如何从url中移除端口号，并使用node app添加slug？

const url = require('url');
const path = require('path');

function removePortAndAddSlug(inputUrl) {
  const parsedUrl = new URL(inputUrl);
  
  // Remove port from hostname
  const hostnameWithoutPort = parsedUrl.hostname.replace(/:\d+$/, '');
  
  // Get filename or directory name from path
  const pathname = parsedUrl.pathname;
  const basename = path.basename(pathname);
  
  // Convert basename to slug format
  const slug = basename.toLowerCase().replace(/\s+/g, '-');
  
  // Construct new URL without port and with slug
  const newUrl = `${parsedUrl.protocol}//${hostnameWithoutPort}${pathname}/${slug}`;
  
  return newUrl;
}

// Example usage
const inputUrl = 'http://example.com:8080/path/to/file.html';
const newUrl = removePortAndAddSlug(inputUrl);
console.log(newUrl);