/**
 * LiveStateRecorder — domain trackers built on the footprintjs
 * `BoundaryStateStore<TState>` storage primitive (v4.17.2+).
 *
 * **What this answers:** "Right now, mid-run, what's happening?"
 *
 *   - Is an LLM call in flight? What's the partial answer so far?
 *   - Is a tool executing? Which tool? What args?
 *   - Is the agent in a turn? Which turn index?
 *
 * All reads are O(1) — the trackers maintain incremental state via
 * the framework's bracket-scoped storage primitive. No event-log fold,
 * no walking arrays per render.
 *
 * **Mental model — observers vs. bookkeepers:**
 *
 *   `BoundaryStateStore<TState>` (footprintjs) = STORAGE shelf.
 *   `EventDispatcher.on(...)` (agentfootprint)  = OBSERVER source.
 *
 *   Each domain tracker (`LiveLLMTracker`, `LiveToolTracker`,
 *   `LiveAgentTurnTracker`) extends the storage shelf AND subscribes
 *   to the dispatcher. The composition `LiveStateRecorder` bundles
 *   all three so a consumer only attaches once.
 *
 * **Tier 1 (live) only.** Past states are not stored — when a boundary
 * closes, its transient state clears. For time-travel queries, snapshot
 * to a `SequenceStore<TState>` instead. See the BoundaryStateStore
 * JSDoc for the rationale.
 *
 * @example Use the bundled façade — one attach, three live views:
 *
 * ```typescript
 * import { LiveStateRecorder } from 'agentfootprint';
 *
 * const liveState = new LiveStateRecorder();
 * liveState.subscribe(runner);
 *
 * await runner.run({ input });
 *
 * // Read at any moment during the run (e.g., from another async task):
 * liveState.isLLMInFlight();          // true between llm_start ↔ llm_end
 * liveState.getPartialLLM();          // accumulated tokens so far
 * liveState.isToolExecuting();        // true between tool_start ↔ tool_end
 * liveState.isAgentInTurn();          // true between turn_start ↔ turn_end
 *
 * liveState.unsubscribe();
 * ```
 *
 * @example Use a single tracker directly when you only need one slice:
 *
 * ```typescript
 * import { LiveLLMTracker } from 'agentfootprint';
 *
 * const llm = new LiveLLMTracker();
 * llm.subscribe(runner);
 * await runner.run({ input });
 *
 * llm.isInFlight();                   // O(1)
 * llm.getLatestPartial();             // most recent active call's partial
 * llm.getActive(rid)?.tokens;         // tokens accumulated for one call
 * ```
 */
import type { Unsubscribe } from '../../events/dispatcher.js';
import type { AgentfootprintEvent, AgentfootprintEventType } from '../../events/registry.js';
/** Minimal Runner shape this recorder needs — only the public `on(...)`
 *  subscription method, so the same trackers can attach to a real Runner
 *  (Agent, etc.) OR to a test mock without exposing the protected
 *  internal dispatcher. */
export interface LiveStateRunnerLike {
    on<K extends AgentfootprintEventType>(type: K, listener: (event: Extract<AgentfootprintEvent, {
        type: K;
    }>) => void): Unsubscribe;
}
/** Live transient state of one in-flight LLM call. */
export interface LLMLiveState {
    /** Accumulated content from `stream.token` events since `llm_start`. */
    readonly partial: string;
    /** Number of tokens received so far. */
    readonly tokens: number;
    /** Iteration index (from the LLMStartPayload). */
    readonly iteration: number;
    /** Provider name (e.g., 'anthropic', 'openai'). */
    readonly provider: string;
    /** Model id. */
    readonly model: string;
    /** Wall-clock ms when llm_start fired. */
    readonly startedAtMs: number;
}
/** Live transient state of one in-flight tool call. */
export interface ToolLiveState {
    readonly toolName: string;
    readonly args: Readonly<Record<string, unknown>>;
    readonly toolCallId: string;
    readonly startedAtMs: number;
}
/** Live transient state of one in-flight agent turn. */
export interface AgentTurnLiveState {
    readonly turnIndex: number;
    readonly userPrompt: string;
    readonly startedAtMs: number;
}
/**
 * Tracks the in-flight state of LLM calls. Subscribes to:
 *   - `agentfootprint.stream.llm_start`  → opens a boundary
 *   - `agentfootprint.stream.token`      → appends to partial
 *   - `agentfootprint.stream.llm_end`    → closes the boundary
 *
 * Boundary key: `runtimeStageId` of the call-llm stage. Parallel LLM
 * calls (Parallel composition with multiple branches) get distinct
 * keys and are tracked independently.
