From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Charles Kerr <charles@charleskerr.com>
Date: Thu, 20 Jul 2023 14:18:19 -0500
Subject: fix: isURL() implementation

Modify Node's lib/internal/url.js isURL() to return the correct value for
URLs created both inside and outside of Node.

The isURL() impl in `main` is Electron-safe but can't be backported in
isolation because it relies on other changes from 18 to main. But we can
safely get there by trying the 18 version first (catching Node URLs),
then the `main` version (catching Electron URLs).

More background w/upstream links at
https://github.com/electron/electron/pull/39154#issuecomment-1644433388

This patch can be removed when we update to Node 20.

diff --git a/lib/internal/url.js b/lib/internal/url.js
index b66a5bbde3e8c419d5385339805cbd94f630986d..228122a38776fe5436f2601efa16b7aa2b440468 100644
--- a/lib/internal/url.js
+++ b/lib/internal/url.js
@@ -618,7 +618,12 @@ ObjectDefineProperties(URLSearchParams.prototype, {
  * @returns {self is URL}
  */
 function isURL(self) {
-  return self != null && ObjectPrototypeHasOwnProperty(self, context);
+  // if it has `context` it is a Node.js URL...
+  if (self != null && ObjectPrototypeHasOwnProperty(self, context))
+    return true;
+
+  // ...but also honor 3rd party URLs e.g. from Electron.
+  return Boolean(self?.href && self.protocol && self.auth === undefined && self.path === undefined);
 }
 
 class URL {
@@ -715,14 +720,10 @@ class URL {
   }
 
   get href() {
-    if (!isURL(this))
-      throw new ERR_INVALID_THIS('URL');
     return this[context].href;
   }
 
   set href(value) {
-    if (!isURL(this))
-      throw new ERR_INVALID_THIS('URL');
     value = `${value}`;
     const href = bindingUrl.update(this[context].href, updateActions.kHref, value);
     if (!href) { throw ERR_INVALID_URL(value); }
diff --git a/test/parallel/test-whatwg-url-invalidthis.js b/test/parallel/test-whatwg-url-invalidthis.js
index 790c28e37c13ed6763cb61b549ab4a983f384717..bddf48b8302632a275d996a53b09343938dc7dc9 100644
--- a/test/parallel/test-whatwg-url-invalidthis.js
+++ b/test/parallel/test-whatwg-url-invalidthis.js
@@ -15,7 +15,6 @@ const assert = require('assert');
 });
 
 [
-  'href',
   'protocol',
   'username',
   'password',
@@ -36,7 +35,6 @@ const assert = require('assert');
 });
 
 [
-  'origin',
   'searchParams',
 ].forEach((i) => {
   assert.throws(() => Reflect.get(URL.prototype, i, {}), {