import { type RefObject } from 'react';
/**
 * Slides the composer from where it sat on the new-session landing to its
 * docked position in the freshly created session (shared-element style FLIP).
 */
export declare function useComposerHandoff(sessionId: string | undefined, elementRef: RefObject<HTMLElement | null>): void;
/**
 * Lifts the thread into place behind the docked composer so the just-sent
 * message reads as rising out of the input.
 */
export declare function useThreadHandoff(sessionId: string | undefined, elementRef: RefObject<HTMLElement | null>): void;
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