/**
 * Finds a page element in the painter host by its page index.
 *
 * Searches through all elements with data-page-index attributes in the painter host
 * and returns the first element whose data-page-index matches the requested pageIndex.
 *
 * @param painterHost - The DOM container hosting the rendered pages
 * @param pageIndex - The zero-based index of the page to find
 * @returns The page element if found, null otherwise
 *
 * @remarks
 * - Returns null if painterHost is null
 * - Uses querySelectorAll with [data-page-index] to find all page elements
 * - Parses data-page-index attribute as base-10 integer for comparison
 * - Returns the first matching element (pages should have unique indices)
 */
export declare function getPageElementByIndex(painterHost: HTMLElement | null, pageIndex: number): HTMLElement | null;
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