/**
 * Lightweight OTel adapter. Doesn't pull in `@opentelemetry/api` directly —
 * the user passes their already-initialized OTel Tracer through, and this
 * wrapper translates our minimal Span surface onto theirs.
 *
 * Usage:
 *   import { trace } from '@opentelemetry/api';
 *   const tracer = trace.getTracer('wrongstack', '1.0');
 *   const wrappedTracer = new OTelTracer(tracer);
 *   // pass `wrappedTracer` as Agent.tracer / ToolExecutor.tracer.
 *
 * The shape of the upstream Tracer is intentionally typed loosely so we
 * don't need a build-time dependency. Anything OTel-compatible works,
 * including OpenInference, Tempo, etc.
 */
import type { Span as WStackSpan, Tracer as WStackTracer } from '../types/observability.js';
interface OTelLikeSpan {
    setAttribute(key: string, value: string | number | boolean): unknown;
    recordException(err: {
        message: string;
        stack?: string | undefined;
        name?: string | undefined;
    }): unknown;
    setStatus?(status: {
        code: number;
        message?: string | undefined;
    }): unknown;
    end(): unknown;
}
interface OTelLikeTracer {
    startSpan(name: string, options?: {
        attributes?: Record<string, string | number | boolean>;
    }): OTelLikeSpan;
}
export declare class OTelTracer implements WStackTracer {
    private readonly upstream;
    constructor(upstream: OTelLikeTracer);
    startSpan(name: string, attrs?: Record<string, string | number | boolean>): WStackSpan;
}
export {};
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