/**
 * Builds the URL for fetching page-specific data JSON based on a normalized route.
 *
 * - For the root route (`"/"`), the URL is `/page-data/index/data.json`.
 * - For any other route, the URL follows `/page-data/<normalizedRoute>/data.json`.
 *
 * @param normalizedRoute - The normalized route path (e.g., "/", "/about", "/docs/intro").
 * @returns The constructed URL string pointing to the page data JSON file.
 *
 * @example
 * ```ts
 * getPageDataUrl('/');
 * // '/page-data/index/data.json'
 *
 * getPageDataUrl('/docs/intro');
 * // '/page-data/docs/intro/data.json'
 * ```
 */
export declare function getPageDataUrl(normalizedRoute: string): string;
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