export interface Range {
    from: number;
    to: number;
}
/**
 * Walk a set of ranges, and callback for each contiguous overlapping chunk of ranges.
 *
 * @param ranges Array of ranges, sorted by `from`
 * @param callback
 */
export declare function walk<T extends Range>(ranges: ReadonlyArray<T>, callback: (range: Readonly<Range>, active: ReadonlyArray<T>) => void): void;