import { ITransferItem } from './types';
export declare const filterLeftTransferItem: (dataSource: ITransferItem[], sourceKeys: string[]) => {
    leftData: ITransferItem[];
    rightData: ITransferItem[];
    leftKeys: string[];
    rightKeys: string[];
};
export declare const filterRightTransferItem: (dataSource: ITransferItem[], destinationKeys: string[]) => {
    leftData: ITransferItem[];
    rightData: ITransferItem[];
    leftKeys: string[];
    rightKeys: string[];
};
export declare const checkParamAndReturnValue: (param: string | [string, string]) => {
    leftString: string;
    rightString: string;
};
