/**
 * Cache for clickable elements by URL
 * Stores clickable elements discovered during navigation for quick filtering/searching
 */
export interface ClickableElement {
    type: 'link' | 'button' | 'text' | 'email' | 'password' | 'number' | 'tel' | 'url' | 'search' | 'textarea' | 'select' | 'checkbox' | 'radio' | 'file' | 'date' | 'other';
    text: string;
    href: string;
    selector: string;
    inViewport?: boolean;
    x?: number;
    y?: number;
    width?: number;
    height?: number;
    context?: string;
    label?: string;
    required?: boolean;
    visible?: boolean;
}
interface CacheEntry {
    url: string;
    elements: ClickableElement[];
    timestamp: number;
    viewportHeight: number;
    viewportWidth: number;
}
/**
 * Simple in-memory cache for clickable elements
 * Keys are normalized URL stubs (pathname + search, no protocol/host/hash)
 */
export declare class ClickableCache {
    private cache;
    private maxAge;
    /**
     * Normalize URL to cache key (host + pathname + search)
     * Includes host to prevent conflicts between different sites
     */
    private normalizeUrl;
    /**
     * Store clickable elements for a URL
     */
    set(url: string, elements: ClickableElement[], viewportHeight: number, viewportWidth: number): void;
    /**
     * Get cached clickable elements for a URL
     * Returns null if not cached or expired
     */
    get(url: string): CacheEntry | null;
    /**
     * Check if URL is cached and fresh
     */
    has(url: string): boolean;
    /**
     * Clear cache for a specific URL
     */
    delete(url: string): void;
    /**
     * Clear entire cache
     */
    clear(): void;
    /**
     * Get cache statistics
     */
    stats(): {
        size: number;
        entries: Array<{
            url: string;
            count: number;
            age: number;
        }>;
    };
}
export {};
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