stack in error response made optional based on showStack

Author: dev-rashedin

README.md

@@ -11,6 +11,8 @@
 
 A lightweight, production-ready error handling toolkit for Express.js applications — written in TypeScript with full support for both CommonJS and ESM.
 
+If you like the project, please give the project a GitHub ⭐
+
 It provides:
 
 - Custom error classes (`NotFoundError`, `BadRequestError`, `ValidationError`, etc.)

src/global-error-handler.ts

@@ -7,7 +7,7 @@ export interface ErrorResponse {
   success: false;
   message: string;
   errorDetails?: string | object | null;
-  stack?: string;
+  stack?: string | string[];
 }
 
 export const globalErrorHandler = (
@@ -46,6 +46,13 @@ export const globalErrorHandler = (
     errorResponse.stack = stack;
   }
 
+  const isDev = process.env.NODE_ENV?.trim() === 'development';
+  const showStack = process.env.SHOW_STACK !== 'false'; 
+
+  if (isDev && stack && showStack) {
+    errorResponse.stack = stack.split('\n').map((line) => line.trim());;
+  }
+
   if (process.env.NODE_ENV === 'development') {
     console.error(err);
   }