SOURCE

var theThing = null;
var replaceThing = function(){
    var originalThing = theThing;
    var unused = function(){
        if(originalThing)
        console.log('hi')
    };

    theThing = {
        longString: new Array(1000000).join('*'),
        someMethod: function(){
            console.log('someMessage');
        }

    };
};
setInterval(replaceThing,1000)