = requestLine[2]
      const url = `http://localhost:${PORT}${path}`
      const request = new Request(url, {
        method,
        path,
        protocol,
        headers,
      })

      console.log('Received request:', request)

      const response = await app.fetch(request)

      console.log('Converted response:', response)

      const body = await response.text()
      let responseHeaders = ''

      for (const [key, value] of Object.entries(response.headers)) {
        responseHeaders += `${key}: ${value}\r\n`
      }

      const httpResponse = `HTTP/1.1 ${response.status} ${response.statusText}\r\n${responseHeaders}\r\n${body}`

      socket.write(httpResponse)
      socket.end()
    } catch (error) {
      console.error('Error handling request:', error)
      socket.write('HTTP/1.1 500 Internal Server Error\r\n\r\n')
      socket.end()
    }
  })
})

server.listen(PORT, () => {
  console.log(`Server listening on http://localhost:${PORT}/`)
})