Fix TypeScript compilation errors in backend

- Fix query parameter type issues (string | string[] to string) in controllers
- Add public getDatabaseAdapter() method to SchemaRepository for db access
- Fix SchemaSyncService export and import issues
- Fix referenceObject vs referenceObjectType property name
- Add missing jiraAssetsClient import in normalizedCacheStore
- Fix duplicate properties in object literals
- Add type annotations for implicit any types
- Fix type predicate issues with generics
- Fix method calls (getEnabledObjectTypes, syncAllSchemas)
- Fix type mismatches (ObjectTypeRecord vs expected types)
- Fix Buffer type issue in biaMatchingService
- Export SchemaSyncService class for ServiceFactory

backend/src/api/controllers/DebugController.ts

@@ -157,7 +157,11 @@ export class DebugController {
    */
   async getObjectTypeStats(req: Request, res: Response): Promise<void> {
     try {
-      const typeName = req.params.typeName;
+      const typeName = Array.isArray(req.params.typeName) ? req.params.typeName[0] : req.params.typeName;
+      if (!typeName) {
+        res.status(400).json({ error: 'typeName parameter required' });
+        return;
+      }
       const services = getServices();
 
       // Get object count
@@ -194,7 +198,7 @@ export class DebugController {
   async getAllObjectTypes(req: Request, res: Response): Promise<void> {
     try {
       const services = getServices();
-      const db = services.schemaRepo.db;
+      const db = services.schemaRepo.getDatabaseAdapter();
 
       // Check if object_types table exists
       try {
@@ -243,7 +247,13 @@ export class DebugController {
       // Get enabled types via service (may fail if table has issues)
       let enabledTypes: Array<{ typeName: string; displayName: string; schemaId: string; objectTypeId: number }> = [];
       try {
-        enabledTypes = await services.schemaSyncService.getEnabledObjectTypes();
+        const rawTypes = await services.schemaRepo.getEnabledObjectTypes();
+        enabledTypes = rawTypes.map(t => ({
+          typeName: t.typeName,
+          displayName: t.displayName,
+          schemaId: t.schemaId.toString(),
+          objectTypeId: t.id,
+        }));
         logger.debug(`DebugController: getEnabledObjectTypes returned ${enabledTypes.length} types: ${enabledTypes.map(t => t.typeName).join(', ')}`);
       } catch (error) {
         logger.error('DebugController: Failed to get enabled types via service', error);
@@ -295,9 +305,13 @@ export class DebugController {
    */
   async diagnoseObjectType(req: Request, res: Response): Promise<void> {
     try {
-      const typeName = req.params.typeName;
+      const typeName = Array.isArray(req.params.typeName) ? req.params.typeName[0] : req.params.typeName;
+      if (!typeName) {
+        res.status(400).json({ error: 'typeName parameter required' });
+        return;
+      }
       const services = getServices();
-      const db = services.schemaRepo.db;
+      const db = services.schemaRepo.getDatabaseAdapter();
       const isPostgres = db.isPostgres === true;
       const enabledCondition = isPostgres ? 'enabled IS true' : 'enabled = 1';
 
@@ -351,14 +365,14 @@ export class DebugController {
       // Check enabled types via service
       let enabledTypesFromService: string[] = [];
       try {
-        const enabledTypes = await services.schemaSyncService.getEnabledObjectTypes();
+        const rawTypes = await services.schemaRepo.getEnabledObjectTypes();
-        enabledTypesFromService = enabledTypes.map(t => t.typeName);
+        enabledTypesFromService = rawTypes.map((t: { typeName: string }) => t.typeName);
       } catch (error) {
         logger.error('DebugController: Failed to get enabled types from service', error);
       }
 
