import { InjectionKey, Ref } from 'vue';
export declare const FLOATING_LAYER_Z_INDEX: {
    readonly tooltip: 1070;
    readonly image: 1070;
    readonly select: 1050;
    readonly overlay: 1000;
    readonly message: 1030;
    readonly notification: 1040;
    readonly loadingBar: 9999;
};
export interface ZIndexManager {
    baseZIndex: number;
    allocate: (span?: number) => number;
    release: (slot: number) => void;
}
export declare function createZIndexManager(baseZIndex: number): ZIndexManager;
export declare const zIndexManagerKey: InjectionKey<ZIndexManager>;
export declare const zIndexContainerOpenKey: InjectionKey<Ref<boolean>>;
export declare function useContainerClose(onClose: () => void): void;
export interface UseZIndexOptions {
    allocateOnMount?: boolean;
}
export declare function useZIndex(fallback: number, span?: number, { allocateOnMount }?: UseZIndexOptions): {
    zIndex: Ref<number>;
    allocate: () => void;
    release: () => void;
};