Fix import in index

src/index.ts

@@ -1,29 +1,33 @@
 export {
   GPT,
-  type GPTConfig, 
-  type GPTRequest, 
-  type Message, 
-  type GPTEventMap 
+  type GPTConfig,
+  type GPTRequest,
+  type Message,
+  type GPTEventMap,
 } from './gpt/gpt.js'
 
-export { 
+export {
   AgenticGPT,
   type ToolFunction,
   type ToolRegistration,
-  type AgenticOptions
+  type AgenticOptions,
 } from './gpt/agentic-gpt.js';
 
-export { 
+export {
   GPTResponseIterator,
-  type MessageChunk, 
-  type FinalResult, 
-  type ToolDefinition, 
-  type ToolCall, 
+  type MessageChunk,
+  type FinalResult,
+  type ToolDefinition,
+  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