From c1e212c1d1abb75c92101ef5535d329e0aee95ca Mon Sep 17 00:00:00 2001
From: Shin'ya Ueoka <ueokande@i-beam.org>
Date: Wed, 6 May 2026 12:26:02 +0900
Subject: [PATCH] fix: drop 32-bit arch support from platform and DownloadURL

Remove I686/x32 from the Arch enum and getArch() since no supported
runner uses 32-bit x86, and 32-bit Linux ARM is not distributed by Firefox.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---
 __test__/DownloadURL.test.ts | 41 ------------------------------------
 src/DownloadURL.ts           |  8 -------
 src/platform.ts              |  3 ---
 3 files changed, 52 deletions(-)

diff --git a/__test__/DownloadURL.test.ts b/__test__/DownloadURL.test.ts
index e464c76..ffb3696 100644
--- a/__test__/DownloadURL.test.ts
+++ b/__test__/DownloadURL.test.ts
@@ -1,15 +1,10 @@
 import { describe, expect, test } from "vitest";
 import { ArchiveDownloadURL, LatestDownloadURL } from "../src/DownloadURL";
-import { UnsupportedPlatformError } from "../src/errors";
 import { Arch, OS } from "../src/platform";
 import { LatestVersion } from "../src/versions";
 
 describe("ArchiveDownloadURL", () => {
   describe.each([
-    [
-      { os: OS.LINUX, arch: Arch.I686 },
-      "https://ftp.mozilla.org/pub/firefox/releases/134.0/linux-i686/en-US/firefox-134.0.tar.bz2",
-    ],
     [
       { os: OS.LINUX, arch: Arch.AMD64 },
       "https://ftp.mozilla.org/pub/firefox/releases/134.0/linux-x86_64/en-US/firefox-134.0.tar.bz2",
@@ -22,10 +17,6 @@ describe("ArchiveDownloadURL", () => {
       { os: OS.MACOS, arch: Arch.AMD64 },
       "https://ftp.mozilla.org/pub/firefox/releases/134.0/mac/en-US/Firefox%20134.0.dmg",
     ],
-    [
-      { os: OS.WINDOWS, arch: Arch.I686 },
-      "https://ftp.mozilla.org/pub/firefox/releases/134.0/win32/en-US/Firefox%20Setup%20134.0.exe",
-    ],
     [
       { os: OS.WINDOWS, arch: Arch.AMD64 },
       "https://ftp.mozilla.org/pub/firefox/releases/134.0/win64/en-US/Firefox%20Setup%20134.0.exe",
@@ -42,10 +33,6 @@ describe("ArchiveDownloadURL", () => {
   });
 
   describe.each([
-    [
-      { version: "firefox-80.0", os: OS.LINUX, arch: Arch.I686 },
-      "https://ftp.mozilla.org/pub/firefox/releases/80.0/linux-i686/en-US/firefox-80.0.tar.bz2",
-    ],
     [
       { version: "devedition-135.0b1", os: OS.LINUX, arch: Arch.AMD64 },
       "https://ftp.mozilla.org/pub/devedition/releases/135.0b1/linux-x86_64/en-US/firefox-135.0b1.tar.xz",
@@ -60,22 +47,10 @@ describe("ArchiveDownloadURL", () => {
       expect(sut.getURL()).toEqual(expected);
     });
   });
-
-  describe.each([[OS.MACOS, Arch.I686]])("platform %s %s", (os, arch) => {
-    test("throws an error", () => {
-      const sut = new ArchiveDownloadURL("80.0", { os, arch }, "en-US");
-      expect(() => sut.getURL()).toThrowError(UnsupportedPlatformError);
-    });
-  });
 });
 
 describe("LatestDownloadURL", () => {
   describe.each([
-    [
-      LatestVersion.LATEST,
-      { os: OS.LINUX, arch: Arch.I686 },
-      "https://download.mozilla.org/?product=firefox-latest&os=linux&lang=en-US",
-    ],
     [
       LatestVersion.LATEST,
       { os: OS.LINUX, arch: Arch.AMD64 },
@@ -106,11 +81,6 @@ describe("LatestDownloadURL", () => {
       { os: OS.MACOS, arch: Arch.ARM64 },
       "https://download.mozilla.org/?product=firefox-esr-latest&os=osx&lang=en-US",
     ],
-    [
-      LatestVersion.LATEST_ESR,
-      { os: OS.WINDOWS, arch: Arch.I686 },
-      "https://download.mozilla.org/?product=firefox-esr-latest&os=win&lang=en-US",
-    ],
     [
       LatestVersion.LATEST_ESR,
       { os: OS.WINDOWS, arch: Arch.AMD64 },
@@ -127,15 +97,4 @@ describe("LatestDownloadURL", () => {
       expect(sut.getURL()).toEqual(expected);
     });
   });
-
-  describe.each([[OS.MACOS, Arch.I686]])("platform %s %s", (os, arch) => {
-    test("throws an error", () => {
-      const sut = new LatestDownloadURL(
-        LatestVersion.LATEST,
-        { os, arch },
-        "en-US",
-      );
-      expect(() => sut.getURL()).toThrowError(UnsupportedPlatformError);
-    });
-  });
 });
diff --git a/src/DownloadURL.ts b/src/DownloadURL.ts
index 25a762b..4f18973 100644
--- a/src/DownloadURL.ts
+++ b/src/DownloadURL.ts
@@ -48,14 +48,10 @@ export class ArchiveDownloadURL implements DownloadURL {
       return "mac";
     } else if (os === OS.MACOS && arch === Arch.ARM64) {
       return "mac";
-    } else if (os === OS.LINUX && arch === Arch.I686) {
-      return "linux-i686";
     } else if (os === OS.LINUX && arch === Arch.AMD64) {
       return "linux-x86_64";
     } else if (os === OS.LINUX && arch === Arch.ARM64) {
       return "linux-aarch64";
-    } else if (os === OS.WINDOWS && arch === Arch.I686) {
-      return "win32";
     } else if (os === OS.WINDOWS && arch === Arch.AMD64) {
       return "win64";
     } else if (os === OS.WINDOWS && arch === Arch.ARM64) {
@@ -118,14 +114,10 @@ export class LatestDownloadURL implements DownloadURL {
       return "osx";
     } else if (os === OS.MACOS && arch === Arch.ARM64) {
       return "osx";
-    } else if (os === OS.LINUX && arch === Arch.I686) {
-      return "linux";
     } else if (os === OS.LINUX && arch === Arch.AMD64) {
       return "linux64";
     } else if (os === OS.LINUX && arch === Arch.ARM64) {
       return "linux64-aarch64";
-    } else if (os === OS.WINDOWS && arch === Arch.I686) {
-      return "win";
     } else if (os === OS.WINDOWS && arch === Arch.AMD64) {
       return "win64";
     } else if (os === OS.WINDOWS && arch === Arch.ARM64) {
diff --git a/src/platform.ts b/src/platform.ts
index 8f9ad08..4f7c146 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;
 
@@ -39,8 +38,6 @@ export const getArch = (): Arch => {
   switch (arch) {
     case "arm64":
       return Arch.ARM64;
-    case "x32":
-      return Arch.I686;
     case "x64":
       return Arch.AMD64;
   }