       // Check if type is in enabled list from service
-      const isInEnabledList = enabledTypesFromService.includes(typeName);
+      const isInEnabledList = enabledTypesFromService.includes(typeName as string);
 
       res.json({
         requestedType: typeName,
@@ -432,7 +446,7 @@ export class DebugController {
   async fixMissingTypeNames(req: Request, res: Response): Promise<void> {
     try {
       const services = getServices();
-      const db = services.schemaRepo.db;
+      const db = services.schemaRepo.getDatabaseAdapter();
       
       // Find all object types with NULL or empty type_name
       // Also check for enabled ones specifically
@@ -510,15 +524,16 @@ export class DebugController {
       }
 
       // Re-fetch enabled types to verify fix (reuse services from line 294)
-      const enabledTypesAfterFix = await services.schemaSyncService.getEnabledObjectTypes();
+      const rawTypes = await services.schemaRepo.getEnabledObjectTypes();
+      const enabledTypesAfterFix = rawTypes.map(t => t.typeName);
       
       res.json({
         success: true,
         fixed: fixes.length,
-        errors: errors.length,
+        errorCount: errors.length,
         fixes,
         errors: errors.length > 0 ? errors : undefined,
-        enabledTypesAfterFix: enabledTypesAfterFix.map(t => t.typeName),
+        enabledTypesAfterFix: enabledTypesAfterFix,
         note: enabledWithNullTypeName.length > 0 
           ? `Fixed ${enabledWithNullTypeName.length} enabled types that were missing type_name. They should now appear in enabled types list.`
           : undefined,

backend/src/api/controllers/SyncController.ts

@@ -14,11 +14,11 @@ export class SyncController {
   async syncSchemas(req: Request, res: Response): Promise<void> {
     try {
       const services = getServices();
-      const result = await services.schemaSyncService.syncAllSchemas();
+      const result = await services.schemaSyncService.syncAll();
 
       res.json({
-        success: true,
         ...result,
+        success: result.success !== undefined ? result.success : true,
       });
     } catch (error) {
       logger.error('SyncController: Failed to sync schemas', error);
@@ -38,9 +38,9 @@ export class SyncController {
       const services = getServices();
 
       // Get enabled types
-      const enabledTypes = await services.schemaSyncService.getEnabledObjectTypes();
+      const rawTypes = await services.schemaRepo.getEnabledObjectTypes();
 
-      if (enabledTypes.length === 0) {
+      if (rawTypes.length === 0) {
         res.status(400).json({
           success: false,
           error: 'No object types enabled for syncing. Please configure object types in Schema Configuration.',
@@ -54,10 +54,10 @@ export class SyncController {
       let totalRelations = 0;
 
       // Sync each enabled type
-      for (const type of enabledTypes) {
+      for (const type of rawTypes) {
         const result = await services.objectSyncService.syncObjectType(
-          type.schemaId,
+          type.schemaId.toString(),
-          type.objectTypeId,
+          type.id,
           type.typeName,
           type.displayName
         );
@@ -95,21 +95,31 @@ export class SyncController {
    */
   async syncObjectType(req: Request, res: Response): Promise<void> {
     try {
-      const typeName = req.params.typeName;
+      const typeName = Array.isArray(req.params.typeName) ? req.params.typeName[0] : req.params.typeName;
+      if (!typeName) {
+        res.status(400).json({ error: 'typeName parameter required' });
+        return;
+      }
       const services = getServices();
 
       // Get enabled types
-      let enabledTypes = await services.schemaSyncService.getEnabledObjectTypes();
+      let rawTypes = await services.schemaRepo.getEnabledObjectTypes();
+      let enabledTypes = rawTypes.map(t => ({
+        typeName: t.typeName,
+        displayName: t.displayName,
+        schemaId: t.schemaId.toString(),
+        objectTypeId: t.id,
+      }));
       
       // Filter out any entries with missing typeName
-      enabledTypes = enabledTypes.filter(t => t && t.typeName);
+      enabledTypes = enabledTypes.filter((t: { typeName?: string }) => t && t.typeName);
       
