Seeking Feedback on Effect-Next.js Example Repo with OpenTelemetry Tracing Integration

import { Resource, Tracer as OtelTracer } from "@effect/opentelemetry"
import { context as otelContext, trace } from "@opentelemetry/api"
import { Effect, Layer, Option, pipe, Schema, Tracer } from "effect"

export const makeTracer: Effect.Effect<Tracer.Tracer, never, never> = Effect.gen(function* () {
  const currentTracer = yield* Effect.tracer
  return Tracer.make({
    span(name, parent, context, links, startTime, kind) {
      const active = trace.getSpan(otelContext.active())
      const otelParent = active ? active.spanContext() : undefined

      // If there's an active OTel span (The Next.js one), use it as the external parent for Effect spans
      const externalParent = otelParent
        ? Option.some(
            Tracer.externalSpan({
              spanId: otelParent.spanId,
              traceId: otelParent.traceId,
              sampled: (otelParent.traceFlags & 1) === 1,
              context
            })
          )
        : Option.none()

      const effectiveParent = parent._tag === "Some" ? parent : externalParent

      const span = currentTracer.span(name, effectiveParent, context, links, startTime, kind)
      return span
    },
    context: currentTracer.context
  })
})

export const layerTracer: Layer.Layer<never, never, never> = pipe(
  makeTracer,
  Effect.map(Layer.setTracer),
  Layer.unwrapEffect
)

const tracerWithOtel = layerTracer.pipe(
  Layer.provide(
    OtelTracer.layerGlobal.pipe(
      Layer.provide(Resource.layer({ serviceName: "next-app" }))
    )
  )
);