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/app/src/chrome/ExportDataPluginSheet.tsx

@@ -94,7 +94,7 @@ class ExportDataPluginSheet extends Component<Props, {}> {
               }
             }
           }}
-          onChange={selectedArray => {
+          onChange={(selectedArray) => {
             this.props.setSelectedPlugins(selectedArray);
           }}
           elements={this.props.availablePluginsToExport}
@@ -114,7 +114,7 @@ export default connect<StateFromProps, DispatchFromProps, OwnProps, Store>(
     pluginMessageQueue,
     connections: {selectedApp, clients},
   }) => {
-    const selectedClient = clients.find(o => {
+    const selectedClient = clients.find((o) => {
       return o.id === selectedApp;
     });
     const availablePluginsToExport = getActivePersistentPlugins(