make configFilePath also nullable

Author: RobinMalfait

packages/@tailwindcss-upgrade/src/codemods/css/migrate-config.ts

@@ -11,10 +11,11 @@ export function migrateConfig(
   {
     configFilePath,
     jsConfigMigration,
-  }: { configFilePath: string; jsConfigMigration: JSConfigMigration | null },
+  }: { configFilePath: string | null; jsConfigMigration: JSConfigMigration | null },
 ): Plugin {
   function migrate() {
     if (!sheet.isTailwindRoot) return
+    if (!configFilePath) return
 
     let alreadyInjected = ALREADY_INJECTED.get(sheet)
     if (alreadyInjected && alreadyInjected.includes(configFilePath)) {

packages/@tailwindcss-upgrade/src/codemods/css/migrate.ts

@@ -18,7 +18,7 @@ export interface MigrateOptions {
   newPrefix: string | null
   designSystem: DesignSystem
   userConfig: Config | null
-  configFilePath: string
+  configFilePath: string | null
   jsConfigMigration: JSConfigMigration | null
 }
 

packages/@tailwindcss-upgrade/src/index.ts

@@ -156,23 +156,33 @@ async function run() {
       stylesheets.map(async (sheet) => {
         try {
           let config = configBySheet.get(sheet)
-          let jsConfigMigration = jsConfigMigrationBySheet.get(sheet)
+          let jsConfigMigration = jsConfigMigrationBySheet.get(sheet) ?? null
 
           if (!config) {
             for (let parent of sheet.ancestors()) {
               if (parent.isTailwindRoot) {
                 config ??= configBySheet.get(parent)!
-                jsConfigMigration ??= jsConfigMigrationBySheet.get(parent)
+                jsConfigMigration ??= jsConfigMigrationBySheet.get(parent) ?? null
                 break
               }
             }
           }
 
-          if (!config) return
+          let designSystem = config?.designSystem ?? (await sheet.designSystem())
+          if (!designSystem) {
+            return
+          }
+
+          let newPrefix = config?.newPrefix ?? null
+          let userConfig = config?.userConfig ?? null
+          let configFilePath = config?.configFilePath ?? null
 
           await migrateStylesheet(sheet, {
-            ...config,
-            jsConfigMigration: jsConfigMigration ?? null,
+            newPrefix,
+            designSystem,
+            userConfig,
+            configFilePath,
+            jsConfigMigration,
           })
         } catch (e: any) {
           error(`${e?.message ?? e} in ${highlight(relative(sheet.file!, base))}`, { prefix: '↳ ' })