import type { ExecutorTurnCompletion } from "../executor/types.js";
import type { captureWorkspaceBaseline, computeWorkspaceDiff } from "../graders/static/workspace-diff.js";
import type { TrajectoryTurnDiff } from "../trajectory/types.js";
export interface TurnDiffBaseline {
    gitDir?: string;
    ref?: string;
    captureError?: string;
}
export interface TurnDiffCaptureOptions {
    turnCount: number;
    stimulusName: string;
    workDir: string;
    getBaseline: () => TurnDiffBaseline;
    setRollingBaselineRef: (ref: string) => void;
    captureBaseline: typeof captureWorkspaceBaseline;
    computeDiff: typeof computeWorkspaceDiff;
}
/**
 * Serializes and records turn-scoped diffs while an executor advances through
 * a multi-turn stimulus. A bad completion makes later boundaries ambiguous, so
 * they are recorded as errors rather than diffed against a stale baseline.
 */
export declare class TurnDiffCapture {
    private readonly options;
    readonly records: TrajectoryTurnDiff[];
    private readonly capturedTurns;
    private nextTurnToCapture;
    private failure;
    private closed;
    private queue;
    constructor(options: TurnDiffCaptureOptions);
    capture(completion: ExecutorTurnCompletion): Promise<void>;
    closeAndDrain(): Promise<void>;
    recordMissingCompletions(): void;
    private append;
    private captureCompletion;
}
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