export declare const arrayToNested: ({ data, getIdHandler, getFkHandler, childAssignHandler, parentFkId, level, maxLevel, }: {
    data: any[];
    getIdHandler: (any: any) => string | null | undefined;
    getFkHandler: (any: any) => string | null | undefined;
    childAssignHandler: (row: any, children: any) => void;
    parentFkId?: string;
    level?: number;
    maxLevel?: number;
}) => any;
export declare const traverseNested: <T>(params: {
    nestedData: T[];
    getChildField: (row: T) => T[];
    onEach: (each: T) => void;
}) => void;