Back out "Upgrade Prettier from 1.17 to 2.0.2."

Differential Revision: D20639755

fbshipit-source-id: 5028563f9cf0527a30b4259daac50cdc03934bfd

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

@@ -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) => {
     threw = true;
     expect(e).toMatchInlineSnapshot(
       `[CancelledPromiseError: Idler got killed]`,

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

@@ -26,7 +26,7 @@ const storage = new JsonFileStorage(
 test('A valid settings file gets parsed correctly', () => {
   return storage
     .getItem('anykey')
-    .then(result => expect(result).toEqual(validDeserializedData));
+    .then((result) => expect(result).toEqual(validDeserializedData));
 });
 
 test('deserialize works as expected', () => {