       // Debug logging - also check database directly
       logger.info(`SyncController: Looking for type "${typeName}" in ${enabledTypes.length} enabled types`);
-      logger.debug(`SyncController: Enabled types: ${JSON.stringify(enabledTypes.map(t => ({ typeName: t?.typeName, displayName: t?.displayName })))}`);
+      logger.debug(`SyncController: Enabled types: ${JSON.stringify(enabledTypes.map((t: { typeName?: string; displayName?: string }) => ({ typeName: t?.typeName, displayName: t?.displayName })))}`);
       
       // Additional debug: Check database directly for enabled types (including those with missing type_name)
-      const db = services.schemaRepo.db;
+      const db = services.schemaRepo.getDatabaseAdapter();
       const isPostgres = db.isPostgres === true;
       const enabledCondition = isPostgres ? 'enabled IS true' : 'enabled = 1';
       const dbCheck = await db.query<{ type_name: string | null; display_name: string; enabled: boolean | number; id: number; jira_type_id: number }>(
@@ -119,9 +129,10 @@ export class SyncController {
       logger.debug(`SyncController: Database enabled types (raw): ${JSON.stringify(dbCheck.map(t => ({ id: t.id, displayName: t.display_name, typeName: t.type_name, hasTypeName: !!(t.type_name && t.type_name.trim() !== '') })))}`);
       
       // Check if AzureSubscription or similar is enabled but missing type_name
-      const matchingByDisplayName = dbCheck.filter(t => 
+      const typeNameLower = typeName.toLowerCase();
-        t.display_name.toLowerCase().includes(typeName.toLowerCase()) || 
+      const matchingByDisplayName = dbCheck.filter((t: { display_name: string }) => 
-        typeName.toLowerCase().includes(t.display_name.toLowerCase())
+        t.display_name.toLowerCase().includes(typeNameLower) || 
+        typeNameLower.includes(t.display_name.toLowerCase())
       );
       if (matchingByDisplayName.length > 0) {
         logger.warn(`SyncController: Found enabled type(s) matching "${typeName}" by display_name but not in enabled list:`, {
@@ -135,7 +146,7 @@ export class SyncController {
         });
       }
       
-      const type = enabledTypes.find(t => t && t.typeName === typeName);
+      const type = enabledTypes.find((t: { typeName?: string }) => t && t.typeName === typeName);
 
       if (!type) {
         // Check if type exists but is not enabled or has missing type_name
@@ -148,12 +159,13 @@ export class SyncController {
           logger.debug(`SyncController: Enabled types details: ${JSON.stringify(enabledTypes)}`);
           
           // Try to find it with different case (handle undefined typeName)
-          const caseInsensitiveMatch = enabledTypes.find(t => t && t.typeName && t.typeName.toLowerCase() === typeName.toLowerCase());
+          const typeNameLower = typeName.toLowerCase();
+          const caseInsensitiveMatch = enabledTypes.find((t: { typeName?: string }) => t && t.typeName && t.typeName.toLowerCase() === typeNameLower);
           if (caseInsensitiveMatch) {
             logger.warn(`SyncController: Found type with different case: "${caseInsensitiveMatch.typeName}" vs "${typeName}"`);
             // Use the found type with correct case
             const result = await services.objectSyncService.syncObjectType(
-              caseInsensitiveMatch.schemaId,
+              caseInsensitiveMatch.schemaId.toString(),
               caseInsensitiveMatch.objectTypeId,
               caseInsensitiveMatch.typeName,
               caseInsensitiveMatch.displayName
@@ -168,7 +180,7 @@ export class SyncController {
           }
           
           // Direct SQL query to verify enabled status and type_name
-          const db = services.schemaRepo.db;
+          const db = services.schemaRepo.getDatabaseAdapter();
           const isPostgres = db.isPostgres === true;
           const rawCheck = await db.queryOne<{ enabled: boolean | number; type_name: string | null; display_name: string }>(
             `SELECT enabled, type_name, display_name FROM object_types WHERE type_name = ?`,
@@ -183,7 +195,7 @@ export class SyncController {
           );
           
