/**
 * @file Utility Functions for Capability Detection
 * @description Browser capability detection utilities (Fast Refresh compliant).
 */
/**
 * Detect browser capabilities
 */
export declare function detectCapabilities(): {
    esModules: boolean;
    asyncAwait: boolean;
    webGL: boolean;
    webGL2: boolean;
    webP: boolean;
    avif: boolean;
    serviceWorker: boolean;
    webWorker: boolean;
    sharedArrayBuffer: boolean;
    intersectionObserver: boolean;
    resizeObserver: boolean;
    cssGrid: boolean;
    containerQueries: boolean;
    cssHas: boolean;
    viewTransitions: boolean;
    navigationAPI: boolean;
    popoverAPI: boolean;
    webAnimations: boolean;
    idleCallback: boolean;
    intl: boolean;
};
/**
 * Check ES modules support
 */
export declare function hasESModules(): boolean;
/**
 * Check async/await support
 */
export declare function hasAsyncAwait(): boolean;
/**
 * Check WebGL support
 */
export declare function hasWebGL(): boolean;
/**
 * Check WebGL2 support
 */
export declare function hasWebGL2(): boolean;
/**
 * Check WebP support asynchronously
 */
export declare function checkWebPSupport(): Promise<boolean>;
/**
 * Check AVIF support asynchronously
 */
export declare function checkAVIFSupport(): Promise<boolean>;
/**
 * Detect if device is mobile
 */
export declare function isMobileDevice(): boolean;
/**
 * Detect if device is touch-enabled
 */
export declare function isTouchDevice(): boolean;
/**
 * Check if user prefers reduced motion
 */
export declare function prefersReducedMotion(): boolean;
/**
 * Check if user prefers dark mode
 */
export declare function prefersDarkMode(): boolean;
/**
 * Get device pixel ratio
 */
export declare function getDevicePixelRatio(): number;
/**
 * Check if browser is online
 */
export declare function isOnline(): boolean;
/**
 * Get connection type
 */
export declare function getConnectionType(): string;
/**
 * Check if browser supports given CSS property
 */
export declare function supportsCSSProperty(property: string, value: string): boolean;
/**
 * Check if browser supports given HTML feature
 */
export declare function supportsHTMLFeature(feature: string): boolean;