import { GatewayBond } from "../types";
import { INetClient } from "../net-client";
import { IQueryClient } from "../query-client";
/**
 * There are serious limits in smart contract systems, but we need to keep track of
 * potentially thousands of nodes. GatewaysCache instances repeatedly make requests for
 * paged data about what gateways exist, and keep them locally in memory so that they're
 * available for querying.
 **/
export default class GatewaysCache {
    gateways: GatewayBond[];
    client: INetClient | IQueryClient;
    perPage: number;
    constructor(client: INetClient | IQueryClient, perPage: number);
    refreshGateways(contractAddress: string): Promise<GatewayBond[]>;
    refreshValidatorAPIGateways(urls: string[]): Promise<GatewayBond[]>;
}