diff --git a/src/csv-loader/loader.ts b/src/csv-loader/loader.ts
index 7f741af..9dfa32b 100644
--- a/src/csv-loader/loader.ts
+++ b/src/csv-loader/loader.ts
@@ -493,7 +493,7 @@ class ReferenceValueParser {
 /**
  * Convert a schema to TypeScript type string
  */
-function schemaToTypeString(schema: Schema, resourceNames?: Map<string, string>): string {
+export function schemaToTypeString(schema: Schema, resourceNames?: Map<string, string>): string {
   switch (schema.type) {
     case 'string':
       return 'string';
@@ -519,7 +519,7 @@ function schemaToTypeString(schema: Schema, resourceNames?: Map<string, string>)
           const typeStr = schemaToTypeString(el.schema, resourceNames);
           return el.name ? `${el.name}: ${typeStr}` : typeStr;
         });
-        return `[${tupleElements.join(', ')}]`;
+        return `[${tupleElements.join(', ')}][]`;
       }
       // Wrap union types in parentheses to maintain correct precedence
       const elementType = schemaToTypeString(schema.element, resourceNames);
diff --git a/src/index.ts b/src/index.ts
index 87e89d3..78ff52b 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -15,4 +15,5 @@ export function defineSchema(schemaString: string): ParsedSchema {
 }
 
 export { parseSchema, parseValue, createValidator, ParseError };
+export { schemaToTypeString } from './csv-loader/loader.js';
 export type { Schema, PrimitiveSchema, TupleSchema, ArraySchema, ReferenceSchema, StringLiteralSchema, UnionSchema, ParsedSchema };
diff --git a/src/type-gen.test.ts b/src/type-gen.test.ts
index 4d4ac69..42183c9 100644
--- a/src/type-gen.test.ts
+++ b/src/type-gen.test.ts
@@ -1,5 +1,5 @@
 import { describe, it, expect } from 'vitest';
-import { defineSchema, parseSchema } from './index';
+import { defineSchema, parseSchema, schemaToTypeString } from './index';
 import type { Schema, StringLiteralSchema, UnionSchema } from './types';
 
 describe('Type generation for string literals and unions', () => {
@@ -136,64 +136,39 @@ describe('Type generation for string literals and unions', () => {
   });
 
   describe('Type string generation', () => {
-    // Helper function to test type generation
-    function generateType(schema: Schema): string {
-      function toType(s: Schema): string {
-        switch (s.type) {
-          case 'string': return 'string';
-          case 'number':
-          case 'int':
-          case 'float': return 'number';
-          case 'boolean': return 'boolean';
-          case 'stringLiteral': return `"${s.value}"`;
-          case 'union': return s.members.map(m => toType(m)).join(' | ');
-          case 'array':
-            const elemType = toType(s.element);
-            if (s.element.type === 'union') {
-              return `(${elemType})[]`;
-            }
-            return `${elemType}[]`;
-          case 'tuple':
-            const elements = s.elements.map(el => {
-              const typeStr = toType(el.schema);
-              return el.name ? `${el.name}: ${typeStr}` : typeStr;
-            });
-            return `[${elements.join(', ')}]`;
-          default: return 'unknown';
-        }
-      }
-      return toType(schema);
-    }
-
     it('should generate "on" for string literal', () => {
       const schema = parseSchema('"on"');
-      expect(generateType(schema)).toBe('"on"');
+      expect(schemaToTypeString(schema)).toBe('"on"');
     });
 
     it('should generate "on" | "off" for union of string literals', () => {
       const schema = parseSchema('"on" | "off"');
-      expect(generateType(schema)).toBe('"on" | "off"');
+      expect(schemaToTypeString(schema)).toBe('"on" | "off"');
     });
 
     it('should generate correct type for array of string literals', () => {
       const schema = parseSchema('"item"[]');
-      expect(generateType(schema)).toBe('"item"[]');
+      expect(schemaToTypeString(schema)).toBe('"item"[]');
     });
 
     it('should generate correct type for array of unions', () => {
       const schema = parseSchema('("pending" | "approved" | "rejected")[]');
-      // Union types in arrays need parentheses for correct precedence
-      expect(generateType(schema)).toBe('("pending" | "approved" | "rejected")[]');
+      expect(schemaToTypeString(schema)).toBe('("pending" | "approved" | "rejected")[]');
     });
 
     it('should generate correct type for tuple with union field', () => {
       const schema = parseSchema('[name: string; status: "active" | "inactive"]');
-      expect(generateType(schema)).toBe('[name: string, status: "active" | "inactive"]');
+      expect(schemaToTypeString(schema)).toBe('[name: string, status: "active" | "inactive"]');
     });
 
     it('should generate correct type for complex union', () => {
       const schema = parseSchema('string | number | "special"');
-      expect(generateType(schema)).toBe('string | number | "special"');
+      expect(schemaToTypeString(schema)).toBe('string | number | "special"');
+    });
+
+    it('should generate correct type for nested tuple with references', () => {
+      const schema = parseSchema('[data: @enemy; hp: int; ([effect: @effect;stacks: int])[]][]');
+      expect(schemaToTypeString(schema)).toBe('[data: Enemy, hp: number, [effect: Effect, stacks: number][]][]');
     });
   });
 });