/**
 * Generate schema.org `Book` JSON-LD for use in page <script type="application/ld+json">.
 *
 * This helper accepts a compact `BookSchemaOptions` input and returns a
 * plain object ready to be stringified and inlined on a page. Common
 * fields supported:
 *
 * - `title` → maps to `name`
 * - `author` → accepts a `string`, an `{ name, url? }` object, or an array of
 *   those; these are formatted as `Person` objects
 * - `publisher` → `{ name, logo? }` formatted as an `Organization` with
 *   an optional `ImageObject` logo
 * - `image` → accepts a `string`, `BookImage` or arrays; non-string images are
 *   converted to `ImageObject` entries
 * - `url` → attached to `mainEntityOfPage.@id` when provided
 * - `keywords` → joined into a comma-separated string
 *
 * The implementation intentionally produces minimal output (only provided
 * fields are added) so the result can be safely merged into other page
 * metadata.
 *
 * @param options.book title, author, publisher and optional metadata
 * @returns A JSON-LD compatible `Book` object
 */
interface BookAuthor {
    name: string;
    url?: string;
}
interface BookImage {
    url: string;
    width?: number;
    height?: number;
}
interface BookPublisher {
    name: string;
    logo?: {
        url: string;
        width?: number;
        height?: number;
    };
}
interface BookSchemaOptions {
    title: string;
    author: string | BookAuthor | BookAuthor[];
    isbn?: string;
    numberOfPages?: number;
    inLanguage?: string;
    publisher: BookPublisher;
    datePublished?: string;
    image?: string | string[] | BookImage | BookImage[];
    description?: string;
    url?: string;
    keywords?: string[];
    bookFormat?: string;
}
declare const generateBookSchema: ({ title, author, isbn, numberOfPages, inLanguage, publisher, datePublished, image, description, url, keywords, bookFormat, }: BookSchemaOptions) => any;

export { generateBookSchema };