I'm using a proxy object that ends up sending messages to the iframe behind the scene. So, from your perspective you're just accessing the object/function as if

I'm using a proxy object that ends up sending messages to the iframe behind the scene. So, from your perspective you're just accessing the object/function as if it is was in your window's context See: https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage https://developer.mozilla.org/en-US/docs/Web/API/Window/post... and https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Proxy https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...