import { FC } from 'react';
import { BreadcrumbList } from 'schema-dts';
import { DeferSeoProps } from '../types';
import { Overrides } from '../utils/shared-types';
export interface ItemListElements {
    /**
     * The URL to the webpage that represents the breadcrumb.
     *
     * @remarks
     *
     * There are two ways to specify item:
     *
     * URL: Specify the URL of the page. For example:
     *
     * @example
     * "https://example.com/books"
     */
    item: string;
    /**
     * The title of the breadcrumb displayed for the user.
     */
    name: string;
    /**
     * The position of the breadcrumb in the breadcrumb trail. Position 1
     * signifies the beginning of the trail.
     */
    position: number;
}
export interface BreadcrumbJsonLdProps extends DeferSeoProps, Overrides<BreadcrumbList> {
    /**
     * An array of breadcrumbs listed in a specific order. Specify each breadcrumb
     * with a ListItem For example:
     */
    itemListElements: ItemListElements[];
}
/**
 * A breadcrumb trail on a page indicates the page's position in the site
 * hierarchy. A user can navigate all the way up in the site hierarchy, one
 * level at a time, by starting from the last breadcrumb in the breadcrumb
 * trail.
 *
 * @remarks
 *
 * BreadCrumbJsonLd creates a
 * {@link https://schema.org/BreadcrumbList | BreadcrumbList} container item
 * that holds all elements in the list.
 *
 * ```jsx
 * import React from 'react';
 * import { BreadcrumbJsonLd } from 'gatsby-plugin-next-seo';
 *
 * export default () => (
 *   <>
 *    <h1>Breadcrumb JSON-LD</h1>
 *    <BreadcrumbJsonLd
 *      itemListElements={[
 *        {
 *          position: 1,
 *          name: 'Books',
 *          item: 'https://example.com/books',
 *        },
 *        {
 *          position: 2,
 *          name: 'Authors',
 *          item: 'https://example.com/books/authors',
 *        },
 *        {
 *          position: 3,
 *          name: 'Ann Leckie',
 *          item: 'https://example.com/books/authors/annleckie',
 *        },
 *        {
 *          position: 4,
 *          name: 'Ancillary Justice',
 *          item: 'https://example.com/books/authors/ancillaryjustice',
 *        },
 *      ]}
 *     />
 *   </>
 * );
 * ```
 * *
 */
export declare const BreadcrumbJsonLd: FC<BreadcrumbJsonLdProps>;
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