Flatten putting all list of list items in same object?

[odscjames]

Setup

Start with a Schema:

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "type": "object",
  "properties": {
    "id": {
      "type": "string"
    },
    "address": {
      "type": "string"
    },
    "cats": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "name": {
            "type": "string"
          },
          "good_quantities": {
            "type": "array",
            "items": {
              "type": "object",
              "properties": {
                "quantity": {
                  "type": "string"
                }
              }
            }
          }
        }
      },
      "rollUp": [
        "name"
      ]
    }
  }
}

Run:

flatten-tool create-template --main-sheet-name=homes --schema schema.json --rollup   -f csv -o testoutput

Look in testoutput.

We have a "homes.csv", and we are assuming that every home only has 1 cat (odd assumption but I'm simplifying from an more complex case so go with it)

We have a "cat_good_quantities.csv" - this is a separate child spreadsheet because clearly every cat has way more than 1 good quality (this assumption is true).

Edit "homes.csv":

id,address,cats/0/name
1,"5 Street","Bobby"

Edit "cat_good_quantities.csv":

id,cats/0/good_quantities/0/quantity
1,"Purrs"
1,"Furry"

Bobby is a good cat.

Run:

flatten-tool unflatten -o cats.json -f csv --schema schema.json  --root-list-path=homes  testoutput/

What you get

{
    "homes": [
        {
            "id": "1",
            "cats": [
                {
                    "good_quantities": [
                        {
                            "quantity": "Purrs"
                        }
                    ]
                },
                {
                    "good_quantities": [
                        {
                            "quantity": "Furry"
                        }
                    ]
                },
                {
                    "name": "Bobby"
                }
            ],
            "address": "5 Street"
        }
    ]
}

What I would like

{
    "homes": [
        {
            "id": "1",
            "cats": [
                {
                    "good_quantities": [
                        {
                            "quantity": "Purrs"
                        },
                        {
                            "quantity": "Furry"
                        }
                    ]
                    "name": "Bobby"
                }
            ],
            "address": "5 Street"
        }
    ]
}

Question

Is there any way to achieve this?