import { GraphSnapshot } from './GraphSnapshot';
import { OptimisticUpdateQueue } from './OptimisticUpdateQueue';
/**
 * Maintains an immutable, point-in-time view of the cache.
 *
 * We make CacheSnapshot a class instead of an interface because
 * to garuntee consistentcy of properties and their order. This
 * improves performance as JavaScript VM can do better optimization.
 */
export declare class CacheSnapshot {
    /** The base snapshot for this version of the cache. */
    baseline: GraphSnapshot;
    /** The optimistic view of this version of this cache (may be base). */
    optimistic: GraphSnapshot;
    /** Individual optimistic updates for this version. */
    optimisticQueue: OptimisticUpdateQueue;
    constructor(
    /** The base snapshot for this version of the cache. */
    baseline: GraphSnapshot, 
    /** The optimistic view of this version of this cache (may be base). */
    optimistic: GraphSnapshot, 
    /** Individual optimistic updates for this version. */
    optimisticQueue: OptimisticUpdateQueue);
}