From b02f9bdf6f9543ed2c9306d1da6cf969a1833b13 Mon Sep 17 00:00:00 2001
From: Josh Story <story@hey.com>
Date: Tue, 9 Apr 2024 10:39:25 -0700
Subject: [PATCH] [DOM] Infer react-server entries bundles if not explicitly
 configured (#28795)

When packaging we want to infer that a bundle exists for a
`react-server` file even if it isn't explicitly configured. This is
useful in particular for the react-server entrypoints that error on
import that were recently added to `react-dom`

This change also cleans up a wayward comment left behind in a prior PR
---
 packages/react-dom/src/ReactDOMSharedInternals.js |  4 ----
 scripts/rollup/packaging.js                       | 12 ++++++++++++
 2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/packages/react-dom/src/ReactDOMSharedInternals.js b/packages/react-dom/src/ReactDOMSharedInternals.js
index b9b1c07b8361c..50f19f563c9ad 100644
--- a/packages/react-dom/src/ReactDOMSharedInternals.js
+++ b/packages/react-dom/src/ReactDOMSharedInternals.js
@@ -47,8 +47,4 @@ const Internals: ReactDOMInternals = {
   usingClientEntryPoint: false,
 };
 
-// if (__DEV__) {
-//   (Internals: any).usingClientEntryPoint = false;
-// }
-
 export default Internals;
diff --git a/scripts/rollup/packaging.js b/scripts/rollup/packaging.js
index 64b1cf1735b7d..0c7123fae6d13 100644
--- a/scripts/rollup/packaging.js
+++ b/scripts/rollup/packaging.js
@@ -213,6 +213,18 @@ function filterOutEntrypoints(name) {
       hasBundle =
         entryPointsToHasBundle.get(entry + '.node') ||
         entryPointsToHasBundle.get(entry + '.browser');
+
+      // The .react-server and .rsc suffixes may not have a bundle representation but
+      // should infer their bundle status from the non-suffixed entry point.
+      if (entry.endsWith('.react-server')) {
+        hasBundle = entryPointsToHasBundle.get(
+          entry.slice(0, '.react-server'.length * -1)
+        );
+      } else if (entry.endsWith('.rsc')) {
+        hasBundle = entryPointsToHasBundle.get(
+          entry.slice(0, '.rsc'.length * -1)
+        );
+      }
     }
     if (hasBundle === undefined) {
       // This doesn't exist in the bundles. It's an extra file.