 */
export declare class LiveLLMTracker {
    readonly id = "live-llm";
    /** Composition: bracket-scoped storage primitive. */
    private readonly store;
    /** Wipes the store when a fresh run reuses identical runtimeStageId keys. */
    private readonly runIdGuard;
    private observeRunId;
    /** Subscribe to a runner's dispatcher. Returns an Unsubscribe. */
    subscribe(runner: LiveStateRunnerLike): Unsubscribe;
    /** Reset all transient state. Called by `LiveStateRecorder.clear()`. */
    clear(): void;
    /** True if any LLM call is currently in flight. */
    isInFlight(): boolean;
    /** Same as `store.hasActive` — exposed for parity with the v4 API. */
    get hasActive(): boolean;
    /** Number of currently-active boundaries. */
    get activeCount(): number;
    /** Currently-active boundary state for one runtimeStageId. */
    getActive(runtimeStageId: string): LLMLiveState | undefined;
    /** All currently-active boundaries. */
    getAllActive(): ReadonlyMap<string, LLMLiveState>;
    /** Accumulated partial content of the MOST RECENTLY started active
     *  LLM call. Empty string when no call is active. Useful for the
     *  classic "Chatbot is responding: …" live commentary line. */
    getLatestPartial(): string;
}
/**
 * Tracks in-flight tool calls. Subscribes to:
 *   - `agentfootprint.stream.tool_start` → opens a boundary
 *   - `agentfootprint.stream.tool_end`   → closes the boundary
 *
 * Boundary key: `toolCallId` (more granular than `runtimeStageId` —
 * parallel tools share one calling stage but have distinct toolCallIds).
 */
export declare class LiveToolTracker {
    readonly id = "live-tool";
    private readonly store;
    private readonly runIdGuard;
    private observeRunId;
    subscribe(runner: LiveStateRunnerLike): Unsubscribe;
    clear(): void;
    /** True if any tool is currently executing. */
    isExecuting(): boolean;
    get hasActive(): boolean;
    get activeCount(): number;
    getActive(toolCallId: string): ToolLiveState | undefined;
    getAllActive(): ReadonlyMap<string, ToolLiveState>;
    /** Names of tools currently executing. Empty when none. */
    getExecutingToolNames(): readonly string[];
}
/**
 * Tracks in-flight agent turns. Subscribes to:
 *   - `agentfootprint.agent.turn_start` → opens a boundary
 *   - `agentfootprint.agent.turn_end`   → closes the boundary
 *
 * Boundary key: stringified `turnIndex` from the payload — survives
 * across runner instances because turnIndex resets per-session.
 */
export declare class LiveAgentTurnTracker {
    readonly id = "live-agent-turn";
    private readonly store;
    private readonly runIdGuard;
    private observeRunId;
    subscribe(runner: LiveStateRunnerLike): Unsubscribe;
    clear(): void;
    /** True if the agent is currently inside a turn. */
    isInTurn(): boolean;
    get hasActive(): boolean;
    get activeCount(): number;
    getActive(turnIndex: string): AgentTurnLiveState | undefined;
    getAllActive(): ReadonlyMap<string, AgentTurnLiveState>;
    /** Index of the most-recently started active turn (-1 if none). */
    getCurrentTurnIndex(): number;
}
/**
 * One-stop façade bundling `LiveLLMTracker` + `LiveToolTracker` +
 * `LiveAgentTurnTracker`. Consumers attach this once and get O(1)
 * reads across all three live-state slices.
 *
 * Use the bundled façade unless you ONLY need one slice — using a
 * single tracker directly avoids subscribing to events you don't read.
 *
 * **Lifecycle**: call `subscribe(runner)` to wire all three trackers,
 * then `unsubscribe()` to detach. `clear()` resets all transient state
 * across the three (called automatically by consumers like Lens between
 * runs).
 *
 * **What this is NOT for:**
 *   - Time-travel queries (Tier 1 only — live state)
 *   - Aggregations (use SequenceStore.aggregate)
 *   - Stage-level observation (use Recorder.onStageStart/End)
 *
 * **Composition over inheritance:** the façade does NOT extend
 * `BoundaryStateStore` itself — different boundary kinds need
 * separate active maps to avoid key collisions between LLM and tool
 * boundaries. Each sub-tracker keeps its own state.
 */
export declare class LiveStateRecorder {
    readonly id = "live-state";
    /** LLM call live state. */
    readonly llm: LiveLLMTracker;
    /** Tool execution live state. */
    readonly tool: LiveToolTracker;
    /** Agent turn live state. */
    readonly turn: LiveAgentTurnTracker;
    /** Active subscription disposer, if `subscribe()` is called. */
    private active;
    constructor();
    /** Subscribe all three trackers to one runner. Idempotent — calling
     *  twice on the same recorder unsubscribes the prior subscription
     *  first to avoid double-counting.
     *
     *  Adds a wildcard `*` listener that observes runId on EVERY event
     *  (regardless of which tracker subscribes to it) and calls
     *  `clear()` on all three trackers when the runId changes. This
     *  closes the gap where a tracker that never saw events in run 1
     *  would fail to reset in run 2. */
    subscribe(runner: LiveStateRunnerLike): Unsubscribe;
    /** Detach all three trackers from the current runner. Idempotent. */
    unsubscribe(): void;
    /** Reset transient state across all three trackers. Called by the
     *  executor / consumer between runs. */
    clear(): void;
    /** True if any LLM call is currently in flight. */
    isLLMInFlight(): boolean;
    /** Accumulated partial content of the most-recently started LLM call. */
    getPartialLLM(): string;
    /** True if any tool is currently executing. */
    isToolExecuting(): boolean;
    /** Names of tools currently executing. */
    getExecutingToolNames(): readonly string[];
    /** True if the agent is currently inside a turn. */
    isAgentInTurn(): boolean;
    /** Current turn index (-1 if not in a turn). */
    getCurrentTurnIndex(): number;
}
/** Convenience factory — same shape as `boundaryRecorder()` /
 *  `topologyRecorder()` / `inOutRecorder()` in footprintjs. */
export declare function liveStateRecorder(): LiveStateRecorder;