/**
 * Handles link prefetching in production builds.
 *
 * Modes:
 * - 'intent': Predicts navigation based on mouse trajectory (default)
 * - 'viewport': Prefetches links when they enter the viewport
 * - 'hover': Prefetches on mouseover
 * - 'false': Disabled
 */
export declare function getPrefetchableHref(anchor: HTMLAnchorElement, url: string): string | null;
export declare function PreloadLinks(): null;
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