Failed to narrow error type in catch clause?

Question

typescript

async Furia(URL) {
    try {
      const Res = await fetch(URL);
      const Furia0= await Res.json();
      return Furia0;
    } catch (FuriaError) { //type FuriaError?
      return FuriaError;
    }
  }

What type should the FuriaError variable be?

Answer 1

the standard Error,
or the Error that is declared in the library you are using.