backend/src/shared/errors/AppError.js

export class AppError extends Error {
  constructor(message, statusCode) {
    super(message);
    this.statusCode = statusCode;
  }
}

export class NotFoundError extends AppError {
  constructor(message = "Not Found") {
    super(message, 404);
  }
}

export class UnauthorizedError extends AppError {
  constructor(message = "Unauthorized") {
    super(message, 401);
  }
}

export class BadRequestError extends AppError {
  constructor(message = "Bad Request") {
    super(message, 400);
  }
}

export class InternalServerError extends AppError {
  constructor(message = "Internal Server Error") {
    super(message, 500);
  }
}