/**
 * Custom error types for the gov-deals package
 */
/**
 * Base error class for all gov-deals errors
 */
export declare class GovDealsError extends Error {
    readonly code: string;
    readonly details?: Record<string, unknown> | undefined;
    constructor(message: string, code: string, details?: Record<string, unknown> | undefined);
}
/**
 * Configuration error
 */
export declare class ConfigurationError extends GovDealsError {
    constructor(message: string, details?: Record<string, unknown>);
}
/**
 * Authentication error for API requests
 */
export declare class AuthenticationError extends GovDealsError {
    constructor(message: string, details?: Record<string, unknown>);
}
/**
 * API request error
 */
export declare class ApiError extends GovDealsError {
    readonly statusCode?: number | undefined;
    readonly response?: unknown;
    constructor(message: string, statusCode?: number | undefined, response?: unknown, details?: Record<string, unknown>);
}
/**
 * Rate limit error
 */
export declare class RateLimitError extends ApiError {
    readonly retryAfter?: number | undefined;
    constructor(message: string, retryAfter?: number | undefined, details?: Record<string, unknown>);
}
/**
 * Validation error for data validation failures
 */
export declare class ValidationError extends GovDealsError {
    readonly validationErrors?: unknown;
    constructor(message: string, validationErrors?: unknown, details?: Record<string, unknown>);
}
/**
 * Network error for connection issues
 */
export declare class NetworkError extends GovDealsError {
    readonly originalError?: Error | undefined;
    constructor(message: string, originalError?: Error | undefined, details?: Record<string, unknown>);
}
/**
 * Timeout error
 */
export declare class TimeoutError extends NetworkError {
    constructor(message: string, details?: Record<string, unknown>);
}
/**
 * Check if an error is a gov-deals error
 */
export declare function isGovDealsError(error: unknown): error is GovDealsError;
/**
 * Check if an error is a rate limit error
 */
export declare function isRateLimitError(error: unknown): error is RateLimitError;
/**
 * Check if an error is retryable
 */
export declare function isRetryableError(error: unknown): boolean;