Serves files from the current directory and subdirectories over HTTP for local development purposes using multiple workers.

package.json

{
  "name": "dev-http-server",
  "version": "0.0.1",
  "description": "Development HTTP server serving the current duirectory.",
  "license": "MIT",
  "author": "Ferdinand Prantl <prantlf@gmail.com> (http://prantl.tk/)",
  "contributors": [],
  "homepage": "https://gist.github.com/prantlf/2514e4b43b8c6ef6ab08a4d2084a69ba",
  "repository": "https://gist.github.com/prantlf/2514e4b43b8c6ef6ab08a4d2084a69ba",
  "bugs": "https://gist.github.com/prantlf/2514e4b43b8c6ef6ab08a4d2084a69ba",
  "engines": {
    "node": ">=8"
  },
  "dependencies": {
    "cluster": "0.7.7",
    "compression": "1.7.4",
    "connect": "3.7.0",
    "serve-index": "1.9.1",
    "serve-static": "1.14.1"
  },
  "keywords": [
    "http-server",
    "web-server",
    "server",
    "http",
    "development"
  ]
}

server.js

// Serves files from the current directory and subdirectories over HTTP.

const { HOST, PORT, WORKER_COUNT } = process.env
const host = HOST || '0.0.0.0'
const port = PORT || 9001
const workerCount = parseInt(WORKER_COUNT || 2)

const cluster = require('cluster')

if (cluster.isMaster) {
  console.log(`Master ${process.pid} is starting ${workerCount} workers...`)
  for (let i = 0; i < workerCount; ++i) {
    cluster.fork();
  }
  cluster.on('exit', (worker, code, signal) =>
    console.log(`Worker ${worker.process.pid} has exited with the code ${code}.`))
  return
}

const http = require('http')
const connect = require('connect')
const compression = require('compression')
const serveStatic = require('serve-static')
const serveIndex = require('serve-index')

const handler = connect()
  .use(compression())
  .use(serveStatic('.', { etag: false }))
  .use(serveIndex('.'))
http
  .createServer(handler)
  .listen(port, host, error => {
    if (error) {
      console.error(error);
    } else {
      console.log(`Worker ${process.pid} is listening at http://${host}:${port}...`);
    }
  })