import type { OrderBookId } from "../../shared";
import type { Trade } from "./index";
export declare class TradeHistory {
    readonly orderbookId: OrderBookId;
    private readonly maxSize;
    private readonly buffer;
    constructor(orderbookId: OrderBookId, maxSize: number);
    /**
     * Insert a trade in descending sequence order.
     *
     * Trades with `sequence > 0` are placed at the correct position so the
     * buffer stays sorted newest-first. Trades with `sequence === 0` (REST)
     * are prepended.
     */
    push(trade: Trade): void;
    replace(trades: Trade[]): void;
    trades(): readonly Trade[];
    latest(): Trade | undefined;
    clear(): void;
    len(): number;
    isEmpty(): boolean;
}
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