/**
 * @internal — not part of the public agentfootprint API. Imported only
 * by RunStepRecorder. Subject to change without notice.
 *
 * ActorArrowClassifier — classifies the next `llm.start` as
 * `'user→llm'` (no pending tool result) vs `'tool→llm'` (after a
 * tool result), and the next `llm.end` as `'llm→tool'` vs `'llm→user'`
 * based on the call's `toolCallCount`.
 *
 * Extracted from RunStepRecorder per Convention 1. Keeps a single
 * boolean of state — `prevLLMEndHadTools` — and consumes-then-resets
 * it on each `llm.start`.
 */
export type StartArrow = 'user→llm' | 'tool→llm';
export type EndArrow = 'llm→tool' | 'llm→user';
export declare class ActorArrowClassifier {
    private prevLLMEndHadTools;
    /** Classify the next `llm.start`. Consumes + resets the pending
     *  flag after returning. */
    classifyStart(): StartArrow;
    /** Classify an `llm.end` based on its tool-call count, and update
     *  the pending flag for the NEXT llm.start. */
    classifyEnd(toolCallCount: number): EndArrow;
    clear(): void;
}