From d9f3bbb6d41ad972945188e086fddac169752d73 Mon Sep 17 00:00:00 2001
From: Niklas Mischkulnig <4586894+mischnic@users.noreply.github.com>
Date: Thu, 27 Nov 2025 15:22:33 +0100
Subject: [PATCH] Turbopack: keep sideeffectful barrel file

---
 .../reexport-side-effect-barrel/input/index.js               | 5 +++++
 .../reexport-side-effect-barrel/input/library/index.js       | 1 +
 .../reexport-side-effect-barrel/input/library/object.js      | 1 +
 .../reexport-side-effect-barrel/input/library/package.json   | 5 +++++
 .../input/library/registration.js                            | 3 +++
 5 files changed, 15 insertions(+)
 create mode 100644 turbopack/crates/turbopack-tests/tests/execution/turbopack/side-effects-optimization/reexport-side-effect-barrel/input/index.js
 create mode 100644 turbopack/crates/turbopack-tests/tests/execution/turbopack/side-effects-optimization/reexport-side-effect-barrel/input/library/index.js
 create mode 100644 turbopack/crates/turbopack-tests/tests/execution/turbopack/side-effects-optimization/reexport-side-effect-barrel/input/library/object.js
 create mode 100644 turbopack/crates/turbopack-tests/tests/execution/turbopack/side-effects-optimization/reexport-side-effect-barrel/input/library/package.json
 create mode 100644 turbopack/crates/turbopack-tests/tests/execution/turbopack/side-effects-optimization/reexport-side-effect-barrel/input/library/registration.js

diff --git a/turbopack/crates/turbopack-tests/tests/execution/turbopack/side-effects-optimization/reexport-side-effect-barrel/input/index.js b/turbopack/crates/turbopack-tests/tests/execution/turbopack/side-effects-optimization/reexport-side-effect-barrel/input/index.js
new file mode 100644
index 00000000000000..97d392d04334db
--- /dev/null
+++ b/turbopack/crates/turbopack-tests/tests/execution/turbopack/side-effects-optimization/reexport-side-effect-barrel/input/index.js
@@ -0,0 +1,5 @@
+import { ObjectElement } from './library'
+
+it('shoudl not discard side-effectful barrel files', () => {
+  expect(ObjectElement.foo).toBe('side-effect')
+})
diff --git a/turbopack/crates/turbopack-tests/tests/execution/turbopack/side-effects-optimization/reexport-side-effect-barrel/input/library/index.js b/turbopack/crates/turbopack-tests/tests/execution/turbopack/side-effects-optimization/reexport-side-effect-barrel/input/library/index.js
new file mode 100644
index 00000000000000..35b283d499da1a
--- /dev/null
+++ b/turbopack/crates/turbopack-tests/tests/execution/turbopack/side-effects-optimization/reexport-side-effect-barrel/input/library/index.js
@@ -0,0 +1 @@
+export { ObjectElement } from './registration'
diff --git a/turbopack/crates/turbopack-tests/tests/execution/turbopack/side-effects-optimization/reexport-side-effect-barrel/input/library/object.js b/turbopack/crates/turbopack-tests/tests/execution/turbopack/side-effects-optimization/reexport-side-effect-barrel/input/library/object.js
new file mode 100644
index 00000000000000..5a1901241b1eae
--- /dev/null
+++ b/turbopack/crates/turbopack-tests/tests/execution/turbopack/side-effects-optimization/reexport-side-effect-barrel/input/library/object.js
@@ -0,0 +1 @@
+export const ObjectElement = {}
diff --git a/turbopack/crates/turbopack-tests/tests/execution/turbopack/side-effects-optimization/reexport-side-effect-barrel/input/library/package.json b/turbopack/crates/turbopack-tests/tests/execution/turbopack/side-effects-optimization/reexport-side-effect-barrel/input/library/package.json
new file mode 100644
index 00000000000000..4cfc60ea55f19c
--- /dev/null
+++ b/turbopack/crates/turbopack-tests/tests/execution/turbopack/side-effects-optimization/reexport-side-effect-barrel/input/library/package.json
@@ -0,0 +1,5 @@
+{
+  "sideEffects": [
+    "./registration.js"
+  ]
+}
diff --git a/turbopack/crates/turbopack-tests/tests/execution/turbopack/side-effects-optimization/reexport-side-effect-barrel/input/library/registration.js b/turbopack/crates/turbopack-tests/tests/execution/turbopack/side-effects-optimization/reexport-side-effect-barrel/input/library/registration.js
new file mode 100644
index 00000000000000..aa6463e2a2e5fe
--- /dev/null
+++ b/turbopack/crates/turbopack-tests/tests/execution/turbopack/side-effects-optimization/reexport-side-effect-barrel/input/library/registration.js
@@ -0,0 +1,3 @@
+import { ObjectElement } from './object'
+ObjectElement.foo = 'side-effect'
+export { ObjectElement }