diff --git a/wasm/rico/README.md b/wasm/rico/README.md
index a6924f8..a0cb866 100644
--- a/wasm/rico/README.md
+++ b/wasm/rico/README.md
@@ -28,7 +28,7 @@ async function main() {
 
   try {
     // Parse Thrift IDL to AST with full type information
-    const ast: Document = await Rico.parse(input);
+    const ast: Document = await Rico.parse(input, false);
 
     // Type-safe access to AST properties
     ast.members.forEach(member => {
@@ -96,7 +96,8 @@ Rico provides a comprehensive type system that exactly matches the Rust AST defi
 - `Field`: Field definitions in structs/unions/exceptions
 - `FieldType`: Union type of all possible field types
   - `CommonType`: Basic types (string, i32, etc.)
-  - `CollectionType`: Lists and sets
+  - `FieldSetType`: Sets
+  - `FieldListType`: Lists
   - `MapType`: Map types with key and value types
 
 ### Value Types
@@ -126,7 +127,7 @@ interface Span {
 ### Type Safety Example
 
 ```typescript
-import { Document, Struct, Field, FieldType } from '@rico/wasm';
+import { Document, Struct, Field, FieldType } from '@rico-core/parser';
 
 function processStruct(struct: Struct) {
   // All fields are properly typed
diff --git a/wasm/rico/package.json b/wasm/rico/package.json
index 1aba054..992ec59 100644
--- a/wasm/rico/package.json
+++ b/wasm/rico/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@rico-core/parser",
-  "version": "0.0.3",
+  "version": "0.0.4",
   "description": "WebAssembly bindings for Rico - A high-performance Apache Thrift IDL parser",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
diff --git a/wasm/rico/src/types.ts b/wasm/rico/src/types.ts
index 7673778..9be35ab 100644
--- a/wasm/rico/src/types.ts
+++ b/wasm/rico/src/types.ts
@@ -167,8 +167,15 @@ export interface Service extends BaseNode {
   members: Function[];
 }
 
-export interface FieldCollectionType {
-  kind: 'CollectionType';
+export interface FieldListType {
+  kind: 'ListType';
+  loc: LOC;
+  value: string;
+  valueType: FieldType;
+}
+
+export interface FieldSetType {
+  kind: 'SetType';
   loc: LOC;
   value: string;
   valueType: FieldType;
@@ -184,7 +191,8 @@ export interface FieldMapType {
 
 export type FieldType =
   | { kind: 'CommonType'; value: string; loc: LOC }
-  | FieldCollectionType
+  | FieldListType
+  | FieldSetType
   | FieldMapType;
 
 export interface ConstList {