import { VokoError } from './voko-error';
export declare class PaymentValidationError extends VokoError {
    constructor(message: string, field?: string);
}
export declare class PaymentDeclinedError extends VokoError {
    constructor(message: string, reason?: string);
}
export declare class InsufficientFundsError extends VokoError {
    constructor(message?: string);
}
export declare class NetworkError extends VokoError {
    constructor(message?: string);
}
export declare class AuthenticationError extends VokoError {
    constructor(message?: string);
}