1. Run the following snippet in devtools.
2. When it stops on the breakpoint take a heap snapshot
3. My class objects are missing from the list as well as the arrays.

var foo = function() {
	var MyClass = function(i) {
		this.num = i;
		this.z = new Array(10000).fill(5);
	}
	MyClass.prototype.speak = function() { console.log("I have spoken" + this.num); }

	var objects = [];
	for(var i = 0; i < 1000; i++) {
		objects.push(new MyClass(i));
	}
	
	debugger;
	
	for(var i = 0; i < objects.length; i++) {
		objects[i].speak();
	}
}

foo();