diff --git a/package.json b/package.json
index 1f5512e..c69731f 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
   "types": "index.d.ts",
   "imports": {
     "#src": "./src/index.ts",
-    "#types": "./src/types/index.d.ts"
+    "#types": "./src/types/index.ts"
   },
   "exports": {
     ".": "./index.js"
diff --git a/rollup.config.ts b/rollup.config.ts
index 68f2e43..25e141a 100644
--- a/rollup.config.ts
+++ b/rollup.config.ts
@@ -33,7 +33,7 @@ export default defineConfig([
         entries: [
           {
             find: '#types',
-            replacement: resolve(`${typesFolder}/${declarationFile}`),
+            replacement: resolve(`${typesFolder}/${indexFile}`),
           },
         ],
       }),
diff --git a/src/types/index.d.ts b/src/types/index.ts
similarity index 100%
rename from src/types/index.d.ts
rename to src/types/index.ts
diff --git a/src/types/user-config.d.ts b/src/types/user-config.ts
similarity index 92%
rename from src/types/user-config.d.ts
rename to src/types/user-config.ts
index 7e6dc5f..bc37dc8 100644
--- a/src/types/user-config.d.ts
+++ b/src/types/user-config.ts
@@ -11,4 +11,4 @@ interface UserConfig extends Options {
   preset?: string;
 }
 
-export { UserConfig };
+export type { UserConfig };