/**
 * Error codes enum for the eKYC SDK.
 * Helps consumers classify and handle errors accurately.
 */
export declare enum EkycErrorCode {
    /** Network error (no connection, timeout) */
    NETWORK_ERROR = "NETWORK_ERROR",
    /** Request timeout */
    TIMEOUT_ERROR = "TIMEOUT_ERROR",
    /** OCR extraction failed */
    OCR_FAILED = "OCR_FAILED",
    /** Liveness detection failed */
    LIVENESS_FAILED = "LIVENESS_FAILED",
    /** Face match failed */
    FACE_MATCH_FAILED = "FACE_MATCH_FAILED",
    /** Invalid SDK configuration */
    INVALID_CONFIG = "INVALID_CONFIG",
    /** Authentication failed (invalid API key) */
    AUTHENTICATION_FAILED = "AUTHENTICATION_FAILED",
    /** Invalid registrant configuration (wrong count or roles) */
    INVALID_REGISTRANTS = "INVALID_REGISTRANTS",
    /** Unknown error */
    UNKNOWN = "UNKNOWN"
}
/**
 * Custom Error class for the eKYC SDK.
 * Provides detailed error information including error code,
 * HTTP status code, and additional details.
 */
export declare class EkycError extends Error {
    /** Classified error code */
    readonly code: EkycErrorCode;
    /** HTTP status code (if available) */
    readonly statusCode?: number;
    /** Additional details from the API response */
    readonly details?: Record<string, unknown>;
    /** Timestamp when the error occurred */
    readonly timestamp: string;
    constructor(message: string, code: EkycErrorCode, statusCode?: number, details?: Record<string, unknown>);
    /**
     * Serialize the error to a plain object for logging or transmission.
     */
    toJSON(): Record<string, unknown>;
}
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