import { ClsService } from 'nestjs-cls';
import { ProfilerCoreService } from './profiler-core.service.js';
import { TraceSpanDelegate } from '../trace/trace-span.delegate.js';
import type { SummaryPrimitive } from '../storage/profile-summary.js';
export declare class TracerService {
    private readonly cls?;
    private readonly core?;
    constructor(cls?: ClsService | undefined, core?: ProfilerCoreService | undefined);
    span<T>(name: string, work: (span: TraceSpanDelegate) => T): T;
    startSpan(name: string): TraceSpanDelegate;
    activeSpan(): TraceSpanDelegate;
    captureError(error: unknown, tags?: Record<string, string | number | boolean>): void;
    setAttribute(key: string, value: SummaryPrimitive): void;
    getAttribute(key: string): SummaryPrimitive | undefined;
    currentToken(): string | undefined;
    currentTraceId(): string | undefined;
    flush(): Promise<void>;
    private profile;
}