title: readFileSync not reading URL as file
body: <p>Using <a href="https://nodejs.org/api/url.html" rel="nofollow noreferrer">api/url</a> and <a href="https://nodejs.org/api/fs.html#fs_fs_readfilesync_path_options" rel="nofollow noreferrer">fs</a> as in the guide:</p>
  
  <pre><code>const fs = require('fs');
  let myURL = new URL('/ns/oa', 'https://www.w3.org/');
  let contents = fs.readFileSync(myURL).toString();
  console.log(contents)
  </code></pre>
  
  <p>ERROR: ERR_INVALID_URL_SCHEME</p>
  
  <hr>
  
  <p><strong>NOTE</strong>: <a href="https://stackoverflow.com/q/6287297/287948">this question</a> is similar and good clue for readers (!), but it is not a solution to my problem, that was only to use URL as "real URL" (not collapsing the concept to <code>file//</code>).</p>