fix pretty spacing

Author: Austin McDaniel

src/index.ts

@@ -52,8 +52,8 @@ export function createReducer(klass: any) {
   };
 }
 
-export function ofAction < T extends Action > (...allowedTypes: any[]) {
-  return function ofTypeOperator(source$: Actions <T>): Actions < T > {
+export function ofAction <T extends Action> (...allowedTypes: any[]) {
+  return function ofTypeOperator(source$: Actions <T>): Actions <T> {
     return filter.call(source$, (action: any) => {
       return allowedTypes.some(a => {
         const inst = new a();