From bbfea0a7c6db24cecc111e34bc6f1e3e2ee59ea9 Mon Sep 17 00:00:00 2001
From: Shin'ya Ueoka <ueokande@i-beam.org>
Date: Wed, 6 May 2026 13:42:42 +0900
Subject: [PATCH] fix: drop 32-bit architecture support

32-bit architecture (x32/i686) is not a valid return value from
os.arch() in practice. The only GitHub Actions runner with a 32-bit
architecture is Linux ARM, but Microsoft Edge does not distribute
builds for Linux 32-bit ARM. Keeping the mapping was misleading and
could result in a silent lookup failure. Remove the I686 arch constant,
the x32 detection branch in getArch(), and the x86 API mapping so
unsupported architectures now fail fast with a clear error.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---
 src/edge_api.ts | 1 -
 src/platform.ts | 3 ---
 2 files changed, 4 deletions(-)

diff --git a/src/edge_api.ts b/src/edge_api.ts
index a0aa90e..1e2f636 100644
--- a/src/edge_api.ts
+++ b/src/edge_api.ts
@@ -62,7 +62,6 @@ export class EdgeUpdatesProduct {
   };
 
   private static readonly ArchValues = {
-    [Arch.I686]: "x86",
     [Arch.AMD64]: "x64",
     [Arch.ARM64]: "arm64",
   };
diff --git a/src/platform.ts b/src/platform.ts
index f6d54df..decb728 100644
--- a/src/platform.ts
+++ b/src/platform.ts
@@ -15,7 +15,6 @@ export type OS = (typeof OS)[keyof typeof OS];
 
 export const Arch = {
   AMD64: "amd64",
-  I686: "i686",
   ARM64: "arm64",
 } as const;
 
@@ -37,8 +36,6 @@ export const getOS = (): OS => {
 export const getArch = (): Arch => {
   const arch = os.arch();
   switch (arch) {
-    case "x32":
-      return Arch.I686;
     case "x64":
       return Arch.AMD64;
     case "arm64":