Add Global Error Handling Middleware for Consistent Error Responses

[ranjhayhero]

Add Global Error Handling Middleware for Consistent Error Responses

Description

Task

Add basic error handling middleware

Acceptance Criteria

• Global error middleware captures all unhandled errors
• Error responses have consistent JSON structure
• Development environments include error stack trace
• Production environments hide implementation details
• Custom errors support specific status codes

Summary of Work

Overview

This pull request implements a comprehensive global error handling middleware to provide consistent error responses across the API.

Key Changes

• Created errorHandler.ts middleware in src/middleware/
• Implemented AppError custom error class for more granular error handling
• Added environment-based error response with optional stack trace in development

Implementation Details

Error Handler Middleware

• Catches and processes unhandled errors
• Logs errors on the server-side
• Determines appropriate HTTP status code
• Provides a standardized error response format
• Conditionally includes stack trace in development environment

Custom AppError Class

• Allows throwing errors with custom status codes
• Extends built-in Error class
• Provides more context for error handling

Error Response Structure

{
  success: false,
  status: number,
  message: string,
  stack?: string // Only in development
}

Considerations

• Default to 500 Internal Server Error
• Preserve original status code when available
• Provide meaningful error messages
• Protect sensitive information in production

Changes Made

• Created src/middleware/errorHandler.ts
• Implemented AppError custom error class
• Added global error handling logic
• Implemented environment-based error response

Tests

• Verify error handler returns correct status code
• Confirm error response structure matches specification
• Validate stack trace appears only in development
• Ensure default 500 status code for unhandled errors
• Test custom AppError with specific status codes

Signatures

Staking Key

HUjFCWMEK2VxfsrCpayemKNcsvvevebHnM8xDRqPH6os: 3puBiJfK9NaQoJWP5agHvQo3GTbrZ5bPQv5EkUesZYJGxYY8JrJqy5Ehwf2rritBJdXPNZUkUR6A17fbrqhsTAb51pMDbeCCBSbTHLnj5QzP88bw3hqNC17U6UNEC4TZyP3N8PYqaw76JcpRBxqADHjcJGWmucZpBmF7PZ9LXVmdM7K22Xg5RfyiyNzYfTp8LdGbHhKzaWf5YwmvgBpCy2SqYsttKjC9TAJ78oXHnpACwGWQtsFgCNnJFriHDm8Z7uo7kCQ26cKa3ESyu1TXdk5M59QhswWxHuk59HhH7qi6gnwoKTUfhe8FZhPSBSmAVVbPeTGUaXTuSpLRFcpnKwJWQ3VmZgfewqLpDsJixMLHCQAxNpNdEcsD5Zd7tzRNBwVYewB4V1RG5BGtUCRN39ozb9CqL8wkjxC4

Public Key

21bw5w1jncJHRHNs2CwqSGC2JRdMVFPHx9F1nyMLQ61C: 2iDgdEedob7G1SkNvzzQdFie4Pj9Fd1EjXoaDeqAhMTHdBZqweJ1EUXtDycBRP8fJ34etg6mB6nduBtHXTEhoTyRSQFgjDPEq3jQJ2c4yYC3tXzH9yyRg26GzABnMto8U1z2fc1Bt5BfSvAjmWbLQSGTw3aiBEQcGB7TQsf3sXhpzBY6t5T4mm8oEJo3ACfUHfRh9JFjhwHYy7yEwrY7KZLfnwbSFR4qgLH6xHq3k7Vtd9jXAUPDodJAE6C782fedSB63RUokqDNEdTfeKC2ihEjCLdz168GsNtvwtrjtk5gcn8SFWwH9yBnppr5ikeJEoFxSTQ864swkAyxNgKFqNc3TPTLHaqvQwx4o7bMq9i9MLjNLzv4Rj7rqaZTkk1rqVSZQNZA2jSMHSqGQVxrQCsKbihYZBq9DoKJ