How to remove key value pair from an object having values as another array of objects?

Question

Here I have created a data based on my backend get call response. So I came across usecase where my data have to match with my backend data type.

The data I have generated looks like this:

var valGroup = {
    "Tier1": [
        {
            "DE": 0,
            "CreditRange": "0",
            "VintageCriteria": [],
            "DBR": 0,
            "NetsalesCriteria": [],
            "ABBmultiplier": 0,
            "BTO": 0,
            "MUE": [],
            "TurnoverCriteria": 0,
            "DSCR": 0,
            "category": "Tier1"
        },
        {
            "DE": 0,
            "CreditRange": "0",
            "VintageCriteria": [],
            "DBR": 0.8,
            "NetsalesCriteria": [],
            "ABBmultiplier": 0,
            "BTO": 0,
            "MUE": [],
            "TurnoverCriteria": 0,
            "DSCR": 0,
            "category": "Tier1"
        }
    ],
    "Tier2": [
        {
            "DE": 0,
            "CreditRange": "0",
            "VintageCriteria": [],
            "DBR": 0,
            "NetsalesCriteria": [],
            "ABBmultiplier": 0,
            "BTO": 0,
            "MUE": [],
            "TurnoverCriteria": 0,
            "DSCR": 0,
            "category": "Tier2"
        },
        {
            "DE": 0,
            "CreditRange": "",
            "VintageCriteria": [],
            "DBR": 0,
            "NetsalesCriteria": [],
            "ABBmultiplier": 0,
            "BTO": 0,
            "MUE": [],
            "TurnoverCriteria": 0,
            "DSCR": 0,
            "category": "Tier2"
        }
    ]
}

Here from the above mentioned data I have to remove the "category" key value pair like this:

var valGroup = {
    "Tier1": [
        {
            "DE": 0,
            "CreditRange": "0",
            "VintageCriteria": [],
            "DBR": 0,
            "NetsalesCriteria": [],
            "ABBmultiplier": 0,
            "BTO": 0,
            "MUE": [],
            "TurnoverCriteria": 0,
            "DSCR": 0
        },
        {
            "DE": 0,
            "CreditRange": "0",
            "VintageCriteria": [],
            "DBR": 0.8,
            "NetsalesCriteria": [],
            "ABBmultiplier": 0,
            "BTO": 0,
            "MUE": [],
            "TurnoverCriteria": 0,
            "DSCR": 0
        }
    ],
    "Tier2": [
        {
            "DE": 0,
            "CreditRange": "0",
            "VintageCriteria": [],
            "DBR": 0,
            "NetsalesCriteria": [],
            "ABBmultiplier": 0,
            "BTO": 0,
            "MUE": [],
            "TurnoverCriteria": 0,
            "DSCR": 0
        },
        {
            "DE": 0,
            "CreditRange": "",
            "VintageCriteria": [],
            "DBR": 0,
            "NetsalesCriteria": [],
            "ABBmultiplier": 0,
            "BTO": 0,
            "MUE": [],
            "TurnoverCriteria": 0,
            "DSCR": 0
        }
    ]
}

I tried something with Object.keys and going through my object's key and index but can't delete that key/value pair. Is there any other approach by which I can get the required data?

Answer 1

Since you mentioned that you tried that with object.keys() ... here is a solution how that would look like:

var valGroup = {
    "Tier1": [
        {
            "DE": 0,
            "CreditRange": "0",
            "VintageCriteria": [],
            "DBR": 0,
            "NetsalesCriteria": [],
            "ABBmultiplier": 0,
            "BTO": 0,
            "MUE": [],
            "TurnoverCriteria": 0,
            "DSCR": 0,
            "category": "Tier1"
        },
        {
            "DE": 0,
            "CreditRange": "0",
            "VintageCriteria": [],
            "DBR": 0.8,
            "NetsalesCriteria": [],
            "ABBmultiplier": 0,
            "BTO": 0,
            "MUE": [],
            "TurnoverCriteria": 0,
            "DSCR": 0,
            "category": "Tier1"
        }
    ],
    "Tier2": [
        {
            "DE": 0,
            "CreditRange": "0",
            "VintageCriteria": [],
            "DBR": 0,
            "NetsalesCriteria": [],
            "ABBmultiplier": 0,
            "BTO": 0,
            "MUE": [],
            "TurnoverCriteria": 0,
            "DSCR": 0,
            "category": "Tier2"
        },
        {
            "DE": 0,
            "CreditRange": "",
            "VintageCriteria": [],
            "DBR": 0,
            "NetsalesCriteria": [],
            "ABBmultiplier": 0,
            "BTO": 0,
            "MUE": [],
            "TurnoverCriteria": 0,
            "DSCR": 0,
            "category": "Tier2"
        }
    ]
}

const result = Object.fromEntries([
    ...Object.keys(valGroup)
        .map(key => [key, valGroup[key].map(({category, ...rest}) => rest)])
])

console.log(result);