import { Interval } from './interval';
/**
 * Binary tree to find all intervals that overlaps with the given interval efficiently.
 */
export declare class IntervalNode {
    private medianPoint;
    private intervals;
    private left;
    private right;
    /**
     *
     * @param intervals intervals, note that they should be sorted by size decending.
     */
    constructor(intervals: Interval[]);
    /**
     * Find all intervals overlap with the given interval.
     *
     * @param interval - the interval object to find its overlaps.
     */
    findOverlaps(interval: Interval): Interval[];
    /**
     * Find the intervals that overlaps with the given interval (which never contains median point)
     * from the intervals of this node (which always contains median point).
     *                                  median
     *                ---------------------o---------------------
     * given interval ------[xxxxxxx]--------------[xxxxx]-------
     * current        ------------[xxxxxxxxxxxxxxxxxxx]----------
     *
     * @param interval - the interval to find its overlaps.
     * @param direction - the direction to search for.
     */
    private checkForOverlaps;
    /**
     * Find a median point from left most start and right most ends.
     *
     * @param intervals
     */
    private determineMedian;
}