export default function _default(): {
    (root: any): any;
    separation(x: any, ...args: any[]): typeof defaultSeparation | any;
    size(x: any, ...args: any[]): any | number[];
    nodeSize(x: any, ...args: any[]): any | number[];
};
declare function defaultSeparation(a: any, b: any): 1 | 2;
export {};