MCP Xcode

/** * Base domain error classes that ensure consistent error messages * Each domain object can extend these for type-safe, consistent errors */ export abstract class DomainError extends Error { constructor(message: string) { super(message); this.name = this.constructor.name; } } // Common validation error patterns with consistent messages export abstract class DomainEmptyError extends DomainError { constructor(fieldDisplayName: string) { super(`${fieldDisplayName} cannot be empty`); } } export abstract class DomainRequiredError extends DomainError { constructor(fieldDisplayName: string) { super(`${fieldDisplayName} is required`); } } export abstract class DomainInvalidTypeError extends DomainError { constructor(fieldDisplayName: string, expectedType: string) { super(`${fieldDisplayName} must be a ${expectedType}`); } } export abstract class DomainInvalidFormatError extends DomainError { // This one varies by context, so just pass the message constructor(message: string) { super(message); } }