export declare class UnsupportedChainError extends Error {
    name: string;
    constructor(chainId: number);
}
export declare class InvalidEmailError extends Error {
    name: string;
    constructor(email: string);
}
export declare class NotEnoughBalanceError extends Error {
    name: string;
    constructor(currentBalance: string, requiredBalance: string);
}
export declare class CardPurchaseAmountOutOfRangeError extends Error {
    name: string;
    constructor(minRange: string, maxRange: string);
}
export declare class DailyCardPurchaseLimitExceedError extends Error {
    name: string;
    constructor(dailyLimit: string, purchaseOfADay: string);
}
export declare class ValidationError extends Error {
    name: string;
    constructor(message: string);
}