From f9c42befc6e9db78bd659de3b376c94589b4b75b Mon Sep 17 00:00:00 2001
From: Patrik Oldsberg <poldsberg@gmail.com>
Date: Fri, 9 Oct 2020 10:47:26 +0200
Subject: [PATCH] cli: simplify jest transform ignore regex

---
 packages/cli/config/jest.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/cli/config/jest.js b/packages/cli/config/jest.js
index f69e18190d..b9f709241c 100644
--- a/packages/cli/config/jest.js
+++ b/packages/cli/config/jest.js
@@ -96,7 +96,7 @@ async function getConfig() {
     // Default behaviour is to not apply transforms for node_modules, but we still want
     // to apply the esm-transformer to .esm.js files, since that's what we use in backstage packages.
     transformIgnorePatterns: [
-      `/node_modules/${transformModulePattern}(?:(?!\\.esm).)*\\.(?:js|json)$`,
+      `/node_modules/${transformModulePattern}.*\\.(?:(?<!esm\\.)js|json)$`,
     ],
   };