import { InjectionKey } from 'vue';
export interface LoadingBarApi {
    start: (from?: number, to?: number, status?: 'starting' | 'error') => Promise<void>;
    finish: () => Promise<void>;
    error: () => void;
}
export declare const loadingBarApiKey: InjectionKey<LoadingBarApi>;
export declare function useLoadingBar(): LoadingBarApi;