MCP Time Server Node

/** * Custom error classes for MCP Time Server * * These provide meaningful error differentiation that the MCP SDK lacks. * Each error type maps to appropriate MCP ErrorCode in mapper.ts */ /** * Base error class for all time server errors */ export class BaseError extends Error { public code: string; public readonly status: number; public readonly details?: unknown; constructor(message: string, code: string, status: number, details?: unknown) { super(message); this.name = this.constructor.name; this.code = code; this.status = status; this.details = details; // Capture stack trace (excluding constructor) Error.captureStackTrace(this, this.constructor); } } /** * Error for validation failures (e.g., invalid input) * Maps to MCP ErrorCode.InvalidParams */ export class ValidationError extends BaseError { constructor(message: string, details?: unknown) { super(message, 'VALIDATION_ERROR', 400, details); } } /** * Error for invalid timezone specifications * Maps to MCP ErrorCode.InvalidParams */ export class TimezoneError extends BaseError { public readonly invalidTimezone?: string; constructor(message: string, invalidTimezone?: string) { super( message, 'TIMEZONE_ERROR', 400, invalidTimezone ? { timezone: invalidTimezone } : undefined ); this.invalidTimezone = invalidTimezone; } } /** * Error for date/time parsing failures * Maps to MCP ErrorCode.InvalidParams */ export class DateParsingError extends BaseError { constructor(message: string, details?: unknown) { super(message, 'DATE_PARSING_ERROR', 400, details); } } /** * Error for invalid business hours configuration * Maps to MCP ErrorCode.InvalidRequest */ export class BusinessHoursError extends BaseError { constructor(message: string, details?: unknown) { super(message, 'BUSINESS_HOURS_ERROR', 400, details); } } /** * Error when holiday data cannot be fetched or processed * Maps to MCP ErrorCode.InvalidRequest (external dependency issue) */ export class HolidayDataError extends BaseError { constructor(message: string, details?: unknown) { super(message, 'HOLIDAY_DATA_ERROR', 503, details); // Service unavailable } } /** * Error for time calculation failures (overflow, underflow, etc.) * Maps to MCP ErrorCode.InternalError */ export class TimeCalculationError extends BaseError { constructor(message: string, details?: unknown) { super(message, 'TIME_CALCULATION_ERROR', 500, details); } }