Why data don't push to array in zustand?

export const increaseItemQuantity = async (products: IProduct[], id: string,newProduct:IProduct): Promise<IProduct[]> => {
  try {
    const { data } = await supabase
      .from("products")
      .select("id, label, price, img_url")
      .eq("id", id);

    console.log("data - ",data)
      if (data === null) {
      return products;
    }

    console.log("newProduct 1 - ",newProduct)

    products = []

    newProduct = {
      id: data[0].id,
      label: data[0].label,
      price: data[0].price,
      img_url: data[0].img_url,
      quantity:1 //if data[0].id === id then quantity +1 else 1,
    }

    console.log("newProduct 2 - ",newProduct)
    console.log("[...products, newProduct] - ",[...products, newProduct])

    return [...products, newProduct];
  } catch (error) {
    console.error("increaseItemQuantity - ",error);
    return products; 
  }
}

const userCartStore = (set: any): UserCartStore => ({
 
  products: [],
  newProduct: { id:"",label: "", price: 0, img_url: "", quantity: 0 }, //it unused - so smth with it
   increaseItemQuantity(id:string) {
    set((state: UserCartStore) => ({
      ...state,
      products: increaseItemQuantity(state.products,id, state.newProduct),
      newProduct: { id:"",label: "", price: 0, img_url: "", quantity: 0 },
    }));
  },