import type { DrawerMode } from "../../types";
/**
 * Animation lifecycle for Drawer mount / unmount.
 *
 * Open always mounts (or re-opens) in `mode: "closed"` so the panel starts off-screen
 * for its `position`. A follow-up `openVisual` after layout reflow flips to `"open"`
 * and the CSS transform transition plays the slide-in. `enterSettled` flips true only
 * after that enter transition ends — focus must wait until then, otherwise
 * `scrollIntoView` on an off-screen panel shoves the layout (gap + bounce on the right).
 */
export type DrawerAnimationState = {
    readonly shouldRender: boolean;
    readonly mode: DrawerMode;
    readonly enterSettled: boolean;
};
export type DrawerAnimationAction = {
    readonly type: "open";
} | {
    readonly type: "openVisual";
} | {
    readonly type: "close";
} | {
    readonly type: "transitionEnd";
};
export declare const INITIAL_DRAWER_ANIMATION_STATE: DrawerAnimationState;
/** Reducer managing the Drawer panel's mount / enter / exit animation lifecycle. */
export declare const drawerAnimationReducer: (state: DrawerAnimationState, action: DrawerAnimationAction) => DrawerAnimationState;