🐛 fix export

src/index.ts

@@ -1,7 +1,7 @@
 export { DataType } from "./dataType";
 export { BaseTypes } from "./baseTypes";
 export { defineType, defineTypeGenerator } from "./defineType";
-export { BufferStream } from "./bufferStream";
+export { BufferInputStream, BufferOutputStream, BufferStream } from "./bufferStream";
 export { read, write } from "./utils";
 export { Struct } from "./struct/struct";
 export { StructBuilder } from "./struct/structBuilder";