expand arrays

Is there a way to expandObject except for an Array?

My Form Data

{
    "modes.0.0": "none",
    "modes.0.1": "",
    "modes.1.0": "initiative",
    "modes.1.1": "initiative",
    "modes.2.0": "name",
    "modes.2.1": "name",
    "modes.3.0": "selection",
    "modes.3.1": "data.flags.ctg.group",
    "modes.4.0": "players",
    "modes.4.1": "players.*.id",
    "modes.5.0": "actor",
    "modes.5.1": "data.actorId",
    "modes.6.0": "mob",
    "modes.6.1": ""
}

Desired output:

[
    ["none", ""],
    ["initiative", "initiative"],
    ["name", "name"],
    ["selection", "data.flags.ctg.group"],
    ["players", "players.*.id"],
    ["actor", "data.actorId"],
    ["mob", ""]
]

I'm interested in hearing less messy solutions, but this seems to work:

Object.values(expandObject(temp1)).map(o => Object.values(o).map(o => Object.values(o)))[0]

There's no way to identify arrays in that, so there probably are no good methods.

I thought the foundry default expand object does this

At least when my form data has keys with 0s and such like that it shows up as arrays

It looks like this for me:

{
    "modes": {
        "0": {
            "0": "none",
            "1": ""
        },
        "1": {
            "0": "initiative",
            "1": "initiative"
        },
        "2": {
            "0": "name",
            "1": "name"
        },
        "3": {
            "0": "selection",
            "1": "data.flags.ctg.group"
        },
        "4": {
            "0": "players",
            "1": "players.*.id"
        },
        "5": {
            "0": "actor",
            "1": "data.actorId"
        }
    }
}

I need it to be an actual array because I need it to work with the Array push/pop/filter/unshift/etc. methods

Ohhhh that's what I did now I remember

@arcanist there's a method you can override in formapplication that isn't _updateObject which manipulates the form values provided to updateObject: _getSubmitData

so i'd recommend doing whatever you come up with in there