我是新来的typescript。这里我有两个接口

interface TestProduct {
  Id: string
  active: boolean
}

interface Product {
  Id?: string
  Name?: string
  Original: TestProduct
}

interface MainProduct {
  Id?: string
  Name?: string
  Original?: Product
}

在这里，所以，我试图同时拥有这两个值，

type Total = MainProduct | Product

现在，当我在我的一个函数方法中使用它时，

getproducts = memoize(
    (products: Array<Product>, isopen) => {
    //did some group by and got one array of object.

   const groupedValues = !isopen  ?  _.groupBy(
    products,
    (bsp: Product) => bsp?.Original?.active?.Name ?? 'Undefined'
  ) :  _.groupBy(
    buyingSessionProducts,
    (bsp: MainProduct) => bsp?.Original?.Original?.active?.Name ?? 'Undefined'
  )


   for (let value in groupedValues) {
    const sort = groupedValues[value][0].original?. //here I am able to get only Id value as it is common in both the interface. So, I am not getting either original?.active or direct original?.original?.active.
}
})

那么，我如何获得两个接口的关键值。谢谢。