From 64843b88853210314677ab1b434729513ce615a7 Mon Sep 17 00:00:00 2001
From: robrobrobrob <34566744+robrobrobrob@users.noreply.github.com>
Date: Mon, 19 Sep 2022 00:24:34 -0700
Subject: [PATCH] fix: use win64 version of chromium when on arm64 windows
 (#8927)

* fix: use win64 version of chromium when on arm64 windows

no Win_arm available on storage.googleapis.com yet, and it currently defaults to win32

* fix: lint trailing space

* fix: use x64 chromium on Windows 11 for ARM

* fix: detect windows 11 without semver
---
 src/node/BrowserFetcher.ts | 26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/src/node/BrowserFetcher.ts b/src/node/BrowserFetcher.ts
index 2e2fb6419a4..7eeae6ee7d1 100644
--- a/src/node/BrowserFetcher.ts
+++ b/src/node/BrowserFetcher.ts
@@ -237,7 +237,12 @@ export class BrowserFetcher {
           this.#platform = 'linux';
           break;
         case 'win32':
-          this.#platform = os.arch() === 'x64' ? 'win64' : 'win32';
+          this.#platform =
+            os.arch() === 'x64' ||
+            // Windows 11 for ARM supports x64 emulation
+            (os.arch() === 'arm64' && _isWindows11(os.release()))
+              ? 'win64'
+              : 'win32';
           return;
         default:
           assert(false, 'Unsupported platform: ' + platform);
@@ -497,6 +502,25 @@ function parseFolderPath(
   return {product, platform, revision};
 }
 
+/**
+ * Windows 11 is identified by 10.0.22000 or greater
+ * @internal
+ */
+function _isWindows11(version: string): boolean {
+  const parts = version.split('.');
+  if (parts.length > 2) {
+    const major = parseInt(parts[0] as string, 10);
+    const minor = parseInt(parts[1] as string, 10);
+    const patch = parseInt(parts[2] as string, 10);
+    return (
+      major > 10 ||
+      (major === 10 && minor > 0) ||
+      (major === 10 && minor === 0 && patch >= 22000)
+    );
+  }
+  return false;
+}
+
 /**
  * @internal
  */