export declare class IntelligentScrollDetector {
    private lastScrollTop;
    private lastTime;
    private velocityHistory;
    private readonly HISTORY_SIZE;
    private scrollTimeout;
    private isIdle;
    constructor();
    calculateVelocity(scrollTop: number): number;
    private getAverageVelocity;
    getDirection(velocity: number): 'up' | 'down' | 'stationary';
    calculateBuffer(velocity: number): number;
    calculatePrefetchDistance(velocity: number): number;
    predictPosition(currentPosition: number, velocity: number, msAhead?: number): number;
    getIsIdle(): boolean;
    private resetIdleTimer;
    cleanup(): void;
}
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