immutable.js console.log

console.log.js

(function () {
    var _log = console.log;
    console.log = function () {
        var args = Array.prototype.map.call(arguments, function (arg) {
            return typeof arg.toJS === "function" ? arg.toJS() : arg;
        });
        return _log.apply(console, args);
    };
})();