migrate to emscripten

javascript/sources/Size.hh

@@ -7,9 +7,6 @@
 
 #pragma once
 
-#include <nbind/api.h>
-#include <nbind/BindDefiner.h>
-
 struct Size {
   double width;
   double height;
@@ -17,6 +14,4 @@ struct Size {
   Size(void) : width(0.0), height(0.0) {}
 
   Size(double width, double height) : width(width), height(height) {}
-
-  void toJS(nbind::cbOutput expose) const { expose(width, height); }
 };