import { Block, GetOptions, IterOptions } from '@neo-one/client-common';
import { Monitor } from '@neo-one/monitor';
interface Client {
    readonly getBlockCount: (monitor?: Monitor) => Promise<number>;
    readonly getBlock: (index: number, options?: GetOptions) => Promise<Block>;
}
interface AsyncBlockIteratorOptions {
    readonly client: Client;
    readonly options: IterOptions;
    readonly fetchTimeoutMS?: number;
    readonly batchSize?: number;
}
export declare class AsyncBlockIterator implements AsyncIterator<Block> {
    private readonly client;
    private readonly mutableItems;
    private mutableResolvers;
    private mutableDone;
    private mutableCurrentIndex;
    private mutableFetching;
    private mutableStartHeight;
    private readonly indexStop;
    private readonly fetchTimeoutMS;
    private readonly batchSize;
    private readonly monitor;
    constructor({ client, options: { indexStart, indexStop, monitor }, fetchTimeoutMS, batchSize, }: AsyncBlockIteratorOptions);
    [Symbol.asyncIterator](): this;
    next(): Promise<IteratorResult<Block>>;
    private write;
    private error;
    private push;
    private done;
    private fetch;
    private asyncFetch;
    private fetchOne;
}
export {};