1 files changed, 4 insertions, 4 deletions
diff --git a/js/dir_test.ts b/js/dir_test.ts
index bb6b053fd..6c4e36d7a 100644
--- a/js/dir_test.ts
+++ b/js/dir_test.ts
@@ -1,11 +1,11 @@
 // Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
 import { test, testPerm, assert, assertEquals } from "./test_util.ts";
 
-test(function dirCwdNotNull() {
+test(function dirCwdNotNull(): void {
   assert(Deno.cwd() != null);
 });
 
-testPerm({ write: true }, function dirCwdChdirSuccess() {
+testPerm({ write: true }, function dirCwdChdirSuccess(): void {
   const initialdir = Deno.cwd();
   const path = Deno.makeTempDirSync();
   Deno.chdir(path);
@@ -18,7 +18,7 @@ testPerm({ write: true }, function dirCwdChdirSuccess() {
   Deno.chdir(initialdir);
 });
 
-testPerm({ write: true }, function dirCwdError() {
+testPerm({ write: true }, function dirCwdError(): void {
   // excluding windows since it throws resource busy, while removeSync
   if (["linux", "mac"].includes(Deno.build.os)) {
     const initialdir = Deno.cwd();
@@ -39,7 +39,7 @@ testPerm({ write: true }, function dirCwdError() {
   }
 });
 
-testPerm({ write: true }, function dirChdirError() {
+testPerm({ write: true }, function dirChdirError(): void {
   const path = Deno.makeTempDirSync() + "test";
   try {
     Deno.chdir(path);