From 8dff09f447f20a7152f11dbf8bd735b93d71ada4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nacho=20Codo=C3=B1er?= <igcogi@gmail.com>
Date: Tue, 27 May 2025 17:25:45 +0200
Subject: [PATCH] fix modern transpiler when disabled

---
 packages/babel-compiler/babel-compiler.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/babel-compiler/babel-compiler.js b/packages/babel-compiler/babel-compiler.js
index bfc45c5758..27a5122bc2 100644
--- a/packages/babel-compiler/babel-compiler.js
+++ b/packages/babel-compiler/babel-compiler.js
@@ -329,7 +329,7 @@ BCp.processOneFileForTarget = function (inputFile, source) {
         const isLegacyWebArch = arch.includes('legacy');
 
         const config = lastModifiedMeteorConfig?.modern?.transpiler;
-        const hasModernTranspiler = lastModifiedMeteorConfig?.modern?.transpiler !== false;
+        const hasModernTranspiler = config != null && config !== false;
         const shouldSkipSwc =
           !hasModernTranspiler ||
           (isAppCode && config?.excludeApp === true) ||