import { HttpConfig } from "../types";
import { CacheManager, CacheManagerOption } from "./CacheManager";
export type IndexDbCacheManagerOption<T1 = any, T2 = any> = CacheManagerOption<T1, T2, IDBDatabase | string> & {
    maxSize?: number;
    storeName?: string;
};
export declare class IndexDbCacheManager<T> implements CacheManager<T> {
    private _usedSpace;
    private _availableSpace;
    private _connectionStatus;
    private _options;
    protected static instance: IndexDbCacheManager<any>;
    private _sizeTrackerKey;
    constructor(options?: IndexDbCacheManagerOption);
    static getInstance(options?: IndexDbCacheManagerOption): IndexDbCacheManager<any>;
    usedSpace(): Promise<number>;
    availableSpace(): Promise<number>;
    calculateSpace(configOrKey: string | HttpConfig, value: T): Promise<number>;
    has(configOrKey: string | HttpConfig): Promise<boolean>;
    get(configOrKey: string | HttpConfig): Promise<{
        date: Date;
        value: T;
    } | undefined>;
    getValue(configOrKey: string | HttpConfig): Promise<T | undefined>;
    set(configOrKey: string | HttpConfig, value: T): Promise<void>;
    remove(configOrKey: string | HttpConfig, resolve?: {
        exists: boolean;
        key: string;
    }): Promise<void>;
    clear(): Promise<void>;
    find(cond: (key: string) => boolean): Promise<string[]>;
    private _getEntryFromDb;
    private getEntryFromDb;
    private _putEntryInDb;
    private putEntryInDb;
    private setInstanceVariables;
    private _resolve;
}