sort array object by using set of collection in javascript

I have a very unique situation and i am trying to sort this complex data structure in javascript.

let data = [
    {
        "failureNo": 1,
        "rec": { "uniqId": "l-7fa-48eda0bb762f", "rotorId": "1.24.39" },
        "exceptionId": 0
    },
    {
        "failureNo": 2,
        "rec": { "uniqId": "l-1577edb762f", "rotorId": "1.20.32" },
        "exceptionId": 1
    },
    {
        "failureNo": 2,
        "rec": { "uniqId": "l-85fa-48eda0bb762f", "rotorId": "1.24.39" },
        "exceptionId": 1
    },
    {
        "failureNo": 3,
        "rec": { "uniqId": "l-48eda0bb762f", "rotorId": "1.24.39" },
        "exceptionId": 2
    },
]

Here is my input above. User does some interaction in the UI and i get the below variable from that interaction. so checkedValues variable tells me that user has selected 2 entries using checkbox. 2 entries because the collection object below has value associated to it. for e.g for key 1 it has value as new Set([ "_com.smp.1905546540", "_com.smp.3345454545" ]),
key 2 has value as new Set([ "_com.smp.33343rf453" ]) 3rd checkbox is not selected and that value is {} in below data.

let checkedValues = new Map([
    [
        1,
        new Set([ "_com.smp.1905546540", "_com.smp.3345454545" ])
    ],
    [
        2,
        new Set([ "_com.smp.33343rf453" ])
    ],
    [
        0, 
        {}
    ],
])

So when checkbox with key 1 and 2 are selected, it is mapped to exceptionId in the data variable. This selection of 1 and 2 means we want the objects with exceptionId 1 and 2 to be sorted and shown first and then the rest.

So my final output should be as follows

let result = [
    {
        "failureNo": 2,
        "rec": { "uniqId": "l-1577edb762f", "rotorId": "1.20.32" },
        "exceptionId": 1
    },
    {
        "failureNo": 2,
        "rec": { "uniqId": "l-85fa-48eda0bb762f", "rotorId": "1.24.39" },
        "exceptionId": 1
    },
    {
        "failureNo": 3,
        "rec": { "uniqId": "l-48eda0bb762f", "rotorId": "1.24.39" },
        "exceptionId": 2
    },
    {
        "failureNo": 1,
        "rec": { "uniqId": "l-7fa-48eda0bb762f", "rotorId": "1.24.39" },
        "exceptionId": 0
    }
]

In order to achieve this sorting, i created a function as follows

export const sortData = (data, checkedValues) => {
    const dataCopy = [...data];
    return dataCopy.sort((a, b) => {
      const aValues = checkedValues.get(a?.exceptionId);
      const bValues = checkedValues.get(b?.exceptionId);
      const aChecked = aValues ? aValues.has(a?.value) : false;
      const bChecked = bValues ? bValues.has(b?.value) : false;
  
      if (aChecked && !bChecked) return -1;
      if (!aChecked && bChecked) return 1;
  
      return a.failureNo - b.failureNo;
    });
  };

There is no runtime error on this function but the problem is that it doesnot sort data at all. it just displays the data as output as it is without sorting anything. Can someone please let me know where i am going wrong.