interface NodeManagerProps {
    nodeUrls: string[];
    useStickyNode?: boolean;
    unavailableDuration?: number;
}
export declare class NetworkNode {
    url: string;
    availabilityDate: number;
    constructor(url: string);
    isAvailable(): boolean;
    makeUnavailable(duration: number): void;
    makeAvailable(): void;
}
export declare const createNodeManager: ({ nodeUrls, useStickyNode, unavailableDuration, }: NodeManagerProps) => {
    nodes: NetworkNode[];
    stickedNode: NetworkNode | null;
    useStickyNode: boolean;
    lastUsedNode: NetworkNode | null;
    getAvailableNodes(customRecoveryThreshold?: number): NetworkNode[];
    setStickyNode(node: NetworkNode): void;
    setUseStickyNode(useSticky: boolean): void;
    getNode(): NetworkNode | null;
    makeAllNodesAvailable(): void;
    makeNodeUnavailable(nodeUrl: string, duration?: number): void;
};
export type NodeManager = ReturnType<typeof createNodeManager>;
export {};