refactor(cli/tests): remove unnecessary void return types (#11577)

1 files changed, 2 insertions, 2 deletions

diff --git a/cli/tests/012_async.ts b/cli/tests/012_async.ts
index 773272ca1..536197b68 100644
--- a/cli/tests/012_async.ts
+++ b/cli/tests/012_async.ts
@@ -1,6 +1,6 @@
 // Check that we can use the async keyword.
-async function main(): Promise<void> {
-  await new Promise((resolve): void => {
+async function main() {
+  await new Promise((resolve) => {
     console.log("2");
     setTimeout(resolve, 100);
   });