Transforming an Effect-Returning Function to a Simple Function

const getCredentials = Effect.fn(function*(userId){
  return yield* ...  
})

const make = Effect.fn(function*(userId) {
  const client = Client.initWithMiddleware({
    token: () => getCredentials(userId) // getCredentials return an Effect.Effect<string> but the `token` property expects a function that returns a string,
  })                                    // I can use Effect.runPromise(getCredentials(userId)) but that doesnt seem good to run an effect inside a "running effect"
  
...
})