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/flags/default_bool_test.ts b/flags/default_bool_test.ts
index a1a329074..dc953cdc8 100755
--- a/flags/default_bool_test.ts
+++ b/flags/default_bool_test.ts
@@ -3,7 +3,7 @@ import { test } from "../testing/mod.ts";
 import { assertEquals } from "../testing/asserts.ts";
 import { parse } from "./mod.ts";
 
-test(function booleanDefaultTrue() {
+test(function booleanDefaultTrue(): void {
   const argv = parse([], {
     boolean: "sometrue",
     default: { sometrue: true }
@@ -11,7 +11,7 @@ test(function booleanDefaultTrue() {
   assertEquals(argv.sometrue, true);
 });
 
-test(function booleanDefaultFalse() {
+test(function booleanDefaultFalse(): void {
   const argv = parse([], {
     boolean: "somefalse",
     default: { somefalse: false }
@@ -19,7 +19,7 @@ test(function booleanDefaultFalse() {
   assertEquals(argv.somefalse, false);
 });
 
-test(function booleanDefaultNull() {
+test(function booleanDefaultNull(): void {
   const argv = parse([], {
     boolean: "maybe",
     default: { maybe: null }