fix(filter): replaced isHttpException with instanceof

Author: ctfdavis

src/filters/formatted-exception.filter.ts

@@ -3,7 +3,6 @@ import { FormattedException } from '../types/formatted-exception.interface';
 import { Status } from '../types/status.enum';
 import { HttpAdapterHost, Reflector } from '@nestjs/core';
 import { FORMATTED_MESSAGE_METADATA } from '../constants';
-import { isHttpException } from '../utils/is-http-exception';
 
 @Catch()
 export class FormattedExceptionFilter<T> implements ExceptionFilter {
@@ -14,9 +13,9 @@ export class FormattedExceptionFilter<T> implements ExceptionFilter {
 
         const ctx = host.switchToHttp();
 
-        const code = isHttpException(exception) ? (exception as HttpException).getStatus() : HttpStatus.INTERNAL_SERVER_ERROR;
+        const code = exception instanceof HttpException ? (exception as HttpException).getStatus() : HttpStatus.INTERNAL_SERVER_ERROR;
 
-        const payload = isHttpException(exception) ? ((exception as HttpException).getResponse() as T) : null;
+        const payload = exception instanceof HttpException ? ((exception as HttpException).getResponse() as T) : null;
 
         const messages = exception instanceof Error ? this.reflector.get<string[]>(FORMATTED_MESSAGE_METADATA, exception.constructor) || (exception.message ? [exception.message] : []) : [];