diff --git a/package.json b/package.json
index a897926..1914e3a 100644
--- a/package.json
+++ b/package.json
@@ -43,5 +43,13 @@
     },
     "lint-staged": {
         "*.ts(x)?": "prettier --write"
+    },
+    "tsd": {
+        "compilerOptions": {
+            "typeRoots": [
+                "./node_modules/@types",
+                "."
+            ]
+        }
     }
 }
diff --git a/test-d/index.test-d.ts b/test-d/index.test-d.ts
new file mode 100644
index 0000000..62ba0bd
--- /dev/null
+++ b/test-d/index.test-d.ts
@@ -0,0 +1,4 @@
+mw;
+mw.log.warn("foo");
+
+$;
diff --git a/test-d/vue.test-d.ts b/test-d/vue.test-d.ts
new file mode 100644
index 0000000..e43d2c0
--- /dev/null
+++ b/test-d/vue.test-d.ts
@@ -0,0 +1,4 @@
+import { expectType } from "tsd";
+import { createMwApp, createApp } from "vue";
+
+expectType<typeof createApp>(createMwApp);