finally got the exports sorted out i think

index.ts

@@ -1,4 +1,26 @@
+import Collectors, {Collector} from './collectors';
 import Optional from './optional';
-import Stream from './stream';
+import Stream, { StreamIterator } from './stream';
+import Errors from './errors';
+import { Comparator, Consumer, BiConsumer, BiFunction, BiPredicate, Transformer, Supplier, Predicate } from './functions';
 
-export { Optional, Stream };
+export {
+    Collector,
+    Collectors,
+
+    Optional,
+
+    Stream,
+    StreamIterator,
+
+    Errors,
+
+    Comparator, 
+    Consumer, 
+    BiConsumer, 
+    BiFunction, 
+    BiPredicate, 
+    Transformer, 
+    Supplier, 
+    Predicate,
+};

package.json

@@ -1,6 +1,6 @@
 {
   "name": "java8script",
-  "version": "1.0.2",
+  "version": "1.0.3",
   "description": "Implementing Java 8 features like optionals and streams in javascript (typescript)",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",