import type ReactReconciler from 'react-reconciler';
/** Flag type. */
export declare type Flag = '0' | '1';
/** Use this file as the only source for fibers. */
export declare type Fiber = ReactReconciler.Fiber;
/** The fiber of the item element. */
export interface ItemElementFiber extends Fiber {
    stateNode: HTMLElement;
}
/** The fibers between the Item provider and the item outer element. */
export interface ItemFiber extends Fiber {
    child: ItemFiber | ItemElementFiber;
    return: ItemFiber | ItemProviderFiber;
}
/** Item component fiber. */
export interface ItemProviderFiber extends Fiber {
    child: ItemFiber;
    return: ItemComponentFiber;
    alternate: ItemProviderFiber | null;
}
/** Item component fiber. */
export interface ItemComponentFiber extends Fiber {
    child: ItemProviderFiber;
    return: GridElementFiber;
    alternate: ItemComponentFiber | null;
    sibling: ItemComponentFiber | null;
}
/** Grid element fiber. */
export interface GridElementFiber extends Fiber {
    child: ItemComponentFiber | null;
    alternate: GridElementFiber | null;
}