declare type ErrorType = 'InvalidProvider' | 'UnexpectedWalletState' | 'Web3ProviderNotFound';
export declare class UlWeb3Error extends Error {
    errorType: ErrorType;
    constructor(message: string, errorType: ErrorType);
}
export declare class ValidationFailed extends UlWeb3Error {
    constructor(message: string, errorType: ErrorType);
}
export declare class InvalidProvider extends ValidationFailed {
    constructor(providerName: string);
}
export declare class Web3ProviderNotFound extends ValidationFailed {
    constructor();
}
export declare class UnexpectedWalletState extends ValidationFailed {
    constructor(walletState: string);
}
export {};
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