Eslint fixes (denoland/deno_std#356)

Make warnings fail
Original: https://github.com/denoland/deno_std/commit/4543b563a9a01c8c168aafcbfd9d4634effba7fc

1 files changed, 3 insertions, 3 deletions

diff --git a/http/file_server_test.ts b/http/file_server_test.ts
index 31ddca08e..b976c0dc0 100644
--- a/http/file_server_test.ts
+++ b/http/file_server_test.ts
@@ -30,7 +30,7 @@ function killFileServer(): void {
   fileServer.stdout.close();
 }
 
-test(async function serveFile() {
+test(async function serveFile(): Promise<void> {
   await startFileServer();
   try {
     const res = await fetch("http://localhost:4500/azure-pipelines.yml");
@@ -47,7 +47,7 @@ test(async function serveFile() {
   }
 });
 
-test(async function serveDirectory() {
+test(async function serveDirectory(): Promise<void> {
   await startFileServer();
   try {
     const res = await fetch("http://localhost:4500/");
@@ -60,7 +60,7 @@ test(async function serveDirectory() {
   }
 });
 
-test(async function serveFallback() {
+test(async function serveFallback(): Promise<void> {
   await startFileServer();
   try {
     const res = await fetch("http://localhost:4500/badfile.txt");