/**
 * Append-only transcript renderer for the non-interactive surface
 * (06-ONESHOT §2/§3).
 *
 * stdout carries the assistant answer and nothing else; every status, notice,
 * thinking row, tool card, diff, compaction row and spinner frame goes to
 * stderr. No cursor movement or erase sequence is ever written to stdout, so a
 * redirected run stays a correct transcript.
 */
import type { AgentEvent } from "../agent/events.js";
import type { TurnOutcome } from "../agent/turn-outcome.js";
import { type StreamVerbosity } from "./stream-blocks.js";
export interface StreamRendererOptions {
    readonly out: NodeJS.WritableStream;
    readonly err: NodeJS.WritableStream;
    readonly columns: number;
    readonly color: boolean;
    readonly unicode: boolean;
    readonly verbosity: StreamVerbosity;
    readonly showThinking: boolean;
}
export declare class StreamRenderer {
    private readonly options;
    private readonly clock;
    private readonly ctx;
    private readonly spinner;
    private readonly tools;
    private readonly startedAt;
    private label;
    private lastAnswer;
    private finished;
    constructor(options: StreamRendererOptions, clock?: () => number);
    handle(event: AgentEvent): void;
    /** Writes the rendered outcome to stdout exactly once and stops the spinner. */
    finish(outcome: TurnOutcome): void;
    private toolResultLines;
    private spin;
    private writeOut;
    private writeErr;
}