custom-mime-type.js

const http = require('http');
const fs = require('fs');
const path = require('path');

const server = http.createServer((req, res) => {
  const filePath = path.join(__dirname, req.url);
  const ext = path.extname(filePath);

  if (ext === '.custom-file-type') {
    fs.readFile(filePath, (err, data) => {
      if (err) {
        res.writeHead(404, { 'Content-Type': 'text/plain' });
        res.end('File not found');
      } else {
        res.writeHead(200, { 'Content-Type': 'custom/filetype' });
        res.end(data);
      }
    });
  } else {
    // Handle other file types or routes
  }
});

server.listen(3000, () => {
  console.log('Server listening on port 3000');
});

const express = require('express');
const fs = require('fs');
const path = require('path');

const app = express();

app.use((req, res, next) => {
  const filePath = path.join(__dirname, req.url);
  const ext = path.extname(filePath);

  if (ext === '.testext') {
    fs.readFile(filePath, (err, data) => {
      if (err) {
        res.status(404).type('text/plain').send('File not found');
      } else {
        res.status(200).type('your-custom-mime-type').send(data);
      }
    });
  } else {
    next();
  }
});

app.listen(3000, () => {
  console.log('Server listening on port 3000');
});