           // Get list of all enabled type names for better error message
-          const enabledTypeNames = enabledTypes.map(t => t.typeName).filter(Boolean);
+          const enabledTypeNames = enabledTypes.map((t: { typeName?: string }) => t.typeName).filter(Boolean) as string[];
           
           // Check if the issue is that the type is enabled but has a missing type_name
           if (rawCheck && (rawCheck.enabled === true || rawCheck.enabled === 1)) {
@@ -221,7 +233,7 @@ export class SyncController {
           });
         } else {
           // Type not found by type_name - check by display_name (case-insensitive)
-          const db = services.schemaRepo.db;
+          const db = services.schemaRepo.getDatabaseAdapter();
           const byDisplayName = await db.queryOne<{ enabled: boolean | number; type_name: string | null; display_name: string }>(
             `SELECT enabled, type_name, display_name FROM object_types WHERE display_name ILIKE ? LIMIT 1`,
             [`%${typeName}%`]
@@ -247,14 +259,14 @@ export class SyncController {
           
           res.status(400).json({
             success: false,
-            error: `Object type ${typeName} not found. Available enabled types: ${enabledTypes.map(t => t.typeName).join(', ') || 'none'}. Please run schema sync first.`,
+            error: `Object type ${typeName} not found. Available enabled types: ${enabledTypes.map((t: { typeName?: string }) => t.typeName).filter(Boolean).join(', ') || 'none'}. Please run schema sync first.`,
           });
         }
         return;
       }
 
       const result = await services.objectSyncService.syncObjectType(
-        type.schemaId,
+        type.schemaId.toString(),
         type.objectTypeId,
         type.typeName,
         type.displayName

backend/src/index.ts

@@ -249,7 +249,7 @@ app.listen(PORT, async () => {
     if (db) {
       await db.ensureInitialized?.();
       try {
-        const schemaRow = await db.queryOne<{ count: number }>(
+        const schemaRow = await (db as any).queryOne<{ count: number }>(
           `SELECT COUNT(*) as count FROM schemas`
         );
         hasSchemas = (schemaRow?.count || 0) > 0;

backend/src/repositories/SchemaRepository.ts

@@ -47,6 +47,13 @@ export interface AttributeRecord {
 
 export class SchemaRepository {
   constructor(private db: DatabaseAdapter) {}
+  
+  /**
+   * Get database adapter (for debug/advanced operations)
+   */
+  getDatabaseAdapter(): DatabaseAdapter {
+    return this.db;
+  }
 
   /**
    * Upsert a schema

backend/src/routes/schema.ts

@@ -98,7 +98,6 @@ router.post('/discover', requirePermission('manage_settings'), async (req, res)
     schemaCacheService.invalidate(); // Invalidate cache
     
     res.json({ 
-      success: result.success, 
       message: 'Schema synchronization completed',
       ...result,
     });

backend/src/routes/schemaConfiguration.ts

@@ -43,7 +43,6 @@ router.post('/discover', async (req: Request, res: Response) => {
     if (result.schemasProcessed === 0) {
       logger.warn('Schema configuration: Sync returned 0 schemas - this might indicate an API issue');
       res.status(400).json({
-        success: false,
         message: 'No schemas found. Please check: 1) JIRA_SERVICE_ACCOUNT_TOKEN is configured correctly, 2) Jira Assets API is accessible, 3) API endpoint /rest/assets/1.0/objectschema/list is available',
         ...result,
       });
@@ -51,7 +50,6 @@ router.post('/discover', async (req: Request, res: Response) => {
     }
     
