removes mismatches between object a and object b

gistfile1.js

function removeMismatch (objA, objB) {
    var key, val;

    for (key in objA) {
        val = objA[key];

        if (!objB[key] || typeof objA[key] !== typeof objB[key]) {
            delete objA[key];
        } else {
            if (typeof objA[key] === 'object') {
                removeMismatch(objA[key], objB[key]);
            } else {
                if (objA[key] !== objB[key]) {
                    delete objA[key];
                }
            }
        }
    }
}