declare const currentOtelSpan: Effect<Otel.Span, NoSuchElementException>

declare const make: Effect<EffectTracer, never, OtelTracer>

declare const makeExternalSpan: (options: {
  readonly traceId: string
  readonly spanId: string
  readonly traceFlags?: number | undefined
  readonly traceState?: string | Otel.TraceState | undefined
}) => ExternalSpan

declare const layer: Layer<OtelTracer, never, OtelTracerProvider | Resource>

declare const layerGlobal: Layer<OtelTracer, never, Resource>

declare const layerGlobalTracer: Layer<OtelTracer, never, Resource>

declare const layerTracer: Layer<OtelTracer, never, OtelTracerProvider | Resource>

declare const layerWithoutOtelTracer: Layer<never, never, OtelTracer>

declare const withSpanContext: {
  (spanContext: Otel.SpanContext): <A, E, R>(effect: Effect<A, E, R>) => Effect<A, E, Exclude<R, ParentSpan>>
  <A, E, R>(effect: Effect<A, E, R>, spanContext: Otel.SpanContext): Effect<A, E, Exclude<R, ParentSpan>>
}

declare const OtelTraceFlags: Tag<OtelTraceFlags, Otel.TraceFlags>

export interface OtelTraceFlags {
  readonly _: unique symbol
}

declare const OtelTraceState: Tag<OtelTraceState, Otel.TraceState>

export interface OtelTraceState {
  readonly _: unique symbol
}

declare const OtelTracer: Tag<OtelTracer, Otel.Tracer>

export interface OtelTracer {
  readonly _: unique symbol
}

declare const OtelTracerProvider: Tag<OtelTracerProvider, Otel.TracerProvider>

export interface OtelTracerProvider {
  readonly _: unique symbol
}