export declare function seek<T, TData>(rootNodes: T | T[], goDown: (node: T, isInput: boolean, parentNode: T | undefined) => T[] | {
    nodes: T[];
    isInput: boolean;
} | undefined | false, goUp: (node: T, isInput: boolean, parentNode: T | undefined, childrenData: TData[]) => TData | undefined | false): TData[];