diff --git a/src/EventEmitter.ts b/src/EventEmitter.ts
index 6d75bfc5..c33cb7aa 100644
--- a/src/EventEmitter.ts
+++ b/src/EventEmitter.ts
@@ -28,7 +28,7 @@
  * @class
  * @access private
  */
-class EventEmitter {
+export class EventEmitter {
   protected listeners: Map<string, Array<(...args : any[]) => void>>;
   /**
    * default constructor initialising a empty {@link Map} for event listeners.
diff --git a/src/resources/ListResource.ts b/src/resources/ListResource.ts
index b1ea660a..26ea5c54 100644
--- a/src/resources/ListResource.ts
+++ b/src/resources/ListResource.ts
@@ -278,7 +278,7 @@ export type filterOptions = {
   [key: string]: filterType
 }
 
-type filter = {
+export type filter = {
   exact?: string,
   search?: string,
   from?: any,
@@ -287,4 +287,4 @@ type filter = {
   all?: Array<string>
 }
 
-type filterType = Array<string> | number | string | filter;
+export type filterType = Array<string> | number | string | filter;