import { type ReactNode } from "react";
/**
 * The ENG-205 render-slot morph, finally wired: a persistent wrapper that a
 * placeholder and its replacing view share, so content changes MORPH instead
 * of popping. When `stateKey` changes, the outgoing subtree is kept for one
 * beat in an absolutely-positioned exit layer (fading, blurring) while the
 * incoming subtree rises in underneath it. Reduced motion is handled by the
 * chrome root attribute rule, which disables all animation wholesale.
 */
export declare function FluidReveal({ stateKey, children, className, initialExit, }: {
    /** Identity of the current content; a change triggers the morph. */
    stateKey: string;
    children: ReactNode;
    className?: string;
    /**
     * Content to morph FROM on first mount — for wrappers that appear at the
     * same instant the content they replace unmounts elsewhere (a slot taking
     * over from the host's own inline markup).
     */
    initialExit?: ReactNode;
}): import("react").JSX.Element;