import { DraggingDirection } from './position-calculator.type';
import { BottomSheetPosition, SnapPoints } from '../types/bottom-sheet-props.type';

/** It expects the bottom sheet to be open. */
export declare function convertDefaultPositionToYCoordinate(viewportHeight: number, containerHeight: number, marginTop: number, position: BottomSheetPosition): number;
export declare function calcDraggingDirection(startY: number, endY: number): DraggingDirection;
/**
 * @param startY- Point Y where the dragging started.
 * @param endY- Point Y where the dragging ended.
 * @returns ±number, which is the distance between startY and endY .
 */
export declare function calcOffset(startY: number, endY: number): number;
export declare function calcDiffOfHeight(leftHeight: number, rightHeight: number): number;
export declare function calcDirectionWithHeight(leftHeight: number, rightHeight: number): {
    isUp: boolean;
    isDown: boolean;
    stayedSame: boolean;
};
export declare function extractPoints(where: "above" | "below", container: {
    viewportHeight: number;
    visibleHeight: number;
}, points: SnapPoints): SnapPoints;
export declare function calcTopPointYLimit(viewportHeight: number, containerHeight: number, marginTop: number): number;
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