/**
 * No-op Observability Adapter
 * Default adapter that does nothing - zero overhead when observability is disabled
 */
import type { ObservabilityAdapter, TraceContext, SpanContext, SpanKind, SpanStatus, AttributionContext } from '../types';
/**
 * No-op Observability Adapter
 *
 * This adapter does nothing and has zero overhead.
 * Used as the default when no observability is configured.
 */
export declare class NoopObservabilityAdapter implements ObservabilityAdapter {
    readonly name = "noop";
    readonly isEnabled = false;
    initialize(): Promise<void>;
    shutdown(): Promise<void>;
    startTrace(_name: string, _metadata?: Record<string, unknown>, _attribution?: AttributionContext): TraceContext;
    endTrace(_traceId: string, _status?: SpanStatus): void;
    startSpan(_traceId: string, _name: string, _kind: SpanKind, _parentId?: string): SpanContext;
    endSpan(_spanId: string, _status?: SpanStatus, _attributes?: Record<string, unknown>): void;
    addEvent(_spanId: string, _name: string, _attributes?: Record<string, unknown>): void;
    recordError(_spanId: string, _error: Error): void;
    flush(): Promise<void>;
}
export declare const noopAdapter: NoopObservabilityAdapter;