import { EventEmitter } from "node:events";
import type { OutputMode, OutputEvent } from "../types.js";
export declare class OutputManager extends EventEmitter {
    private mode;
    constructor(mode?: OutputMode);
    /**
     * Detect output mode based on TTY status
     * If stdout is a TTY, use interactive mode
     * Otherwise (pipe, redirect, etc.), use JSON mode
     */
    static detectMode(): OutputMode;
    /**
     * Get the current output mode
     */
    getMode(): OutputMode;
    /**
     * Emit an output event
     * In JSON mode: writes to stdout as single-line JSON
     * In interactive mode: emits event for Ink components to handle
     */
    emitEvent(event: OutputEvent): void;
    /**
     * Emit a log event
     */
    emitLog(level: "debug" | "info" | "warn" | "error", message: string, args?: any[]): void;
    /**
     * Emit agent start event
     */
    emitAgentStart(agent: string, prompt: string): void;
    /**
     * Emit agent stream chunk
     * Forwards raw chunks from deepagents/LangGraph for client-side interpretation
     */
    emitAgentStream(chunk: any, tokenUsage?: {
        inputTokens: number;
        outputTokens: number;
        totalTokens: number;
    }, estimatedContextTokens?: number, thresholdTokens?: number): void;
    /**
     * Emit explicit context summarization start signal
     */
    emitContextSummarizing(): void;
    /**
     * Emit explicit context summarization signal
     */
    emitContextSummarized(payload: {
        inputTokens: number;
        peakInputTokens: number;
        thresholdTokens?: number;
    }): void;
    /**
     * Emit agent completion
     */
    emitAgentComplete(result: any): void;
    /**
     * Emit agent error
     */
    emitAgentError(error: Error | string): void;
}