From 83d180fc477b17bf33c7673f010b68e9f7d5e0a2 Mon Sep 17 00:00:00 2001
From: Tobbe Lundberg <tobbe@tlundberg.com>
Date: Mon, 18 Sep 2023 08:54:07 +0200
Subject: [PATCH] RSC: Check if index.html has already been updated during
 setup (#9197)

With this check in place it's now safe to run the setup command multiple
times, which is great when testing it.
---
 .../cli/src/commands/experimental/setupRscHandler.js   | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/packages/cli/src/commands/experimental/setupRscHandler.js b/packages/cli/src/commands/experimental/setupRscHandler.js
index aeb2d74ccd47..059a7de7b235 100644
--- a/packages/cli/src/commands/experimental/setupRscHandler.js
+++ b/packages/cli/src/commands/experimental/setupRscHandler.js
@@ -158,6 +158,16 @@ export const handler = async ({ force, verbose }) => {
         title: 'Updating index.html...',
         task: async () => {
           let indexHtml = fs.readFileSync(rwPaths.web.html, 'utf-8')
+
+          if (
+            /\n\s*<script type="module" src="entry.client.tsx"><\/script>/.test(
+              indexHtml
+            )
+          ) {
+            // index.html is already updated
+            return
+          }
+
           indexHtml = indexHtml.replace(
             'href="/favicon.png" />',
             'href="/favicon.png" />\n  <script type="module" src="entry.client.tsx"></script>'