import { Message, Task } from "../types.js";
import { AgentExecutionEvent } from "../event/event_bus.js";
import { TaskStore } from "../store/task_store.js";
/**
 * Tracks state of the current task and synchronizes updates to Momento.
 * Handles task, status, artifact, and message events.
 */
export declare class ResultManager {
    private taskStore;
    private currentTask?;
    private latestUserMessage?;
    private finalMessageResult?;
    constructor(taskStore: TaskStore);
    /** Set the latest user message to track for history. */
    setContext(latestUserMessage: Message): void;
    /**
     * Handle an agent execution event and update the task accordingly.
     * Persists changes to Momento via TaskStore.
     */
    processEvent(event: AgentExecutionEvent): Promise<void>;
    /** Persist the current task to the task store. */
    private saveCurrentTask;
    /** Get the final result for the request: a Message (if one was sent), or the last Task. */
    getFinalResult(): Message | Task | undefined;
    /** Get the current in-flight task (if any). */
    getCurrentTask(): Task | undefined;
}
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