export declare class ValidationError extends Error {
    code: string;
    constructor(code: Readonly<string>, message: Readonly<string>);
}
export declare class NetworkError extends Error {
    code: string;
    constructor(code: Readonly<string>, message: Readonly<string>);
}
export declare class ApiError extends Error {
    code: string;
    constructor(code: Readonly<string>, message: Readonly<string>);
}
export declare class JsonParseError extends Error {
    code: string;
    constructor(message: Readonly<string>, originalError: any);
}