From c095071f2202fd68783e1a2fbcded277694ae7d6 Mon Sep 17 00:00:00 2001
From: Robin Malfait <malfait.robin@gmail.com>
Date: Sat, 3 May 2025 00:48:45 +0200
Subject: [PATCH] Skip `.css` files when migrating templates (#17854)

This PR fixes an issue where the upgrade tool also migrates `.css` files
as-if they are content files. This is not the intended behavior.

## Test plan

Ran this on my personal website.

Before:
<img width="1316" alt="image"
src="https://github.com/user-attachments/assets/2b7337c6-7b88-4811-911f-139ab2e31b3b"
/>

After:
<img width="1046" alt="image"
src="https://github.com/user-attachments/assets/55f09355-37cb-419b-9924-973cf2681c1d"
/>
---
 CHANGELOG.md                               | 2 +-
 packages/@tailwindcss-upgrade/src/index.ts | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3de214458..a8982c4b2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,7 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
-- Upgrade: Automatically convert candidates with arbitrary values to their utilities ([#17831](https://github.com/tailwindlabs/tailwindcss/pull/17831))
+- Upgrade: Automatically convert candidates with arbitrary values to their utilities ([#17831](https://github.com/tailwindlabs/tailwindcss/pull/17831), [#17854](https://github.com/tailwindlabs/tailwindcss/pull/17854))
 
 ### Fixed
 
diff --git a/packages/@tailwindcss-upgrade/src/index.ts b/packages/@tailwindcss-upgrade/src/index.ts
index ed802a2e0..c6a7e2250 100644
--- a/packages/@tailwindcss-upgrade/src/index.ts
+++ b/packages/@tailwindcss-upgrade/src/index.ts
@@ -283,6 +283,7 @@ async function run() {
         let scanner = new Scanner({ sources })
         let filesToMigrate = []
         for (let file of scanner.files) {
+          if (file.endsWith('.css')) continue
           if (seenFiles.has(file)) continue
           seenFiles.add(file)
           filesToMigrate.push(file)