fix: use non-symbols in isURLInstance check

patches/node/.patches

@@ -40,3 +40,4 @@ update_tests_after_increasing_typed_array_size.patch
 darwin_work_around_clock_jumping_back_in_time.patch
 fix_do_not_register_the_esm_loader_in_renderer_processes.patch
 fix_allow_preventing_setpromiserejectcallback.patch
+lib_use_non-symbols_in_isurlinstance_check.patch

patches/node/lib_use_non-symbols_in_isurlinstance_check.patch

@@ -0,0 +1,30 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Shelley Vohr <shelley.vohr@gmail.com>
+Date: Tue, 4 Aug 2020 09:17:06 -0700
+Subject: lib: use non-symbols in isURLInstance check
+
+This slightly changes the conditional used to determine whether or
+not something is a URL instance. Since Node.js adds symbols to the URL
+not specified by the WHATWG, those symbols are not present in other
+implementations (like Blink's) and therefore can cause false negatives.
+
+This fixes that by slightly changing the check to properties present
+in all URL instances as specified in the WHATWG spec.
+
+Upstreamed at: https://github.com/nodejs/node/pull/34622.
+
+diff --git a/lib/internal/url.js b/lib/internal/url.js
+index 78f5b32745a0436337233e8a4b57b89263effad6..ace274501f2c1f6bb06f600abb850e737c988338 100644
+--- a/lib/internal/url.js
++++ b/lib/internal/url.js
+@@ -1394,8 +1394,8 @@ function pathToFileURL(filepath) {
+ }
+
+ function isURLInstance(fileURLOrPath) {
+-  return fileURLOrPath != null && fileURLOrPath[searchParams] &&
+-    fileURLOrPath[searchParams][searchParams];
++  return fileURLOrPath != null && fileURLOrPath['href'] &&
++    fileURLOrPath['origin'];
+ }
+
+ function toPathIfFileURL(fileURLOrPath) {

spec/node-spec.js

@@ -174,6 +174,15 @@ describe('node feature', () => {
       });
     });
 
+    describe('URL handling in the renderer process', () => {
+      it('can successfully handle WHATWG URLs constructed by Blink', () => {
+        const url = new URL('file://' + path.resolve(fixtures, 'pages', 'base-page.html'));
+        expect(() => {
+          fs.createReadStream(url);
+        }).to.not.throw();
+      });
+    });
+
     describe('error thrown in main process node context', () => {
       it('gets emitted as a process uncaughtException event', () => {
         const error = ipcRenderer.sendSync('handle-uncaught-exception', 'hello');