import { Book } from './book';
import { Bookshelf } from './bookshelf';
export declare class GoodreadsBookshelf implements Bookshelf {
    private _bookshelfBuilder;
    private _bookshelf;
    constructor(id: string, key: string, version?: number, perPage?: number, page?: number);
    getBooks(): Promise<void>;
    readBooks(): Book[];
    readingBooks(): Book[];
    readBooksGroupedByYear(): {
        [key: number]: Book[];
    };
}