import type { ExternalToast } from "sonner";
/**
 * Error handling utilities for the Courier Designer
 */
export interface TemplateError {
    /** Human-readable error message */
    message: string;
    /** Optional toast configuration (duration, action, description, etc.) */
    toastProps?: ExternalToast;
}
/**
 * Creates a custom error (for use in override functions)
 */
export declare const createCustomError: (message: string, toastProps?: ExternalToast) => TemplateError;
/**
 * Checks if an error has a retry action configured
 */
export declare const isRetryableError: (error: TemplateError) => boolean;
/**
 * Extracts error message from various error formats for backward compatibility
 */
export declare const extractErrorMessage: (error: unknown) => string;
/**
 * Converts a legacy string error to a TemplateError
 */
export declare const convertLegacyError: (error: string | TemplateError) => TemplateError;