How can I deep watch a complex nested objects array and easily detect which item has changed?

[Syntax-J]

let array = [{...},{...},...]

Can I just create a watcher for each item in the array?
now i only do this with
deep watch array[0] callback set changed id = 0
deep watch array[1] callback set changed id = 1
........ with for loop
is there an easier way?

[perfectSquare]

try this

const testArray = ref([
        { name: 'A' },
        { name: 'B' },
        { name: 'C' },
        { name: 'D' },
    ])

    const testArray1 = computed(() => JSON.stringify(testArray.value));

    watch(testArray1, (n, o) => {
        let findChangedObject = JSON.parse(n).find((ob,i)=> {
            return ob.name !== JSON.parse(o)[i].name
        } )
        console.log(findChangedObject);        
    });

    const changeAnItem = () => {
        testArray.value[1].name = 'Z'
    }

hit changeAnItem  on some clicking some button