import { type ReactNode } from "react";
/**
 * Freeze the mount-time gate for this subtree while publishing a separate live
 * gate to activity rails that need later appends to animate after a bulk paint.
 * MessageTimeline mounts one provider per durable group, so existing groups do
 * not receive a context invalidation when a prepend toggles bulk mode and new
 * groups still capture the value from the commit that created them.
 */
export declare function EntranceAnimationProvider({ value, liveValue, children, }: {
    value: boolean;
    liveValue?: boolean | undefined;
    children: ReactNode;
}): import("react").JSX.Element;
/**
 * Live entrance gate from the nearest provider. Prefer
 * {@link useEntranceAnimation} for elements that must freeze the decision at
 * mount; use this when a stable parent (e.g. ActivityRail) needs to animate
 * later appends after a bulk window clears.
 */
export declare function useEntranceAnimationLive(): boolean;
/**
 * Whether this element should wear the entrance animation. Captured at mount
 * from the nearest provider (true outside any provider) and stable for the
 * element's lifetime — see the module doctrine above.
 */
export declare function useEntranceAnimation(): boolean;