import { ICacheBackend } from './types';
export declare type Strategy = 'api_first' | 'cache_first';
export declare type ErrorLevel = 'error' | 'warning';
export interface IDataWithCacheParams<T> {
    strategy: Strategy;
    cache: ICacheBackend;
    objectType: string;
    objectId: string;
    apiTimeout?: number;
    cacheTimeout?: number;
    cacheExpires?: number;
    debug?: boolean;
    getData: () => Promise<T>;
    onError?: (error: Error, level: ErrorLevel) => void;
}
export declare class DataWithCache<T> {
    params: IDataWithCacheParams<T>;
    onRefreshing?: () => void;
    onRefreshed?: (data: T) => any;
    private loading;
    constructor(params: IDataWithCacheParams<T>);
    getData(): Promise<T>;
    private apiFirst;
    private cacheFirst;
    private callGetData;
    private getFromCache;
    private setCache;
    private logError;
    private debug;
}