/**
 * Sub-pixel tolerance around each edge. Scroll offsets within one pixel of
 * 0 or the maximum are treated as "at the edge" — browsers occasionally
 * report fractional offsets due to device-pixel rounding even when the
 * user perceives the content to be fully scrolled.
 */
export declare const SCROLL_EDGE_TOLERANCE_PX = 1;
/**
 * Maximum scroll offset available for the given scroll and client sizes.
 * Guards against negative values — when content is smaller than the
 * viewport, the max is 0, not a negative number.
 */
export declare function getMaxScrollOffset(scrollSize: number, clientSize: number): number;
/**
 * Clamps `value` into `[0, max]` and snaps to whichever edge is within
 * {@link SCROLL_EDGE_TOLERANCE_PX}. When both edges are within tolerance
 * (i.e. `max <= SCROLL_EDGE_TOLERANCE_PX`) the closer edge wins, with ties
 * going to the start.
 */
export declare function normalizeScrollOffset(value: number, max: number): number;
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