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

1 files changed, 1 insertions, 1 deletions

diff --git a/cli/tests/echo_server.ts b/cli/tests/echo_server.ts
index 7c8b0e42d..84284bea1 100644
--- a/cli/tests/echo_server.ts
+++ b/cli/tests/echo_server.ts
@@ -4,7 +4,7 @@ const [hostname, port] = addr.split(":");
 const listener = Deno.listen({ hostname, port: Number(port) });
 console.log("listening on", addr);
 listener.accept().then(
-  async (conn): Promise<void> => {
+  async (conn) => {
     console.log("received bytes:", await copy(conn, conn));
     conn.close();
     listener.close();