declare type GetterFunc<T> = (o: T) => number;
/**
 * 二分右侧查找
 * https://github.com/d3/d3-array/blob/master/src/bisector.js
 */
export default function <T>(getter: GetterFunc<T>): (a: T[], x: number, _lo?: number, _hi?: number) => number;
export {};