prettier 2

Summary:
Quick notes:

- This looks worse than it is. It adds mandatory parentheses to single argument lambdas. Lots of outrage on Twitter about it, personally I'm {emoji:1f937_200d_2642} about it.
- Space before function, e.g. `a = function ()` is now enforced. I like this because both were fine before.
- I added `eslint-config-prettier` to the config because otherwise a ton of rules conflict with eslint itself.

Close https://github.com/facebook/flipper/pull/915

Reviewed By: jknoxville

Differential Revision: D20594929

fbshipit-source-id: ca1c65376b90e009550dd6d1f4e0831d32cbff03

desktop/plugins/navigation/util/autoCompleteProvider.tsx

@@ -43,7 +43,7 @@ export const appMatchPatternsToAutoCompleteProvider = (
     icon: 'mobile',
     matchPatterns: new Map<string, URI>(),
   };
-  appMatchPatterns.forEach(appMatchPattern => {
+  appMatchPatterns.forEach((appMatchPattern) => {
     const matchPattern =
       appMatchPattern.className + ' - ' + appMatchPattern.pattern;
     autoCompleteProvider.matchPatterns.set(