wrap.js

function wrap(obj, onlyOwnProperties) {
    obj = obj || {};

    for (var propName in obj) {
        if (onlyOwnProperties && obj.hasOwnProperty(propName)) {
            continue;
        }

        if (typeof obj[propName] !== 'function') {
            continue;
        }

        wrapMethod(obj, propName);
    }
}

function wrapMethod(obj, methodName) {
    var _method = obj[methodName];
    var counter = 0;
    
    obj[methodName] = function() {
        var result = _method.apply(obj, arguments);
        var index = ++counter;
        console.log(index, methodName, arguments, '>>>', result);
        return result;
    };

    for (var prop in _method) {
        if (_method.hasOwnProperty(prop)) {
            obj[methodName][prop] = _method[prop];
        }
    }
}