feat: Optimize the code

packages/core/src/tools/web-search/base-provider.ts

@@ -4,16 +4,11 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import type {
+import type { WebSearchProvider, WebSearchResult } from './types.js';
-  WebSearchProvider,
-  WebSearchResult,
-  WebSearchResultItem,
-} from './types.js';
-import { WebSearchError } from './errors.js';
 
 /**
  * Base implementation for web search providers.
- * Provides common functionality for error handling and result formatting.
+ * Provides common functionality for error handling.
  */
 export abstract class BaseWebSearchProvider implements WebSearchProvider {
   abstract readonly name: string;
@@ -42,38 +37,22 @@ export abstract class BaseWebSearchProvider implements WebSearchProvider {
    */
   async search(query: string, signal: AbortSignal): Promise<WebSearchResult> {
     if (!this.isAvailable()) {
-      throw new WebSearchError(
+      throw new Error(
-        this.name,
+        `[${this.name}] Provider is not available. Please check your configuration.`,
-        'Provider is not available. Please check your configuration.',
       );
     }
 
     try {
       return await this.performSearch(query, signal);
     } catch (error: unknown) {
-      if (error instanceof WebSearchError) {
+      if (
+        error instanceof Error &&
+        error.message.startsWith(`[${this.name}]`)
+      ) {
         throw error;
       }
-      throw new WebSearchError(this.name, 'Search failed', error);
+      const message = error instanceof Error ? error.message : String(error);
+      throw new Error(`[${this.name}] Search failed: ${message}`);
     }
   }
-
-  /**
-   * Format search results into a consistent format.
-   * @param results Raw results from the provider
-   * @param query The original search query
-   * @param answer Optional answer from the provider
-   * @returns Formatted search results
-   */
-  protected formatResults(
-    results: WebSearchResultItem[],
-    query: string,
-    answer?: string,
-  ): WebSearchResult {
-    return {
-      query,
-      answer,
-      results,
-    };
-  }
 }

packages/core/src/tools/web-search/errors.ts

@@ -1,19 +0,0 @@
-/**
- * @license
- * Copyright 2025 Qwen
- * SPDX-License-Identifier: Apache-2.0
- */
-
-/**
- * Custom error class for web search operations.
- */
-export class WebSearchError extends Error {
-  constructor(
-    readonly provider: string,
-    message: string,
-    readonly originalError?: unknown,
-  ) {
-    super(`[${provider}] ${message}`);
-    this.name = 'WebSearchError';
-  }
-}

packages/core/src/tools/web-search/providers/dashscope-provider.ts

@@ -5,7 +5,6 @@
  */
 
 import { BaseWebSearchProvider } from '../base-provider.js';
-import { WebSearchError } from '../errors.js';
 import type {
   WebSearchResult,
   WebSearchResultItem,
@@ -104,8 +103,7 @@ export class DashScopeProvider extends BaseWebSearchProvider {
 
     if (!response.ok) {
       const text = await response.text().catch(() => '');
-      throw new WebSearchError(
+      throw new Error(
-        this.name,
         `API error: ${response.status} ${response.statusText}${text ? ` - ${text}` : ''}`,
       );
     }
@@ -113,10 +111,7 @@ export class DashScopeProvider extends BaseWebSearchProvider {
     const data = (await response.json()) as DashScopeSearchResponse;
 
     if (data.status !== 0) {
-      throw new WebSearchError(
+      throw new Error(`API error: ${data.message || 'Unknown error'}`);
-        this.name,
-        `API error: ${data.message || 'Unknown error'}`,
-      );
     }
 
     const results: WebSearchResultItem[] = (data.data?.docs || []).map(
@@ -129,6 +124,9 @@ export class DashScopeProvider extends BaseWebSearchProvider {
       }),
     );
 
-    return this.formatResults(results, query, undefined);
+    return {
+      query,
+      results,
+    };
   }
 }

packages/core/src/tools/web-search/providers/google-provider.ts

@@ -5,7 +5,6 @@
  */
 
 import { BaseWebSearchProvider } from '../base-provider.js';
-import { WebSearchError } from '../errors.js';
 import type {
   WebSearchResult,
   WebSearchResultItem,
@@ -71,8 +70,7 @@ export class GoogleProvider extends BaseWebSearchProvider {
 
     if (!response.ok) {
       const text = await response.text().catch(() => '');
-      throw new WebSearchError(
+      throw new Error(
-        this.name,
         `API error: ${response.status} ${response.statusText}${text ? ` - ${text}` : ''}`,
       );
     }
@@ -85,6 +83,9 @@ export class GoogleProvider extends BaseWebSearchProvider {
       content: item.snippet,
     }));
 
-    return this.formatResults(results, query, undefined);
+    return {
+      query,
+      results,
+    };
   }
 }

packages/core/src/tools/web-search/providers/tavily-provider.ts

@@ -5,7 +5,6 @@
  */
 
 import { BaseWebSearchProvider } from '../base-provider.js';
-import { WebSearchError } from '../errors.js';
 import type {
   WebSearchResult,
   WebSearchResultItem,
@@ -61,8 +60,7 @@ export class TavilyProvider extends BaseWebSearchProvider {
 
     if (!response.ok) {
       const text = await response.text().catch(() => '');
-      throw new WebSearchError(
+      throw new Error(
-        this.name,
         `API error: ${response.status} ${response.statusText}${text ? ` - ${text}` : ''}`,
       );
     }
@@ -77,6 +75,10 @@ export class TavilyProvider extends BaseWebSearchProvider {
       publishedDate: r.published_date,
     }));
 
-    return this.formatResults(results, query, data.answer?.trim());
+    return {
+      query,
+      answer: data.answer?.trim(),
+      results,
+    };
   }
 }

packages/core/src/tools/web-search/utils.ts

@@ -8,19 +8,6 @@
  * Utility functions for web search formatting and processing.
  */
 
-/**
- * Format sources into a numbered list with titles and URLs.
- * @param sources Array of source objects with title and url
- * @returns Formatted source list string
- */
-export function formatSources(
-  sources: Array<{ title: string; url: string }>,
-): string {
-  return sources
-    .map((s, i) => `[${i + 1}] ${s.title || 'Untitled'} (${s.url})`)
-    .join('\n');
-}
-
 /**
  * Build content string with appended sources section.
  * @param content Main content text
@@ -32,7 +19,10 @@ export function buildContentWithSources(
   sources: Array<{ title: string; url: string }>,
 ): string {
   if (!sources.length) return content;
-  return `${content}\n\nSources:\n${formatSources(sources)}`;
+  const sourceList = sources
+    .map((s, i) => `[${i + 1}] ${s.title || 'Untitled'} (${s.url})`)
+    .join('\n');
+  return `${content}\n\nSources:\n${sourceList}`;
 }
 
 /**