import { ENR } from "../enr";
import { NodeCapabilityCount } from "./dns";
/**
 * Fetch nodes using passed [[getNode]] until all wanted capabilities are
 * fulfilled or the number of [[getNode]] call exceeds the sum of
 * [[wantedNodeCapabilityCount]] plus [[errorTolerance]].
 */
export declare function fetchNodesUntilCapabilitiesFulfilled(wantedNodeCapabilityCount: Partial<NodeCapabilityCount>, errorTolerance: number, getNode: () => Promise<ENR | null>): Promise<ENR[]>;
/**
 * Fetch nodes using passed [[getNode]] until all wanted capabilities are
 * fulfilled or the number of [[getNode]] call exceeds the sum of
 * [[wantedNodeCapabilityCount]] plus [[errorTolerance]].
 */
export declare function yieldNodesUntilCapabilitiesFulfilled(wantedNodeCapabilityCount: Partial<NodeCapabilityCount>, errorTolerance: number, getNode: () => Promise<ENR | null>): AsyncGenerator<ENR>;