1 files changed, 6 insertions, 4 deletions
diff --git a/tests/012_async.ts b/tests/012_async.ts
index 12df73b3e..1f1822c04 100644
--- a/tests/012_async.ts
+++ b/tests/012_async.ts
@@ -1,9 +1,11 @@
 // Check that we can use the async keyword.
 async function main(): Promise<void> {
-  await new Promise(resolve => {
-    console.log("2");
-    setTimeout(resolve, 100);
-  });
+  await new Promise(
+    (resolve): void => {
+      console.log("2");
+      setTimeout(resolve, 100);
+    }
+  );
   console.log("3");
 }