import type { Writable } from 'svelte/store';
export declare const FUI_BACKDROP_CONTEXT_KEY = "fui-context/backdrop";
export type BackdropContext = {
    dependencies: Set<string>;
    open: Writable<boolean>;
    openBackdrop: (id: string) => void;
    closeBackdrop: (is: string) => void;
};
export declare function getBackdropContext(): BackdropContext;
export declare function setBackdropContext(context: BackdropContext): BackdropContext;