import { Segment } from "./types";
/**
 * Helper for adding segment to or updating last segment in array of segments
 * @param newSegment segment to add or replace
 * @param priorSegments array of all previous segments
 * @returns updated array of segments with new segment added or last segment updated (per options)
 */
export declare const addSegment: (newSegment: Segment, priorSegments: Array<Segment>) => Array<Segment>;