Přečtení index.html ze souboru

index.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <h1>Hello, World!</h1>
  </body>
</html>

index.js

import http from 'http'
import chalk from 'chalk'
import fs from 'fs/promises'

const port = 3000

const server = http.createServer(async (req, res) => {
  try {
    const data = await fs.readFile('index.html')

    res.statusCode = 200 // OK
    res.write(data)
  } catch (e) {
    res.statusCode = 500 // Internal Server Error
    res.write(e.message)
  } finally {
    res.end()
  }
})

server.listen(port, () => {
  console.log(chalk.green(`Server listening at <http://localhost>:${port}`))
})