Solution

src/index.js

@@ -1 +1,51 @@
 'use strict';
+
+const http = require('http');
+const path = require('path');
+const fs = require('fs');
+const zlib = require('zlib');
+
+function compression() {
+  const server = new http.Server();
+
+  server.on('request', (req, res) => {
+    const url = new URL(req.url, `http://${req.headers.host}`);
+    const fileName = url.pathname.slice(1) || 'index.html';
+    const filePath = path.resolve('public', fileName);
+
+    if (!fs.existsSync(filePath)) {
+      res.statusCode = 404;
+      res.end('File not found');
+
+      return;
+    }
+
+    res.setHeader('Content-Encoding', 'gzip');
+
+    const fileStream = fs.createReadStrem(filePath);
+
+    const gzip = zlib.createGzip();
+
+    fileStream
+      .on('error', () => {})
+      .pipe(gzip)
+      .on('error', () => {})
+      .pipe(res)
+      .on('error', () => {});
+
+    fileStream.on('error', (err) => {
+      res.statusCode = 500;
+      res.end(`Server error: ${err}`);
+    });
+
+    res.on('close', () => fileStream.destroy());
+  });
+
+  server.on('error', () => {});
+
+  server.listen(3005);
+}
+
+module.exports = {
+  compression,
+};