/**
 * Span utility classes for Skillsmith Tracer
 * @module @skillsmith/core/telemetry/span-utils
 */
import type { Span, SpanAttributes, SpanWrapper } from './tracer-types.js';
/**
 * No-op span wrapper for when tracing is disabled
 */
export declare class NoOpSpanWrapper implements SpanWrapper {
    setAttributes(_attributes: SpanAttributes): void;
    setStatus(_code: 'ok' | 'error', _message?: string): void;
    recordException(_error: Error): void;
    addEvent(_name: string, _attributes?: SpanAttributes): void;
    end(): void;
    getSpan(): Span | null;
}
/**
 * Active span wrapper with real OTEL span
 */
export declare class ActiveSpanWrapper implements SpanWrapper {
    private span;
    constructor(span: Span);
    setAttributes(attributes: SpanAttributes): void;
    setStatus(code: 'ok' | 'error', message?: string): void;
    recordException(error: Error): void;
    addEvent(name: string, attributes?: SpanAttributes): void;
    end(): void;
    getSpan(): Span;
}
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