feat(import-rewriter): add regex for rewriting tsdown/client references to vite-plus

Author: naokihaba

crates/vite_migration/src/import_rewriter.rs

@@ -363,6 +363,11 @@ static RE_REF_VITE_SUBPATH: LazyLock<Regex> = LazyLock::new(|| {
     Regex::new(r#"^(\s*///\s*<reference\s+types\s*=\s*["'])vite/(.+?)(["']\s*/>)"#).unwrap()
 });
 
+/// `tsdown/client` → `vite-plus/pack/client`
+static RE_REF_TSDOWN_CLIENT: LazyLock<Regex> = LazyLock::new(|| {
+    Regex::new(r#"^(\s*///\s*<reference\s+types\s*=\s*["'])tsdown/client(["']\s*/>)"#).unwrap()
+});
+
 /// bare `tsdown` → `vite-plus/pack`
 static RE_REF_TSDOWN: LazyLock<Regex> = LazyLock::new(|| {
     Regex::new(r#"^(\s*///\s*<reference\s+types\s*=\s*["'])tsdown(["']\s*/>)"#).unwrap()
@@ -527,10 +532,14 @@ fn rewrite_reference_types(content: &mut String, skip_packages: &SkipPackages) -
                 continue;
             }
         }
-        if !skip_packages.skip_tsdown
-            && apply_regex_replace(line, &RE_REF_TSDOWN, "${1}vite-plus/pack${2}")
-        {
-            changed = true;
+        if !skip_packages.skip_tsdown {
+            if apply_regex_replace(line, &RE_REF_TSDOWN_CLIENT, "${1}vite-plus/pack/client${2}") {
+                changed = true;
+                continue;
+            }
+            if apply_regex_replace(line, &RE_REF_TSDOWN, "${1}vite-plus/pack${2}") {
+                changed = true;
+            }
         }
     }
 
@@ -2553,12 +2562,14 @@ export default defineConfig({});"#
     }
 
     #[test]
-    fn test_rewrite_reference_types_tsdown_subpath_not_rewritten() {
-        // tsdown subpaths should NOT be rewritten because vite-plus only exports ./pack (no subpaths)
+    fn test_rewrite_reference_types_tsdown_client() {
         let content = r#"/// <reference types="tsdown/client" />"#;
         let result = rewrite_import_content(content, &SkipPackages::default()).unwrap();
-        assert!(!result.updated);
-        assert_eq!(result.content, content);
+        assert!(result.updated);
+        assert_eq!(
+            result.content,
+            r#"/// <reference types="vite-plus/pack/client" />"#
+        );
     }
 
     #[test]