/**
 * Snapshot Testing - Like Jest snapshots for agent behavior
 */
import type { AgentTrace } from './types';
export interface SnapshotConfig {
    updateSnapshots: boolean;
    snapshotDir: string;
}
export interface BehaviorSnapshot {
    toolsCalled: string[];
    toolCallOrder: string[];
    hasOutput: boolean;
    stepCount: number;
    stepTypes: string[];
}
/**
 * Extract a behavior snapshot from a trace (structural, not exact content).
 */
export declare function extractSnapshot(trace: AgentTrace): BehaviorSnapshot;
/**
 * Compare or update a snapshot. Returns { match, diff? }.
 */
export declare function matchSnapshot(trace: AgentTrace, testName: string, config: SnapshotConfig): {
    match: boolean;
    diff?: string;
    created?: boolean;
    updated?: boolean;
};
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