import type React from "react";
/**
 * Manage modal mount/unmount transitions and provide measured content dimensions.
 *
 * - Controls mount state via react-transition-state (timeout: 160ms).
 * - Locks body scroll when the modal is mounted and rendered outside the trigger.
 * - Measures content size (width/height) and exposes a CSS-friendly object for use by the modal.
 * - `resizeDependency` may be changed by callers (e.g. triggerResize()) to force a re-measure.
 *
 * The hook attempts to avoid transient zero-size measurements and keeps a short
 * "inTransition" window after content is attached so layout can settle before consumers
 * react to the new dimensions.
 */
export declare function useModalTransition({ open, positionInside, onClose, resizeDependency, }: {
    open: boolean;
    positionInside?: boolean;
    onClose?: () => void;
    /** When this value changes, the modal re-measures its content (e.g. from triggerResize()). */
    resizeDependency?: number;
}): {
    state: import("react-transition-state").TransitionState;
    mounted: boolean;
    rendered: boolean;
    inTransition: boolean;
    contentRef: (node: HTMLDivElement | null) => void;
    dimensionsCSS: React.CSSProperties;
};