InvoiceExpress MCP

export class InvoiceExpressError extends Error { constructor( message: string, public code: string, public statusCode?: number, public details?: Record<string, unknown>, ) { super(message); this.name = 'InvoiceExpressError'; Error.captureStackTrace(this, this.constructor); } } export class ValidationError extends InvoiceExpressError { constructor(message: string, details?: Record<string, unknown>) { super(message, 'VALIDATION_ERROR', 400, details); this.name = 'ValidationError'; } } export class AuthenticationError extends InvoiceExpressError { constructor(message = 'Authentication failed') { super(message, 'AUTHENTICATION_ERROR', 401); this.name = 'AuthenticationError'; } } export class RateLimitError extends InvoiceExpressError { constructor(message = 'Rate limit exceeded', retryAfter?: number) { super(message, 'RATE_LIMIT_ERROR', 429, { retryAfter }); this.name = 'RateLimitError'; } } export class NotFoundError extends InvoiceExpressError { constructor(resource: string, id?: string) { const message = id ? `${resource} with id ${id} not found` : `${resource} not found`; super(message, 'NOT_FOUND_ERROR', 404); this.name = 'NotFoundError'; } } export function isInvoiceExpressError(error: unknown): error is InvoiceExpressError { return error instanceof InvoiceExpressError; }