Function layer

packages/opentelemetry/src/WebSdk.ts:70–101

(
  evaluate: LazyArg<Configuration> | Effect.Effect<Configuration, any, any>
)

  (evaluate: LazyArg<Configuration>): Layer.Layer<Resource.Resource>
  <E, R>(evaluate: Effect.Effect<Configuration, E, R>): Layer.Layer<Resource.Resource, E, R>
} = (
  evaluate: LazyArg<Configuration> | Effect.Effect<Configuration, any, any>
): Layer.Layer<Resource.Resource> =>
  Layer.unwrapEffect(
    Effect.map(
      Effect.isEffect(evaluate)
        ? evaluate as Effect.Effect<Configuration>
        : Effect.sync(evaluate),
      (config) => {
        const ResourceLive = Resource.layer(config.resource)

        const TracerLive = isNonEmpty(config.spanProcessor)
          ? Layer.provide(Tracer.layer, layerTracerProvider(config.spanProcessor, config.tracerConfig))
          : Layer.empty

        const LoggerLive = isNonEmpty(config.logRecordProcessor)
          ? Layer.provide(
            Logger.layerLoggerAdd,
            Logger.layerLoggerProvider(config.logRecordProcessor, config.loggerProviderConfig)
          )
          : Layer.empty

        const MetricsLive = isNonEmpty(config.metricReader)
          ? Metrics.layer(constant(config.metricReader))
          : Layer.empty

        return Layer.mergeAll(TracerLive, MetricsLive, LoggerLive).pipe(
          Layer.provideMerge(ResourceLive)
        )
      }
    )
  )