import Iterator from "../base/Iterator";
import ShxRecord from "./ShxRecord";
import Optional from "../base/Optional";
import { FileStream } from 'ginkgoch-filestream';
import IQueryFilter from "../shared/IQueryFilter";
export default class ShxIterator extends Iterator<ShxRecord> {
    _stream: FileStream;
    _index: number;
    _filter: {
        from: number;
        limit: number;
        to: number;
    };
    constructor(fd: number, filter?: IQueryFilter);
    /**
     * @override
     */
    next(): Optional<ShxRecord>;
    private _readRecord;
}
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