import { ComponentInternalInstance } from "vue";
export interface BaseParentProvider<C> {
    collect(childProvider: C): void;
    clear(childProvider: C): void;
}
export interface ChildrenCounter {
    collect(instance: ComponentInternalInstance): void;
    clear(instance: ComponentInternalInstance): void;
    instances: ComponentInternalInstance[];
}
export declare function useChildren<P, C>(key: symbol): {
    childProviders: C[];
    bindChildren: (parentProvider: P) => void;
};
export declare function useParent<P, C>(key: symbol): {
    parentProvider: Omit<P & BaseParentProvider<C>, "collect" | "clear">;
    bindParent: (childProvider: C) => void;
};
export declare function keyInProvides(key: symbol): boolean;
export declare const removeItem: (arr: Array<unknown>, item: unknown) => unknown[];
export declare function useAtParentIndex(key: symbol): {
    index: import("vue").ComputedRef<number>;
};