Make dispatcher/plugins strict

Summary: _typescript_

Reviewed By: jknoxville

Differential Revision: D17258265

fbshipit-source-id: 875d434120422c782074d4c345f765684533e399

types/nodejs.tsx

@@ -9,7 +9,7 @@ declare module NodeJS {
   interface Global {
     __REVISION__: string | undefined;
     __VERSION__: string;
-    electronRequire: (name: string) => void;
+    electronRequire: (name: string) => any;
     window: Window | undefined;
     WebSocket: any;
     fetch: any;