/// <reference types="node" />
import { Readable } from 'stream';
import { DocumentClient } from 'aws-sdk/clients/dynamodb';
import { AbstractDocumentSource } from './sources';
export declare class AbstractReader extends Readable {
    private source;
    constructor(source: AbstractDocumentSource);
    _read(size: number): void;
    onData(chunk: DocumentClient.QueryOutput): void;
    onEnd(): void;
}