/// <reference types="node" />
import { Market } from '@project-serum/serum';
import { Context } from '@solana/web3.js';
import { ReceivedCancelOrder, ReceivedNewOrder } from './types';
export declare class RequestQueueDataMapper {
    private readonly _symbol;
    private readonly _market;
    private _lastSeenRequestQueueHead;
    constructor(_symbol: string, _market: Market);
    map(requestQueueData: Buffer, context: Context, timestamp: Date): Generator<ReceivedCancelOrder | ReceivedNewOrder, void, unknown>;
    private _mapRequestItemToReceiveMessage;
    private _getNewlyAddedRequestQueueItems;
    private _decodeRequestQueue;
}
//# sourceMappingURL=data-mappers.d.ts.map