changes

lib/tools/calculator.ts

@@ -28,7 +28,7 @@ export const calculatorTool: Tool = {
 // Safe math evaluation using Function constructor with limited scope
 function safeEvaluate(expression: string): number {
   // Replace common math notation
-  let expr = expression
+  const expr = expression
     .replace(/\^/g, '**') // Exponents
     .replace(/sqrt/g, 'Math.sqrt')
     .replace(/sin/g, 'Math.sin')

lib/tools/code-execution.ts

@@ -44,9 +44,9 @@ export const codeExecutionHandler: ToolHandler = async (args): Promise<ToolResul
     const logs: string[] = [];
     const mockConsole = {
       log: (...args: unknown[]) => logs.push(args.map(String).join(' ')),
-      error: (...args: unknown[]) => logs.push('[ERROR] ' + args.map(String).join(' ')),
-      warn: (...args: unknown[]) => logs.push('[WARN] ' + args.map(String).join(' ')),
-      info: (...args: unknown[]) => logs.push('[INFO] ' + args.map(String).join(' ')),
+      error: (...args: unknown[]) => logs.push(`[ERROR] ${args.map(String).join(' ')}`),
+      warn: (...args: unknown[]) => logs.push(`[WARN] ${args.map(String).join(' ')}`),
+      info: (...args: unknown[]) => logs.push(`[INFO] ${args.map(String).join(' ')}`),
     };
 
     // Create a sandboxed context with limited globals
@@ -87,7 +87,6 @@ export const codeExecutionHandler: ToolHandler = async (args): Promise<ToolResul
       return fn.call(sandbox);
     };
 
-    let result: unknown;
     const timeoutPromise = new Promise<never>((_, reject) => {
       setTimeout(() => reject(new Error('Execution timed out')), timeoutMs);
     });
@@ -100,15 +99,15 @@ export const codeExecutionHandler: ToolHandler = async (args): Promise<ToolResul
       }
     });
 
-    result = await Promise.race([executionPromise, timeoutPromise]);
+    const result = await Promise.race([executionPromise, timeoutPromise]);
 
     // Format output
     let output = '';
     if (logs.length > 0) {
-      output += 'Console output:\n' + logs.join('\n') + '\n\n';
+      output += `Console output:\n${logs.join('\n')}\n\n`;
     }
     if (result !== undefined) {
-      output += 'Result: ' + JSON.stringify(result, null, 2);
+      output += `Result: ${JSON.stringify(result, null, 2)}`;
     } else if (logs.length === 0) {
       output = 'Code executed successfully (no output)';
     }

lib/tools/datetime.ts

@@ -41,7 +41,7 @@ export const dateTimeHandler: ToolHandler = async (args): Promise<ToolResult> =>
 
     switch (format) {
       case 'iso':
-        result = now.toLocaleString('sv-SE', { timeZone: timezone }).replace(' ', 'T') + 'Z';
+        result = `${now.toLocaleString('sv-SE', { timeZone: timezone }).replace(' ', 'T')}Z`;
         break;
       case 'date_only':
         result = now.toLocaleDateString('en-US', {

lib/tools/image-generation.ts

@@ -13,11 +13,11 @@ export const imageGenerationTool: Tool = {
   type: 'function',
   function: {
     name: 'generate_image',
-    description:
-      'Generate an image based on a text description. Creates images using AI image generation. ' +
-      (IMAGE_API_URL
+    description: `Generate an image based on a text description. Creates images using AI image generation. ${
+      IMAGE_API_URL
         ? 'Image generation is available.'
-        : 'NOTE: Image generation is not configured. Set IMAGE_GENERATION_API_URL environment variable.'),
+        : 'NOTE: Image generation is not configured. Set IMAGE_GENERATION_API_URL environment variable.'
+    }`,
     parameters: {
       type: 'object',
       properties: {

lib/tools/index.ts

@@ -18,7 +18,7 @@ import { webSearchHandler, webSearchTool } from './web-search';
 export type { ToolHandler, ToolResult } from './types';
 
 // Registry of tool handlers
-const toolHandlers: Map<string, ToolHandler> = new Map();
+const toolHandlers = new Map<string, ToolHandler>();
 
 /**
  * Register a tool handler

lib/tools/url-fetch.ts

@@ -106,7 +106,7 @@ export const urlFetchHandler: ToolHandler = async (args): Promise<ToolResult> =>
 
     // Truncate if needed
     if (text.length > maxLength) {
-      text = text.substring(0, maxLength) + '\n\n[Content truncated...]';
+      text = `${text.substring(0, maxLength)}\n\n[Content truncated...]`;
     }
 
     return {