change in main to support validation error

src/main.ts

@@ -21,6 +21,7 @@ import {
   setPiiFields,
   AppException,
   fetchAllSecretsAndWriteEnv,
+  formatValidationErrors,
 } from 'nest-common-utilities';
 import { MicroserviceOptions, Transport } from '@nestjs/microservices';
 import { config } from './config/pii.config';
@@ -54,23 +55,12 @@ async function bootstrap(): Promise<void> {
 
   app.useGlobalPipes(
     new ValidationPipe({
-        whitelist: true, // strip unknown fields
-        forbidNonWhitelisted: true, // throw error on unknown fields
-        transform: true, // auto-transform payloads to DTOs
+      whitelist: true,
+      forbidNonWhitelisted: true,
+      transform: true,
       exceptionFactory: (errors) => {
-          const messages = errors.flatMap((err) =>
-            Object.values(err.constraints || {}).map((msg) => ({
-              key: err.property,
-              message: msg,
-            })),
-          );
-          const combinedMessage = messages.map((m) =>
-            `${m.key}: ${m.message}`,
-          ).join(', ');
-          return new AppException(
-              combinedMessage || 'Validation failed',
-              'VALIDATION_ERROR',
-          );
+        const formatted = formatValidationErrors(errors);
+        return new AppException(formatted || 'Validation failed', 979);
       },
     }),
   );
@@ -106,19 +96,8 @@ async function bootstrap(): Promise<void> {
       forbidNonWhitelisted: true, // throw error on unknown fields
       transform: true, // auto-transform payloads to DTOs
       exceptionFactory: (errors) => {
-          const messages = errors.flatMap((err) =>
-            Object.values(err.constraints || {}).map((msg) => ({
-              key: err.property,
-              message: msg,
-            })),
-          );
-          const combinedMessage = messages.map((m) =>
-            `${m.key}: ${m.message}`,
-          ).join(', ');
-          return new AppException(
-              combinedMessage || 'Validation failed',
-              'VALIDATION_ERROR',
-          );
+        const formatted = formatValidationErrors(errors);
+        return new AppException(formatted || 'Validation failed', 979);
       },
     }),
   );