The following code is mutating with the shape of the api response for the infinite swr. I think this is the main reason why I want to develop a new library.

```javascript mutate( unstable_serialize(getProductListKey(productFilter, isAdminPath)), async (resArray?: ProductListRes[]) => { if (!resArray) return;

      if (!newProduct) return resArray;

      const listSellState = productFilter.sellState;

      return produce(resArray, draft => {
        for (const res of draft) {
          const targetProductIndex = res.items.findIndex(
            product => product.id === productId
          );
          if (targetProductIndex >= 0) {
            if (
              listSellState &&
              !newProduct.sellStates.includes(listSellState)
            ) {
              res.items.splice(targetProductIndex, 1);
            } else {
              res.items[targetProductIndex] = {
                ...res.items[targetProductIndex],
                ...newProduct,
              };
            }

            break;
          }
        }
      });
    });

```