export type FrameWheelRoute = 'canvas' | 'native-preview' | 'programmatic-preview';
export interface ScrollMetrics {
    scrollLeft: number;
    scrollTop: number;
    scrollWidth: number;
    scrollHeight: number;
    clientWidth: number;
    clientHeight: number;
}
export declare function canConsumeWheelDelta(metrics: ScrollMetrics, deltaX: number, deltaY: number): boolean;
/**
 * Keeps a wheel gesture inside an active frame while its rendered DOM can
 * consume the requested delta. Once the inner scroller reaches its edge, the
 * same gesture falls back to the infinite canvas.
 */
export declare function routeFrameWheel(event: WheelEvent): FrameWheelRoute;