gc more efficiently

src/index.js

@@ -9,6 +9,23 @@ export {
   YXmlHook as XmlHook,
   YXmlElement as XmlElement,
   YXmlFragment as XmlFragment,
+  YXmlEvent,
+  YMapEvent,
+  YArrayEvent,
+  YEvent,
+  AbstractItem,
+  AbstractStruct,
+  GC,
+  ItemBinary,
+  ItemDeleted,
+  ItemEmbed,
+  ItemFormat,
+  ItemJSON,
+  ItemString,
+  ItemType,
+  AbstractType,
+  compareCursors,
+  Cursor,
   createCursorFromTypeOffset,
   createCursorFromJSON,
   createAbsolutePositionFromCursor,
@@ -22,5 +39,10 @@ export {
   readStatesAsMap,
   writeStates,
   writeModel,
-  readModel
+  readModel,
+  Snapshot,
+  findRootTypeKey,
+  typeArrayToArraySnapshot,
+  typeMapGetSnapshot,
+  iterateDeletedStructs
 } from './internals.js'