import { NcRecord } from '../../../lib/ncTypes';
import AbstractColumnHelper, { SerializerOrParserFnProps } from '../column.interface';
export declare class UserHelper extends AbstractColumnHelper {
    columnDefaultMeta: {
        is_multi: boolean;
        notify: boolean;
    };
    serializeValue(value: any, params: SerializerOrParserFnProps['params']): string | null | NcRecord;
    parseValue(value: any): string | null;
    parsePlainCellValue(value: any): string;
}