import type { AgentSpan, AgentTrace } from '../types/trace.js';
import { type TraceListWindow, type TraceStore } from './TraceStore.js';
export interface MemoryTraceStoreOptions {
    retentionMs?: number;
}
export declare class MemoryTraceStore implements TraceStore {
    private readonly options;
    private readonly spans;
    constructor(options?: MemoryTraceStoreOptions);
    write(span: AgentSpan): void;
    putSpan(span: AgentSpan): void;
    getTrace(traceId: string): Promise<AgentTrace | null>;
    listTraces(sessionId: string, window?: TraceListWindow): Promise<AgentTrace[]>;
    cleanup(maxAgeMs: number): Promise<number>;
    private cleanupSync;
}