Fix TypeScript errors and update Dockerfile for Alpine compatibility

src/openrouter-api.ts

@@ -1,5 +1,5 @@
 import axios, { AxiosError, AxiosInstance } from 'axios';
-import { McpError } from '@modelcontextprotocol/sdk/types.js';
+import { McpError, ErrorCode } from '@modelcontextprotocol/sdk/types.js';
 
 /**
  * Client for interacting with the OpenRouter API
@@ -90,7 +90,7 @@ export class OpenRouterAPIClient {
       if (axiosError.response) {
         const responseData = axiosError.response.data as any;
         const message = responseData?.error?.message || axiosError.message;
-        throw new McpError('RequestFailed', `OpenRouter API error: ${message}`);
+        throw new McpError(ErrorCode.InternalError, `OpenRouter API error: ${message}`);
       }
     }
     
@@ -114,17 +114,17 @@ export class OpenRouterAPIClient {
         const message = responseData?.error?.message || axiosError.message;
         
         if (status === 401 || status === 403) {
-          throw new McpError('Unauthorized', `Authentication error: ${message}`);
+          throw new McpError(ErrorCode.InvalidRequest, `Authentication error: ${message}`);
         } else if (status === 429) {
-          throw new McpError('RateLimitExceeded', `Rate limit exceeded: ${message}`);
+          throw new McpError(ErrorCode.InternalError, `Rate limit exceeded: ${message}`);
         } else {
-          throw new McpError('RequestFailed', `OpenRouter API error (${status}): ${message}`);
+          throw new McpError(ErrorCode.InternalError, `OpenRouter API error (${status}): ${message}`);
         }
       } else if (axiosError.request) {
-        throw new McpError('NetworkError', `Network error: ${axiosError.message}`);
+        throw new McpError(ErrorCode.ConnectionClosed, `Network error: ${axiosError.message}`);
       }
     }
     
-    throw new McpError('UnknownError', `Unknown error: ${error.message || 'No error message'}`);
+    throw new McpError(ErrorCode.InternalError, `Unknown error: ${error.message || 'No error message'}`);
   }
 }

src/tool-handlers/analyze-image.ts

@@ -1,7 +1,7 @@
 import path from 'path';
 import { promises as fs } from 'fs';
 import sharp from 'sharp';
-import { McpError } from '@modelcontextprotocol/sdk/types.js';
+import { McpError, ErrorCode } from '@modelcontextprotocol/sdk/types.js';
 import OpenAI from 'openai';
 
 export interface AnalyzeImageToolRequest {
@@ -21,7 +21,7 @@ export async function handleAnalyzeImage(
     // Validate image path
     const imagePath = args.image_path;
     if (!path.isAbsolute(imagePath)) {
-      throw new McpError('InvalidParams', 'Image path must be absolute');
+      throw new McpError(ErrorCode.InvalidParams, 'Image path must be absolute');
     }
     
     // Read image file
@@ -85,7 +85,7 @@ export async function handleAnalyzeImage(
     // Call OpenRouter API
     const completion = await openai.chat.completions.create({
       model,
-      messages,
+      messages: messages as any,
     });
     
     return {

src/tool-handlers/get-model-info.ts

@@ -1,4 +1,4 @@
-import { McpError } from '@modelcontextprotocol/sdk/types.js';
+import { McpError, ErrorCode } from '@modelcontextprotocol/sdk/types.js';
 import { ModelCache } from '../model-cache.js';
 
 export interface GetModelInfoToolRequest {
@@ -26,7 +26,7 @@ export async function handleGetModelInfo(
     
     const model = modelCache.getModel(args.model);
     if (!model) {
-      throw new McpError('NotFound', `Model '${args.model}' not found`);
+      throw new McpError(ErrorCode.InvalidParams, `Model '${args.model}' not found`);
     }
     
     return {

src/tool-handlers/multi-image-analysis.ts

@@ -1,6 +1,6 @@
 import fetch from 'node-fetch';
 import sharp from 'sharp';
-import { McpError } from '@modelcontextprotocol/sdk/types.js';
+import { McpError, ErrorCode } from '@modelcontextprotocol/sdk/types.js';
 import OpenAI from 'openai';
 
 export interface MultiImageAnalysisToolRequest {
@@ -90,11 +90,11 @@ export async function handleMultiImageAnalysis(
   try {
     // Validate inputs
     if (!args.images || args.images.length === 0) {
-      throw new McpError('InvalidParams', 'At least one image is required');
+      throw new McpError(ErrorCode.InvalidParams, 'At least one image is required');
     }
     
     if (!args.prompt) {
-      throw new McpError('InvalidParams', 'A prompt is required');
+      throw new McpError(ErrorCode.InvalidParams, 'A prompt is required');
     }
     
     // Prepare content array for the message
@@ -137,7 +137,7 @@ export async function handleMultiImageAnalysis(
       messages: [{
         role: 'user',
         content
-      }]
+      }] as any
     });
     
     return {