Convert utils/pluginUtils to TS

Reviewed By: danielbuechele

Differential Revision: D16710689

fbshipit-source-id: 8da309810f633af27759286521c784ac665531b9

src/utils/__tests__/pluginUtils.node.js

@@ -5,7 +5,10 @@
  * @format
  */
 
-import {getPersistentPlugins, getActivePersistentPlugins} from '../pluginUtils';
+import {
+  getPersistentPlugins,
+  getActivePersistentPlugins,
+} from '../pluginUtils.tsx';
 import type {State as PluginsState} from '../../reducers/plugins.tsx';
 import type {State as PluginStatesState} from '../../reducers/pluginStates.tsx';
 import type {PluginDefinition} from '../../dispatcher/plugins.tsx';