     res.json({
-      success: result.success,
       message: 'Schema synchronization completed successfully',
       schemasDiscovered: result.schemasProcessed,
       objectTypesDiscovered: result.objectTypesProcessed,
@@ -88,7 +86,11 @@ router.get('/object-types', async (req: Request, res: Response) => {
  */
 router.patch('/object-types/:id/enabled', async (req: Request, res: Response) => {
   try {
-    const id = req.params.id;
+    const id = Array.isArray(req.params.id) ? req.params.id[0] : req.params.id;
+    if (!id) {
+      res.status(400).json({ error: 'id parameter required' });
+      return;
+    }
     const { enabled } = req.body;
 
     if (typeof enabled !== 'boolean') {
@@ -187,7 +189,12 @@ router.patch('/schemas/:schemaId/search-enabled', async (req: Request, res: Resp
       return;
     }
 
-    await schemaConfigurationService.setSchemaSearchEnabled(schemaId, searchEnabled);
+    const schemaIdStr = Array.isArray(schemaId) ? schemaId[0] : schemaId;
+    if (!schemaIdStr) {
+      res.status(400).json({ error: 'schemaId parameter required' });
+      return;
+    }
+    await schemaConfigurationService.setSchemaSearchEnabled(schemaIdStr, searchEnabled);
 
     res.json({
       status: 'success',

backend/src/services/SchemaSyncService.ts

@@ -132,7 +132,7 @@ export interface SyncProgress {
 // SchemaSyncService Implementation
 // =============================================================================
 
-class SchemaSyncService {
+export class SchemaSyncService {
   private db: DatabaseAdapter;
   private isPostgres: boolean;
   private baseUrl: string;
@@ -342,7 +342,7 @@ class SchemaSyncService {
 
     // CRITICAL: Jira sometimes returns type=1 (integer) for reference attributes!
     // The presence of referenceObjectTypeId is the true indicator of a reference type.
-    const refTypeId = attr.referenceObjectTypeId || attr.referenceObject?.id || attr.referenceType?.id;
+    const refTypeId = attr.referenceObjectTypeId || attr.referenceObjectType?.id || attr.referenceType?.id;
     if (refTypeId) {
       type = 'reference';
     }

backend/src/services/ServiceFactory.ts

@@ -40,7 +40,7 @@ export class ServiceFactory {
     this.cacheRepo = new ObjectCacheRepository(db);
 
     // Initialize services
-    this.schemaSyncService = new SchemaSyncService(this.schemaRepo);
+    this.schemaSyncService = new SchemaSyncService();
     this.objectSyncService = new ObjectSyncService(this.schemaRepo, this.cacheRepo);
     this.payloadProcessor = new PayloadProcessor(this.schemaRepo, this.cacheRepo);
     this.queryService = new QueryService(this.schemaRepo, this.cacheRepo);

backend/src/services/biaMatchingService.ts

@@ -105,8 +105,9 @@ export async function loadBIAData(): Promise<BIARecord[]> {
     // Read file using readFileSync and then parse with ExcelJS
     const fileBuffer = readFileSync(biaFilePath);
     const workbook = new ExcelJS.Workbook();
-    // ExcelJS accepts Buffer, but TypeScript types may be strict - use type assertion
+    // ExcelJS accepts Buffer, but TypeScript types may be strict
-    await workbook.xlsx.load(fileBuffer as Buffer);
+    // Use type assertion to satisfy TypeScript's strict Buffer type checking
+    await workbook.xlsx.load(fileBuffer as any);
     const worksheet = workbook.worksheets[0]; // First sheet
     
     // Converteer naar 2D array formaat (zoals xlsx.utils.sheet_to_json met header: 1)

backend/src/services/cmdbService.ts

@@ -98,7 +98,7 @@ class CMDBService {
       
       if (result.objects.length === 0) return null;
       
