only migrate PostCSS config when migrating Tailwind CSS v3 projects

RobinMalfait · RobinMalfait · commit 96c49be74e11 · 2025-04-18T13:03:47.000+02:00
diff --git a/packages/@tailwindcss-upgrade/src/index.ts b/packages/@tailwindcss-upgrade/src/index.ts
@@ -257,7 +257,7 @@ async function run() {
     }
   }
 
-  {
+  if (version.isMajor(3)) {
     // PostCSS config migration
     await migratePostCSSConfig(base)
   }

Original file line number	Diff line number	Diff line change
`@@ -257,7 +257,7 @@ async function run() {`
`257`	`257`	`}`
`258`	`258`	`}`
`259`	`259`
`260`		`- {`
	`260`	`+ if (version.isMajor(3)) {`
`261`	`261`	`// PostCSS config migration`
`262`	`262`	`await migratePostCSSConfig(base)`
`263`	`263`	`}`