import { ClusterNode, ClusterOptions } from "ioredis";
import { StickyBucketService } from "@growthbook/growthbook";
import { Context } from "../../types";
export declare let stickyBucketService: (StickyBucketService & {
    connect: () => Promise<void>;
    onEvaluate?: () => Promise<void>;
}) | null;
export interface StickyBucketSettings {
    connectionUrl?: string;
    useCluster?: boolean;
    clusterRootNodesJSON?: ClusterNode[];
    clusterOptionsJSON?: ClusterOptions;
    ttl?: number;
}
export declare const initializeStickyBucketService: (context: Context) => Promise<void>;