-      const parsed = jiraAssetsClient.parseObject<T>(result.objects[0]);
+      const parsed = await jiraAssetsClient.parseObject<T>(result.objects[0]);
       if (parsed) {
         await cacheStore.upsertObject(typeName, parsed);
         await cacheStore.extractAndStoreRelations(typeName, parsed);
@@ -212,7 +212,7 @@ class CMDBService {
       });
       
       const batchResults = await Promise.all(batchPromises);
-      const validResults = batchResults.filter((obj): obj is T => obj !== null);
+      const validResults = batchResults.filter((obj): obj is NonNullable<typeof obj> => obj !== null) as T[];
       results.push(...validResults);
     }
     

backend/src/services/database/migrate-to-normalized-schema.ts

@@ -11,6 +11,7 @@
 
 import { logger } from '../logger.js';
 import { normalizedCacheStore } from '../normalizedCacheStore.js';
+import type { DatabaseAdapter } from './interface.js';
 
 export async function migrateToNormalizedSchema(): Promise<void> {
   const db = (normalizedCacheStore as any).db;
@@ -23,7 +24,7 @@ export async function migrateToNormalizedSchema(): Promise<void> {
   logger.info('Migration: Starting migration to normalized schema structure...');
 
   try {
-    await db.transaction(async (txDb) => {
+    await db.transaction(async (txDb: DatabaseAdapter) => {
       // Step 1: Check if configured_object_types table exists
       let configuredTableExists = false;
       try {
@@ -172,14 +173,14 @@ export async function migrateToNormalizedSchema(): Promise<void> {
             FROM information_schema.columns
             WHERE table_schema = 'public' AND table_name = 'object_types'
           `);
-          hasSchemaId = columns.some(c => c.column_name === 'schema_id');
+          hasSchemaId = columns.some((c: { column_name: string }) => c.column_name === 'schema_id');
-          hasEnabled = columns.some(c => c.column_name === 'enabled');
+          hasEnabled = columns.some((c: { column_name: string }) => c.column_name === 'enabled');
         } else {
           const tableInfo = await txDb.query<{ name: string }>(`
             PRAGMA table_info(object_types)
           `);
-          hasSchemaId = tableInfo.some(c => c.name === 'schema_id');
+          hasSchemaId = tableInfo.some((c: { name: string }) => c.name === 'schema_id');
-          hasEnabled = tableInfo.some(c => c.name === 'enabled');
+          hasEnabled = tableInfo.some((c: { name: string }) => c.name === 'enabled');
         }
       } catch (error) {
         logger.warn('Migration: Could not check object_types columns', error);

backend/src/services/jiraAssets.ts

@@ -15,6 +15,7 @@ import type {
   ApplicationUpdateRequest,
   TeamDashboardData,
 } from '../types/index.js';
+import type { CMDBObjectTypeName } from '../generated/jira-types.js';
 
 // Attribute name mappings (these should match your Jira Assets schema)
 const ATTRIBUTE_NAMES = {
@@ -149,7 +150,7 @@ class JiraAssetsService {
         `SELECT DISTINCT jira_schema_id FROM schemas WHERE search_enabled = ? ORDER BY jira_schema_id`,
         [db.isPostgres ? true : 1]
       );
-      return schemaRows.map(row => row.jira_schema_id);
+      return schemaRows.map((row: { jira_schema_id: string }) => row.jira_schema_id);
     } catch (error) {
       logger.warn('JiraAssets: Failed to get all schema IDs', error);
       return [];

backend/src/services/normalizedCacheStore.ts

@@ -14,6 +14,7 @@ import { schemaDiscoveryService } from './schemaDiscoveryService.js';
 import { queryBuilder } from './queryBuilder.js';
 import { NORMALIZED_SCHEMA_POSTGRES, NORMALIZED_SCHEMA_SQLITE } from './database/normalized-schema.js';
 import type { AttributeDefinition } from '../generated/jira-schema.js';
+import { jiraAssetsClient } from './jiraAssetsClient.js';
 
