fix: review suggestions

Author: Taozizz

src/services/anthropicService.ts

@@ -14,12 +14,12 @@ export function getModels(): ModelsResponse {
 		display_name: mockModel.name
 	}));
 
-	return {
-		data: models,
-		first_id: models[0].id,
-		last_id: models[models.length - 1].id,
-		has_more: false
-	}
+	return {  
+		data: models,  
+		first_id: models.length > 0 ? models[0].id : null,  
+		last_id:  models.length > 0 ? models[models.length - 1].id : null,  
+		has_more: false  
+	}  
 }
 /**
  * Non-streaming response
@@ -85,7 +85,7 @@ export function createMessage(request: MessagesRequest): MessagesResponse | Erro
 /**
  * Streaming response
  */
-export function* createMessageStream(request: MessagesRequest): any {
+export function* createMessageStream(request: MessagesRequest): Generator<string, void, unknown> {
 	//validate model
 	const model = findModelById(request.model);
 	if(!model){

src/types/anthropic.ts

@@ -19,7 +19,7 @@ export interface Message {
 	content: any; //temp
 }
 
-export interface MCP_Server{
+export interface MCPServer{
 	name:	string
   type: 'url';
 	url: string;
@@ -30,7 +30,7 @@ export interface MCP_Server{
 	};
 }
 
-export interface systemPrompt{
+export interface SystemPrompt{
 	text: string;
 	type: 'text';
 	cache_control?: {
@@ -57,14 +57,14 @@ export interface MessagesRequest {
 	messages: Message[];
 	max_tokens: number;
 	container?: string | null;
-	mcp_server?: MCP_Server;
+	mcp_server?: MCPServer;
 	metadata?: {
 		user_id?: string;
 	};
 	service_tier?: 'standard_only' | 'auto';
 	stop_sequence?: string[];
 	stream?: boolean;
-	system?: systemPrompt;
+	system?: SystemPrompt;
 	temperature?: number;
 	thinking?: Thinking;
 	tool_choice?: any;
@@ -85,7 +85,7 @@ export interface Usage{
 	server_tool_use: {
 		web_search_requests: number;
 	} | null;
-	service_tire: 'standard' | 'priority' | 'batch' | null;
+	service_tier: 'standard' | 'priority' | 'batch' | null;
 }
 
 export interface Container{
@@ -156,6 +156,10 @@ export interface ContentBlockDeltaEvent{
 	}
 }
 
+export interface ContentBlockStopEvent { type: 'content_block_stop'; index: number; }  
+export interface PingEvent { type: 'ping'; }  
+export interface ErrorEvent { type: 'error'; error: string; }  
+
 
 export type StreamingEvent = 
 	'message_start' | 

src/utils/anthropicHelpers.ts

@@ -13,7 +13,7 @@ export function getCurrentTimestamp(): number {
  * Generate message ID
  */
 export function generateMessageId(): string {
-  return `msg_${Math.random().toString(36).substr(2, 9)}`;
+  return `msg_${Math.random().toString(36).substring(2, 11)}`;  
 }
 
 /**