Combine object and delete a property

Beginner :

Supposed I have an array of objects structured like this

"err": [
    {
        "chk" : true,
        "name": "test"
    },
    {
        "chk" :true
        "post": "test"
    }
]

How can I re-structure it like this:

"err": [
    {
        "post": "test"
        "name": "test"
    }
]

I tried

arr.filter(obj => delete obj.chk);

It can successfully delete the chk property, but how can I combine the two objects?

CertainPerformance :

You can spread them into Object.assign to create a new object, then remove the chk property from that object:

const err = [
    {
        "chk" : true,
        "name": "test"
    },
    {
        "chk" :true,
        "post": "test"
    }
];
const newObj = Object.assign({}, ...err);
delete newObj.chk;
console.log([newObj]);

Another method, without deleting, would be to destructure chk on the left-hand side, and use rest syntax:

const err = [
    {
        "chk" : true,
        "name": "test"
    },
    {
        "chk" :true,
        "post": "test"
    }
];
const { chk: _, ...newObj } = Object.assign({}, ...err);
console.log([newObj]);