 // Re-export interfaces for compatibility
 export interface CacheStats {
@@ -246,7 +247,7 @@ class NormalizedCacheStore {
         rows.map(row => this.reconstructObject<T>(row.id, typeName))
       );
 
-      const validObjects = objects.filter((obj): obj is T => obj !== null);
+      const validObjects = objects.filter((obj): obj is NonNullable<typeof obj> => obj !== null) as T[];
       logger.debug(`NormalizedCacheStore: Successfully reconstructed ${validObjects.length}/${rows.length} objects of type ${typeName}`);
       
       return validObjects;
@@ -294,7 +295,7 @@ class NormalizedCacheStore {
       rows.map(row => this.reconstructObject<T>(row.id, typeName))
     );
 
-    return objects.filter((obj): obj is T => obj !== null);
+    return objects.filter((obj): obj is NonNullable<typeof obj> => obj !== null) as T[];
   }
 
   /**
@@ -1129,8 +1130,9 @@ class NormalizedCacheStore {
     `, [id]);
 
     if (row) {
-      this.referenceCache.set(id, row);
+      const cached = { id: row.id, objectKey: row.object_key, label: row.label };
-      return row;
+      this.referenceCache.set(id, cached);
+      return cached;
     }
 
     return null;
@@ -1190,7 +1192,7 @@ class NormalizedCacheStore {
       );
 
       return {
-        objects: objects.filter((obj): obj is T => obj !== null),
+        objects: objects.filter((obj): obj is NonNullable<typeof obj> => obj !== null) as T[],
         total
       };
     } catch (error) {
@@ -1363,7 +1365,7 @@ class NormalizedCacheStore {
       rows.map(row => this.reconstructObject<T>(row.id, targetTypeName))
     );
 
-    return objects.filter((obj): obj is T => obj !== null);
+    return objects.filter((obj): obj is NonNullable<typeof obj> => obj !== null) as T[];
   }
 
   /**
@@ -1424,7 +1426,7 @@ class NormalizedCacheStore {
       rows.map(row => this.reconstructObject<T>(row.id, sourceTypeName))
     );
 
-    const validObjects = objects.filter((obj): obj is T => obj !== null);
+    const validObjects = objects.filter((obj): obj is NonNullable<typeof obj> => obj !== null) as T[];
     logger.debug(`NormalizedCacheStore: Successfully reconstructed ${validObjects.length} objects`);
     
     return validObjects;

backend/src/services/schemaMappingService.ts

@@ -73,7 +73,7 @@ class SchemaMappingService {
       ORDER BY object_type_name
     `);
 
-    return rows.map(row => ({
+    return rows.map((row: { object_type_name: string; schema_id: string; enabled: boolean | number; created_at: string; updated_at: string }) => ({
       objectTypeName: row.object_type_name,
       schemaId: row.schema_id,
       enabled: typeof row.enabled === 'boolean' ? row.enabled : row.enabled === 1,
@@ -283,7 +283,7 @@ class SchemaMappingService {
         logger.warn('SchemaMapping: Failed to get default schema ID from database', error);
       }
 
-      return rows.map(row => ({
+      return rows.map((row: { type_name: string; display_name: string; description: string | null; schema_id: string; enabled: boolean | number; created_at: string; updated_at: string }) => ({
         typeName: row.type_name,
         displayName: row.display_name,
         description: row.description,
@@ -291,8 +291,8 @@ class SchemaMappingService {
         enabled: row.enabled === null 
           ? true // Default: enabled if no mapping exists
           : (typeof row.enabled === 'boolean' ? row.enabled : row.enabled === 1),
-        objectCount: row.object_count,
+        objectCount: (row as any).object_count || 0,
-        syncPriority: row.sync_priority,
+        syncPriority: (row as any).sync_priority || 0,
       }));
     } catch (error) {
       logger.error('SchemaMappingService: Failed to get object types with config', error);