export declare class Wenku8Error extends Error {
    readonly code: string;
    constructor(message: string, code: string, options?: ErrorOptions);
}
export declare class ParseError extends Wenku8Error {
    constructor(message: string, options?: ErrorOptions);
}
export declare class IncompleteBookError extends Wenku8Error {
    readonly issues: string[];
    constructor(issues: string[]);
}
export declare class CopyrightUnavailableError extends Wenku8Error {
    readonly title: string;
    readonly url: string;
    constructor(title: string, url: string);
}
export declare class HttpStatusError extends Wenku8Error {
    readonly url: string;
    readonly status: number;
    constructor(url: string, status: number);
}
export declare class CloudflareChallengeError extends Wenku8Error {
    readonly url: string;
    constructor(url: string);
}
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