Node allows use of const (but not let) outside of strict mode but does not seem to respect block scoping

doesnotwork.js

/* 
* In this version without use strict declaration 'SyntaxError: Identifier 'text' has already been declared' is given
*/
const http = require('http');

const hostname = 'localhost';
const port = 2001;

http.createServer((req, res) => {
  if (req.url === '/favicon.ico') {
    return;
  }
  const query = req.url.includes("?") && req.url.split('?')[1].split('=');
  res.writeHead(200, { 'Content-Type': 'text/plain' });
  if (query[1] === 'true') {
    const text = 'Hello World';
    res.end(text);
  }
  else {
    const text = 'Goodbye World';
      res.end(text);
  }
}).listen(port, hostname, () => {
  console.log(`Server running at http://${hostname}:${port}/`);
});

works.js

'use strict';

const http = require('http');

const hostname = 'localhost';
const port = 2001;

http.createServer((req, res) => {
  if (req.url === '/favicon.ico') {
    return;
  }
  const query = req.url.includes("?") && req.url.split('?')[1].split('=');
  res.writeHead(200, { 'Content-Type': 'text/plain' });
  if (query[1] === 'true') {
    const text = 'Hello World';
    res.end(text);
  }
  else {
    const text = 'Goodbye World';
      res.end(text);
  }
}).listen(port, hostname, () => {
  console.log(`Server running at http://${hostname}:${port}/`);
});