fix(logging): improve error logging format in LeetCode services

Author: jinzcdev

src/index.ts

@@ -104,6 +104,6 @@ async function main() {
 }
 
 main().catch((error) => {
-    logger.error("Failed to start LeetCode MCP Server:", error);
+    logger.error("Failed to start LeetCode MCP Server: %s", error);
     process.exit(1);
 });

src/leetcode/leetcode-cn-service.ts

@@ -208,9 +208,7 @@ export class LeetCodeCNService implements LeetCodeBaseService {
                         difficulty: q.difficulty
                     }));
             } catch (e) {
-                logger.error("Error parsing similarQuestions:", {
-                    error: e
-                });
+                logger.error("Error parsing similarQuestions: %s", e);
             }
         }
 
@@ -359,7 +357,7 @@ export class LeetCodeCNService implements LeetCodeBaseService {
      * @returns Promise resolving to the solution detail data
      */
     async fetchSolutionArticleDetail(slug: string): Promise<any> {
-        const data = await this.leetCodeApi
+        return await this.leetCodeApi
             .graphql({
                 query: SOLUTION_ARTICLE_DETAIL_QUERY,
                 variables: {
@@ -369,8 +367,6 @@ export class LeetCodeCNService implements LeetCodeBaseService {
             .then((res) => {
                 return res.data?.solutionArticle;
             });
-        logger.info(data);
-        return data;
     }
 
     /**

src/leetcode/leetcode-global-service.ts

@@ -177,9 +177,7 @@ export class LeetCodeGlobalService implements LeetCodeBaseService {
                         difficulty: q.difficulty
                     }));
             } catch (e) {
-                logger.error("Error parsing similarQuestions:", {
-                    error: e
-                });
+                logger.error("Error parsing similarQuestions: %s", e);
             }
         }