Converted some left-over JavaScript file to TypeScript

Summary: Found some errors in a CI failure originating from a JavaScript file. The horror!

Reviewed By: jknoxville

Differential Revision: D29549998

fbshipit-source-id: 633100ec9a446050bb0c703dcc37e9b132b17198

desktop/app/src/utils/__tests__/Idler.node.tsx

@@ -7,8 +7,8 @@
  * @format
  */
 
-import {IdlerImpl, TestIdler} from '../Idler.tsx';
-import {sleep} from '../promiseTimeout.tsx';
+import {IdlerImpl, TestIdler} from '../Idler';
+import {sleep} from '../promiseTimeout';
 
 test('Idler should interrupt', async () => {
   const idler = new IdlerImpl();
@@ -64,7 +64,7 @@ test('TestIdler can be controlled', async () => {
   expect(idler.shouldIdle()).toBe(true);
 
   let threw = false;
-  const p = idler.idle().catch((e) => {
+  const p = idler.idle().catch((e: any) => {
     threw = true;
     expect(e).toMatchInlineSnapshot(
       `[CancelledPromiseError: Idler got killed]`,

desktop/app/src/utils/__tests__/adbConfig.node.tsx

@@ -7,7 +7,7 @@
  * @format
  */
 
-import adbConfig from '../adbConfig.tsx';
+import adbConfig from '../adbConfig';
 
 test('get host and port from ADB_SERVER_SOCKET', () => {
   process.env.ANDROID_ADB_SERVER_PORT = undefined;

desktop/app/src/utils/__tests__/environmentVariables.node.tsx

@@ -7,7 +7,7 @@
  * @format
  */
 
-import {parseFlipperPorts} from '../environmentVariables.tsx';
+import {parseFlipperPorts} from '../environmentVariables';
 
 test('Valid port overrides are parsed correctly', () => {
   const overrides = parseFlipperPorts('1111,2222');

desktop/app/src/utils/__tests__/jsonFileStorage.node.tsx

@@ -7,7 +7,7 @@
  * @format
  */
 
-import JsonFileStorage from '../jsonFileReduxPersistStorage.tsx';
+import JsonFileStorage from '../jsonFileReduxPersistStorage';
 import fs from 'fs';
 
 const validSerializedData = fs

desktop/app/src/utils/__tests__/packageMetadata.node.tsx

@@ -7,7 +7,7 @@
  * @format
  */
 
-import {readCurrentRevision} from '../packageMetadata.tsx';
+import {readCurrentRevision} from '../packageMetadata';
 
 test('readCurrentRevision does not return something meaningful in dev mode', async () => {
   const ret = await readCurrentRevision();

desktop/app/src/utils/__tests__/processConfig.node.tsx

@@ -7,7 +7,7 @@
  * @format
  */
 
-import {default as config, resetConfigForTesting} from '../processConfig.tsx';
+import {default as config, resetConfigForTesting} from '../processConfig';
 
 afterEach(() => {
   resetConfigForTesting();

desktop/app/src/utils/__tests__/promiseTimeout.node.tsx

@@ -7,12 +7,12 @@
  * @format
  */
 
-import promiseTimeout from '../promiseTimeout.tsx';
+import promiseTimeout from '../promiseTimeout';
 
 test('test promiseTimeout for timeout to happen', () => {
   const promise = promiseTimeout(
     200,
-    new Promise((resolve, reject) => {
+    new Promise<void>((resolve) => {
       const id = setTimeout(() => {
         clearTimeout(id);
         resolve();
@@ -27,7 +27,7 @@ test('test promiseTimeout for timeout to happen', () => {
 test('test promiseTimeout for timeout not to happen', () => {
   const promise = promiseTimeout(
     200,
-    new Promise((resolve, reject) => {
+    new Promise<string | void>((resolve) => {
       const id = setTimeout(() => {
         clearTimeout(id);
         resolve();