feat(release): publish Windows prebuilt artifacts

Author: benvinegar

.github/workflows/ci.yml

@@ -126,6 +126,7 @@ jobs:
         os:
           - ubuntu-latest
           - macos-latest
+          - windows-latest
     steps:
       - name: Check out repository
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2

.github/workflows/release-prebuilt-npm.yml

@@ -36,6 +36,8 @@ jobs:
             runner: ubuntu-24.04-arm
           - package_name: hunkdiff-linux-x64
             runner: ubuntu-latest
+          - package_name: hunkdiff-windows-x64
+            runner: windows-latest
           - package_name: hunkdiff-darwin-x64
             runner: macos-15-intel
           - package_name: hunkdiff-darwin-arm64

CHANGELOG.md

@@ -6,6 +6,8 @@ All notable user-visible changes to Hunk are documented in this file.
 
 ### Added
 
+- Added Windows x64 prebuilt artifact publishing to the release workflow.
+
 ### Changed
 
 ### Fixed

bin/hunk.cjs

@@ -65,6 +65,10 @@ function hostCandidates() {
     if (arch === "x64") return [{ packageName: "hunkdiff-linux-x64", binary }];
   }
 
+  if (platform === "windows") {
+    if (arch === "x64") return [{ packageName: "hunkdiff-windows-x64", binary }];
+  }
+
   return [];
 }
 

scripts/build-prebuilt-artifact.ts

@@ -36,7 +36,11 @@ const repoRoot = path.resolve(import.meta.dir, "..");
 const options = parseArgs(process.argv.slice(2));
 const spec = getHostPlatformPackageSpec();
 const binaryName = binaryFilenameForSpec(spec);
-const compiledBinary = path.join(repoRoot, "dist", "hunk");
+const compiledBinaryCandidates = [
+  path.join(repoRoot, "dist", binaryName),
+  path.join(repoRoot, "dist", "hunk"),
+];
+const compiledBinary = compiledBinaryCandidates.find((candidate) => existsSync(candidate));
 const outputRoot = path.resolve(options.outputRoot ?? releaseArtifactsDir(repoRoot));
 const outputDir = path.join(outputRoot, spec.packageName);
 
@@ -46,8 +50,10 @@ if (options.expectedPackage && options.expectedPackage !== spec.packageName) {
   );
 }
 
-if (!existsSync(compiledBinary)) {
-  throw new Error(`Missing compiled binary at ${compiledBinary}. Run \`bun run build:bin\` first.`);
+if (!compiledBinary) {
+  throw new Error(
+    `Missing compiled binary at ${compiledBinaryCandidates.join(" or ")}. Run \`bun run build:bin\` first.`,
+  );
 }
 
 rmSync(outputDir, { recursive: true, force: true });

scripts/prebuilt-package-helpers.test.ts

@@ -75,6 +75,7 @@ describe("prebuilt package helpers", () => {
     expect(getPlatformPackageSpecForHost("linux", "arm64").packageName).toBe(
       "hunkdiff-linux-arm64",
     );
+    expect(getPlatformPackageSpecForHost("win32", "x64").packageName).toBe("hunkdiff-windows-x64");
   });
 
   test("getHostPlatformPackageSpec resolves the current machine", () => {
@@ -102,6 +103,24 @@ describe("prebuilt package helpers", () => {
     expect(manifest.cpu).toEqual(["x64"]);
   });
 
+  test("buildPlatformPackageManifest maps Windows packages to npm win32", () => {
+    const manifest = buildPlatformPackageManifest(
+      {
+        version: "1.2.3",
+        description: "Desktop diff viewer",
+        license: "MIT",
+      },
+      getPlatformPackageSpecForHost("win32", "x64"),
+    );
+
+    expect(manifest.name).toBe("hunkdiff-windows-x64");
+    expect(manifest.bin).toEqual({
+      hunk: "./bin/hunk.exe",
+    });
+    expect(manifest.os).toEqual(["win32"]);
+    expect(manifest.cpu).toEqual(["x64"]);
+  });
+
   test("sortPlatformPackageSpecs keeps package publish order stable", () => {
     const reversed = [...PLATFORM_PACKAGE_MATRIX].reverse();
     expect(sortPlatformPackageSpecs(reversed).map((spec) => spec.packageName)).toEqual([

scripts/prebuilt-package-helpers.ts

@@ -25,7 +25,7 @@ const ARCH_NAME_MAP: Partial<Record<NodeJS.Architecture, SupportedArch>> = {
   arm64: "arm64",
 };
 
