diff --git a/src/index.ts b/src/index.ts
index 3bef5422b..04255a2a8 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -6,6 +6,7 @@ export { ClassTransformer } from './ClassTransformer';
 export * from './decorators';
 export * from './interfaces';
 export * from './enums';
+export * from './storage';
 
 const classTransformer = new ClassTransformer();
 
diff --git a/src/storage.ts b/src/storage.ts
index 7da84605f..b002ff313 100644
--- a/src/storage.ts
+++ b/src/storage.ts
@@ -10,4 +10,4 @@ if (!globalScope.classTransformerMetadataStorage) {
   globalScope.classTransformerMetadataStorage = new MetadataStorage();
 }
 
-export const defaultMetadataStorage = globalScope.classTransformerMetadataStorage;
+export const defaultMetadataStorage = globalScope.classTransformerMetadataStorage as MetadataStorage;