fix(KAN-58): accept empty unversioned bucket response

native/publish-macos.mjs

@@ -94,7 +94,26 @@ export async function publishMacos({
             ...args,
         ]);
     }
-    const versioning = JSON.parse(s3('get-bucket-versioning', []));
+    const versioningOutput = s3('get-bucket-versioning', [
+        '--output',
+        'json',
+    ]).trim();
+    let versioning;
+    try {
+        // AWS CLI prints nothing for a successful empty VersioningConfiguration.
+        versioning = JSON.parse(versioningOutput || '{}');
+    } catch {
+        throw new Error('Invalid JSON from S3 bucket versioning check.');
+    }
+    if (
+        !versioning ||
+        typeof versioning !== 'object' ||
+        Array.isArray(versioning)
+    ) {
+        throw new Error(
+            'Invalid S3 bucket versioning response: expected an object.',
+        );
+    }
     if (versioning.Status) {
         throw new Error(
             'Use an unversioned release bucket: Hetzner does not support conditional writes on versioned buckets.',