url: fix WHATWG host formatting error

The current url.format implementation will return an invalid URL string
without the host if there is a port and unicode: true.

This unexpected behavior is caused by domainToUnicode, which expects
a hostname instead of a host string according to node_url.cc.

Adds both a fix and a test for the issue.

PR-URL: https://github.com/nodejs/node/pull/20493
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Daijiro Wachi <daijiro.wachi@gmail.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/lib/internal/url.js b/lib/internal/url.js
index cff94e6b7d..d9daef1524 100644
--- a/lib/internal/url.js
+++ b/lib/internal/url.js
@@ -400,7 +400,9 @@ Object.defineProperties(URL.prototype, {
           ret += '@';
         }
         ret += options.unicode ?
-          domainToUnicode(this.host) : this.host;
+          domainToUnicode(this.hostname) : this.hostname;
+        if (ctx.port !== null)
+          ret += `:${ctx.port}`;
       } else if (ctx.scheme === 'file:') {
         ret += '//';
       }