server.js

#!/usr/bin/env node

process.title = 'epack-site';
const fs = require('node:fs');
const express = require('express');
const app = express();

const port = process.env.PORT || 1534;
const rootDocs = new Set(['README.md', 'ROADMAP.md', 'CODE_OF_CONDUCT.md', 'CONTRIBUTING.md', 'LICENSE.md', 'ARCHITECTURE.md']);

const memoizeLs = {};

app.get('/*', (request, response) => {
  // A directory is trying to be read
  if (request.path.endsWith('/') && request.path !== '/playground/' && request.path !== '/') {
    if (memoizeLs[request.path]) {
      return response.send(memoizeLs[request.path]);
    }
    memoizeLs[request.path] = fs.readdirSync(`.${request.path}`);
    response.send(memoizeLs[request.path]);
  }

  if (request.path === '/index.html') {
    return response.redirect('/');
  }

  if (request.path === '/MONKEYIDE_LICENSE.md') {
    return response.redirect('https://raw.githubusercontent.com/Yash-Singh1/monkeyide/master/LICENSE');
  }

  if (request.path.includes('favicon.ico')) {
    return response.sendStatus(204);
  }

  // Figure out which file to send, sometimes it is different then requested
  let file = request.path.slice(1);
  if (request.path === '/playground/' || request.path === '/') {
    file = 'index.html';
  } else if (request.path.startsWith('/playground/')) {
    file = request.path.slice(12);
  } else if (request.path === '/LICENSE.md') {
    file = 'LICENSE';
  }

  // Determine the root from which to send the file
  let root = rootDocs.has(request.path.slice(1)) || request.path.startsWith('/img/') ? './' : './docs/';
  if (request.path.startsWith('/node_modules/')) {
    root = './';
  } else if (request.path.startsWith('/playground/')) {
    root = './www/';
  }

  // Prevent loads of 404 logs
  if (!fs.existsSync(`${root}${file}`)) {
    return response.sendStatus(404);
  }

  try {
    response.sendFile(file, {root});
  } catch {
    response.sendStatus(404);
  }
});

app.listen(port, () => {
  console.log('done');
  console.log();
  console.log('Listening on :' + port);
});