import type { DrawerSnapPoint } from './DrawerRootContext';
export interface ResolvedDrawerSnapPoint {
    value: DrawerSnapPoint;
    /**
     * How much of the popup is visible at this snap point, in pixels.
     */
    height: number;
    /**
     * How far the popup is pushed off the edge at this snap point, in pixels.
     * This is what the consumer translates by.
     */
    offset: number;
}
/**
 * Damps the swipe once the drag overshoots the fully-open edge (`nextOffset < 0`),
 * so the popup resists travelling past it instead of tearing off the screen.
 * Ported from upstream verbatim.
 */
export declare function getSnapPointSwipeMovement(baseOffset: number, movementValue: number): number;
/**
 * Turns a snap point into a visible height: a number `<= 1` is a fraction of the
 * viewport, anything larger is a pixel value.
 *
 * **Diverges from upstream:** it accepts `'148px'`/`'30rem'` strings too. React
 * Native styles are unitless numbers and it has no root font size, so a string
 * form would have nothing to resolve against — zest takes numbers only.
 */
export declare function resolveSnapPointHeight(snapPoint: DrawerSnapPoint, viewportHeight: number): number | null;
/** The index of the value closest to `target`, or `-1` when there are none. */
export declare function closestSnapPointIndex(values: number[], target: number): number;
export declare function resolveSnapPoints(snapPoints: readonly DrawerSnapPoint[] | undefined, popupHeight: number, viewportHeight: number): ResolvedDrawerSnapPoint[];
/**
 * Resolves the drawer's snap points against the measured popup and the window.
 *
 * Upstream measures the viewport element and watches it with a `ResizeObserver`.
 * React Native has `useWindowDimensions`, which already re-renders on rotation —
 * and a drawer's Modal is full-screen (`statusBarTranslucent`), so the window
 * *is* the viewport.
 */
export declare function useDrawerSnapPoints(): {
    snapPoints: readonly number[] | undefined;
    snapToSequentialPoints: boolean;
    activeSnapPoint: number | null | undefined;
    setActiveSnapPoint: (snapPoint: DrawerSnapPoint | null, eventDetails: import("./DrawerRoot").DrawerRoot.SnapPointChangeEventDetails) => void;
    resolvedSnapPoints: ResolvedDrawerSnapPoint[];
    activeSnapPointOffset: number | null;
    hasSnapPoints: boolean;
};
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