export declare class SignatureError extends Error {
    signedMessage: string;
    account: string;
    signature: string;
    method: string;
    version: string;
    protected _dto: Record<string, string>;
    constructor(signedMessage: string, account: string, signature: string, method: string, version: string);
    getDto(): Record<string, unknown>;
}
export declare const networkErrorMessages: Set<string>;
export declare const knownErrorMessages: string[];
export declare const cancelMessages: Set<string>;
export declare function isNetworkError(error: unknown): boolean;
export declare function isUnknownError(error: unknown): boolean;
export declare function isCancelError(error: unknown): boolean;
export declare class CancelError extends Error {
    constructor(action?: string);
}