haxe nested structInit

Main.hx

@:structInit
class A {
 var x:Int;
 var y:Int;
}

@:structInit
class B {
  var a:A;
  var k:Int;
}

class Main {

  static function main() {
    var b:B = {a:{x:1,y:2},k:3};
  }
}

main.js

// Generated by Haxe 3.3.0
(function () { "use strict";
var A = function(x,y) {
	this.x = x;
	this.y = y;
};
var B = function(a,k) {
	this.a = a;
	this.k = k;
};
var Main = function() { };
Main.main = function() {
	new B(new A(1,2),3);
};
Main.main();
})();