JS is odd

js-is-odd.js

const myMutator = (theObj) => {
    const objClone = {...theObj};
    objClone.primProp = 2;
    objClone.objProp.value = 'mutated!';
};

const myObj = {
    primProp: 1,
    objProp: { value: 'original' }
};

myMutator(myObj);

console.log(myObj);

/* Output: 
{
    primProp: 1
    objProp: {
        value: 'mutated!'
    }
}
*/