import { _ObjectId, _string } from '@alfercom/base-types';
export declare class ConversionsTools {
    static toObjectId(el: _string | _ObjectId): _ObjectId;
    static atob(value: string): string;
    static btoa(value: string): string;
    static punycodeEncode(value: string): string;
    static punycodeDecode(value: string): string;
    static punycodeAtob(value: string): string;
    static punycodeBtoa(value: string): string;
}