From a1836b06c3f93af50c76dbbd468b4d4f8771ef15 Mon Sep 17 00:00:00 2001
From: David Brailovsky <davidbrai@gmail.com>
Date: Fri, 23 Oct 2026 11:20:01 +0200
Subject: [PATCH] fix: handle npm 12 pack --json output in preview-packages

---
 scripts/preview-packages.mjs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/scripts/preview-packages.mjs b/scripts/preview-packages.mjs
index bf18e9cf4..b979750d3 100644
--- a/scripts/preview-packages.mjs
+++ b/scripts/preview-packages.mjs
@@ -58,7 +58,9 @@ async function pack(argv) {
 				stdio: ["inherit", "pipe", "inherit"],
 				maxBuffer: 64 * 1024 * 1024,
 			});
-			const [info] = JSON.parse(output);
+			// npm 10/11 print an array, npm 12 prints an object keyed by package name.
+			const parsed = JSON.parse(output);
+			const info = Array.isArray(parsed) ? parsed[0] : Object.values(parsed)[0];
 			packed.push({ name: info.name, file: info.filename });
 			console.error(`packed ${info.name}@${info.version} -> ${info.filename}`);
 		} finally {