Creating Runtime-Dependent Layers in Cloudflare Workers

async fetch(request, env) {
  await env.DB.exec(...);
}

export class WorkerEnv extends Context.Tag("WorkerEnv")<
  WorkerEnv,
  { getBinding: <T>(key: string, type: T) => T }
>() {
  static Live = (env: unknown) =>
    Layer.effect(
      this,
      E.succeed({
        // TODO: parse and validate
        getBinding: <T>(key: string): T => env[key] as T
      }),
    )
}

const D1Live = D1Client.layer({
  // error below at `db`: Property '[ConfigTypeId]' is missing in type 'Effect<any, never, WorkerEnv>' but required in type 'Config<D1Database>'
  db: Effect.gen(function* () {
    const env = yield* WorkerEnv
    return env.getBinding<D1Database>("DB")
  }),
})
export const DatabaseLive = SqliteDrizzle.layer.pipe(Layer.provide(D1Live))