Initial commit

backend-node/shared/errors/AppError.js

@@ -0,0 +1,11 @@
+class AppError extends Error {
+  constructor(message, statusCode, isOperational = true, errors = null) {
+    super(message);
+    this.statusCode = statusCode;
+    this.isOperational = isOperational;
+    this.errors = errors;
+    Error.captureStackTrace(this, this.constructor);
+  }
+}
+
+module.exports = AppError;

backend-node/shared/errors/index.js

@@ -0,0 +1,55 @@
+const AppError = require('./AppError');
+const config = require('../../config');
+
+class ValidationError extends AppError {
+  constructor(message, errors = null) {
+    super(message, config.HTTP_STATUS.BAD_REQUEST, true, errors);
+    this.name = 'ValidationError';
+  }
+}
+
+class NotFoundError extends AppError {
+  constructor(message = 'Resource not found') {
+    super(message, config.HTTP_STATUS.NOT_FOUND, true);
+    this.name = 'NotFoundError';
+  }
+}
+
+class ConflictError extends AppError {
+  constructor(message, errors = null) {
+    super(message, config.HTTP_STATUS.CONFLICT, true, errors);
+    this.name = 'ConflictError';
+  }
+}
+
+class UnauthorizedError extends AppError {
+  constructor(message = 'Unauthorized') {
+    super(message, config.HTTP_STATUS.UNAUTHORIZED, true);
+    this.name = 'UnauthorizedError';
+  }
+}
+
+class ForbiddenError extends AppError {
+  constructor(message = 'Forbidden') {
+    super(message, config.HTTP_STATUS.FORBIDDEN, true);
+    this.name = 'ForbiddenError';
+  }
+}
+
+class DatabaseError extends AppError {
+  constructor(message = 'Database operation failed', originalError = null) {
+    super(message, config.HTTP_STATUS.INTERNAL_SERVER_ERROR, false);
+    this.name = 'DatabaseError';
+    this.originalError = originalError;
+  }
+}
+
+module.exports = {
+  AppError,
+  ValidationError,
+  NotFoundError,
+  ConflictError,
+  UnauthorizedError,
+  ForbiddenError,
+  DatabaseError,
+};