Fix import in index

src/index.ts

@@ -3,14 +3,14 @@ export {
   type GPTConfig,
   type GPTRequest,
   type Message,
-  type GPTEventMap 
+  type GPTEventMap,
 } from './gpt/gpt.js'
 
 export {
   AgenticGPT,
   type ToolFunction,
   type ToolRegistration,
-  type AgenticOptions
+  type AgenticOptions,
 } from './gpt/agentic-gpt.js';
 
 export {
@@ -21,9 +21,13 @@ export {
   type ToolCall,
   type ToolCallDelta,
   type JSONSchema,
-  type GPTResponse 
+  type GPTResponse,
 } from './gpt/gpt-response.js';
 
+import { GPT } from './gpt/gpt.js';
+import { AgenticGPT } from './gpt/agentic-gpt.js';
+import type { ToolDefinition } from './gpt/gpt-response.js';
+
 /**
  * Examples demonstrating the different usage patterns
  * Uncomment the example you want to run