-/** Platforms we actually plan to publish in the first prebuilt-binary rollout. */
+/** Platforms published as optional prebuilt binary packages. */
 export const PLATFORM_PACKAGE_MATRIX: PlatformPackageSpec[] = [
   {
     packageName: "hunkdiff-darwin-arm64",

scripts/smoke-prebuilt-install.ts

@@ -38,6 +38,25 @@ function run(command: string[], options?: { cwd?: string; env?: NodeJS.ProcessEn
   return { stdout, stderr };
 }
 
+/** Resolve a command directory for a sanitized PATH that still works cross-platform. */
+function commandDirectory(command: string) {
+  const proc = Bun.spawnSync(
+    process.platform === "win32" ? ["where", command] : ["bash", "-lc", `command -v ${command}`],
+    {
+      stdin: "ignore",
+      stdout: "pipe",
+      stderr: "pipe",
+      env: process.env,
+    },
+  );
+  const resolved = Buffer.from(proc.stdout).toString("utf8").split(/\r?\n/, 1)[0]?.trim();
+  if (proc.exitCode !== 0 || !resolved) {
+    throw new Error(`Could not resolve ${command} on PATH for the prebuilt install smoke test.`);
+  }
+
+  return path.dirname(resolved);
+}
+
 const repoRoot = path.resolve(import.meta.dir, "..");
 const packageVersion = JSON.parse(await Bun.file(path.join(repoRoot, "package.json")).text())
   .version as string;
@@ -54,28 +73,8 @@ try {
   installDir = mkdtempSync(path.join(tempRoot, "hunk-prebuilt-install-"));
   smokeMetaDir = mkdtempSync(path.join(tempRoot, "hunk-prebuilt-meta-"));
 
-  const nodeBinary = Bun.spawnSync(["bash", "-lc", "command -v node"], {
-    stdin: "ignore",
-    stdout: "pipe",
-    stderr: "pipe",
-    env: process.env,
-  });
-  const resolvedNode = Buffer.from(nodeBinary.stdout).toString("utf8").trim();
-  if (nodeBinary.exitCode !== 0 || resolvedNode.length === 0) {
-    throw new Error("Could not resolve node on PATH for the prebuilt install smoke test.");
-  }
-  const bashBinary = Bun.spawnSync(["bash", "-lc", "command -v bash"], {
-    stdin: "ignore",
-    stdout: "pipe",
-    stderr: "pipe",
-    env: process.env,
-  });
-  const resolvedBash = Buffer.from(bashBinary.stdout).toString("utf8").trim();
-  if (bashBinary.exitCode !== 0 || resolvedBash.length === 0) {
-    throw new Error("Could not resolve bash on PATH for the prebuilt install smoke test.");
-  }
-  const nodeDir = path.dirname(resolvedNode);
-  const bashDir = path.dirname(resolvedBash);
+  const nodeDir = path.dirname(process.execPath);
+  const bashDir = commandDirectory("bash");
 
   run(["npm", "pack", "--pack-destination", packageDir], {
     cwd: path.join(releaseRoot, hostSpec.packageName),
@@ -104,13 +103,18 @@ try {
 
   run(["npm", "install", "-g", "--prefix", installDir, metaTarball]);
 
-  const sanitizedPath = [path.join(installDir, "bin"), nodeDir, bashDir].join(":");
-  const installedHunk = path.join(installDir, "bin", "hunk");
+  const installedBinDir = process.platform === "win32" ? installDir : path.join(installDir, "bin");
+  const installedPackageRoot =
+    process.platform === "win32"
+      ? path.join(installDir, "node_modules", "hunkdiff")
+      : path.join(installDir, "lib", "node_modules", "hunkdiff");
+  const sanitizedPath = [installedBinDir, nodeDir, bashDir].join(path.delimiter);
+  const installedHunk = path.join(
+    installedBinDir,
+    process.platform === "win32" ? "hunk.cmd" : "hunk",
+  );
   const installedPlatformBinary = path.join(
-    installDir,
-    "lib",
-    "node_modules",
-    "hunkdiff",
+    installedPackageRoot,
     "node_modules",
     hostSpec.packageName,
     "bin",
@@ -161,7 +165,7 @@ try {
 
   const bunCheck = Bun.spawnSync(
     [
-      resolvedNode,
+      process.execPath,
       "-e",
       "const {spawnSync}=require('node:child_process'); process.exit(spawnSync('bun',['--version'],{stdio:'ignore'}).status===0?1:0);",
     ],