replace `obj` with a module object. This wraps every method of that object that dumps nested, collapsible console logs any time those methods are called. logs include arguments, return value, and execution time.

debug-helper.js

for (i in obj)
    if (typeof obj[i] === 'function' && i !== 'toString')
        (function (method) {
            var fnc = obj[method]
            obj[method] = function () {
                var x
                console.groupCollapsed(this + " -> " + method)
                console.dir(this)
                console.dir(arguments)
                console.time(method + ' time')
                console.log(x = fnc.apply(this, arguments))
                console.timeEnd(method + ' time')
                console.groupEnd()
                return x
            }
        })(i)

• edited to make the wrapper functions return the value from the real functions.
• for readability, i recommend give your object a custom toString method