import { InjectionToken } from '@angular/core';
import { CacheItem } from './cache-item';
import { Storage } from './storage';
export interface Cache {
    readonly keys: string[];
    readonly storage: Storage | null | undefined;
    init(data?: {
        [key: string]: CacheItem;
    }): void;
    getItem(key: string): CacheItem | null | undefined;
    setItem(key: string, value: CacheItem): void;
    removeItem(key: string): void;
    clear(): void;
}
export declare const CACHE: InjectionToken<Cache>;