import type { TraceSink } from '../../trace/index.js';
export declare class TurnTrace {
    private readonly signal;
    private readonly traceWriter;
    private readonly provider;
    private interruptedAt;
    constructor(signal: AbortSignal, traceWriter: TraceSink | undefined, provider: 'anthropic-direct' | 'openai-compatible');
    private readonly onInterrupt;
    finish(turnElapsedMs: number): void;
}