Override document.write

override-document-write.js

(function() {
	var old = document.write;
	
	document.write = function( content ) {
		if ( "interactive" === document.readyState ) {
			console.log("document.write called after page load: ", content );
			// optional.. safely append the content
			// document.body.appendChild( content );
			return;
		}
		old.call( document, content );
	};
})();