import { Clock } from './types';
import A from 'automerge';
/**
 * A vector clock is a map, where the keys are the actorIds of all actors that have been active on a
 * particular document, and the values are the most recent sequence number for that actor. The
 * sequence number starts at 1 and increments every time an actor makes a change.
 */
export declare const EMPTY_CLOCK: Clock;
/** Merges the clocks, keeping the maximum sequence number for each node */
export declare function mergeClocks(oldClock: Clock, newClock: Clock): Clock;
/** Returns true if there are any actors in clock1 that have more recent updates than in clock2 */
export declare const isMoreRecent: (clock1: Clock, clock2: Clock | undefined) => boolean;
export declare const getMissingChanges: (ourDoc: A.Doc<any>, theirClock: Clock) => A.Change[];
export declare const getClock: (doc: A.Doc<any>) => Clock;