interface Base64StoreConstructorProps {
    notClearKeys?: string[];
    passLocalStorageB64Key?: string;
    isBase64?: boolean;
}
declare class Base64Store {
    notClearKeys: string[];
    passLocalStorageB64Key: string;
    isBase64: boolean;
    constructor(props?: Base64StoreConstructorProps);
    get(key: string): any;
    remove(key: string): void;
    set(key: string, val: any): void;
    clear(): void;
    getKeys(): string[];
    clearAllExcept(item?: string | string[]): void;
    b64ToUtf8(str: string): any;
    utf8ToB64(str: string): string;
    isPass(): boolean;
}

export { Base64Store as default };