1 files changed, 7 insertions, 5 deletions
diff --git a/tests/echo_server.ts b/tests/echo_server.ts
index 15c3112ce..73995eab5 100644
--- a/tests/echo_server.ts
+++ b/tests/echo_server.ts
@@ -2,8 +2,10 @@ const { args, listen, copy } = Deno;
 const addr = args[1] || "127.0.0.1:4544";
 const listener = listen("tcp", addr);
 console.log("listening on", addr);
-listener.accept().then(async conn => {
-  await copy(conn, conn);
-  conn.close();
-  listener.close();
-});
+listener.accept().then(
+  async (conn): Promise<void> => {
+    await copy(conn, conn);
+    conn.close();
+    listener.close();
+  }
+);