Minimalist static file server

readme.md

Run npx https://gist.github.com/Dammmien/1c94aebefb7d733e4f6d3cc9c11b978b 8000 in a folder

index.js

#!/usr/bin/env node

const http = require('http');
const url = require('url');
const fs = require('fs');
const path = require('path');
const [ runtime, scriptName, port = 3000, folder = process.cwd() ] = process.argv;

class Server {

  constructor(port) {
    this.httpServer = http.createServer(this.onRequest.bind(this)).listen(port);
    console.log(`Server listening on port ${port} in ${folder}`);
  }

  getContentType(pathname) {
    return {
      '.html': 'text/html',
      '.js': 'text/javascript',
      '.json': 'application/json',
      '.css': 'text/css'
    }[path.parse(pathname).ext] || 'text/plain'
  }

  sendError(res, filePath, message) {
    res.writeHead(404, 'Not Found', {
      'Content-Type': this.getContentType(filePath),
      'Content-Length': Buffer.byteLength(message)
    });

    res.end(message);
  }

  sendFile(filePath, stat, res) {
    res.writeHead(200, 'OK', {
      'Content-Type': this.getContentType(filePath),
      'Content-Length': stat.size
    });

    fs.createReadStream(filePath).pipe(res);
  }

  onRequest(req, res) {
    const filePath = `${folder}${url.parse(req.url).pathname}`;

    try {
      const stat = fs.statSync(filePath);

      if (stat.isDirectory()) return this.checkFile(filePath += 'index.html');

      this.sendFile(filePath, stat, res)
    } catch (err) {
      this.sendError(res, filePath, `No such file or directory: ${filePath}!`);
    }
  }
};

const server = new Server(port);

package.json

{
	"name": "static-file-server",
	"version": "0.0.0",
	"bin": "./index.js"
}