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import { RangeCov } from "./types";
export declare class RangeTree {
start: number;
end: number;
delta: number;
children: RangeTree[];
constructor(start: number, end: number, delta: number, children: RangeTree[]);
/**
* @precodition `ranges` are well-formed and pre-order sorted
*/
static fromSortedRanges(ranges: ReadonlyArray<RangeCov>): RangeTree | undefined;
normalize(): void;
/**
* @precondition `tree.start < value && value < tree.end`
* @return RangeTree Right part
*/
split(value: number): RangeTree;
/**
* Get the range coverages corresponding to the tree.
*
* The ranges are pre-order sorted.
*/
toRanges(): RangeCov[];
}