export declare function PlacementAction({ appId, payload, nudge, className, onPlaced }: {
    appId: string;
    /** Carried to the host's `onPin` mirror; the placement write needs only the id. */
    payload?: unknown;
    /** The affordance's invite state (`usePinNudge`) — the caller's, because only
     *  it knows whether the build on this surface just landed. */
    nudge?: string;
    /** An extra class for the bar this sits in (the stage pulls its own). */
    className?: string;
    /** Run once the app has a home. The stage closes the whole overlay on it, so
     *  the person lands back in the product looking at what they placed. */
    onPlaced?(): void;
}): import("react").JSX.Element | null;
export declare function AddToPicker({ appId, onPlaced }: {
    appId: string;
    onPlaced?(): void;
}): import("react").JSX.Element | null;