url: make urlToOptions() handle IPv6 literals

Strip the enclosing square brackets from the parsed hostname.

PR-URL: #19720
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Ruben Bridgewater <[email protected]>

Author: lpinca

lib/internal/url.js

@@ -1314,7 +1314,9 @@ function domainToUnicode(domain) {
 function urlToOptions(url) {
   var options = {
     protocol: url.protocol,
-    hostname: url.hostname,
+    hostname: url.hostname.startsWith('[') ?
+      url.hostname.slice(1, -1) :
+      url.hostname,
     hash: url.hash,
     search: url.search,
     pathname: url.pathname,

test/parallel/test-whatwg-url-properties.js

@@ -143,6 +143,9 @@ assert.strictEqual(url.searchParams, oldParams);
   assert.strictEqual(opts.pathname, '/aaa/zzz');
   assert.strictEqual(opts.search, '?l=24');
   assert.strictEqual(opts.hash, '#test');
+
+  const { hostname } = urlToOptions(new URL('http://[::1]:21'));
+  assert.strictEqual(hostname, '::1');
 }
 
 // Test special origins