print signal graph from within Elm runtime

gistfile1.js

			function printGraph(queue)
			{
				queue = queue.slice(0);

                                console.log('digraph { //');
				var seen = [];
				while (queue.length > 0)
				{
					var node = queue.pop();
					var id = node.id;
					if (seen.indexOf(id) < 0)
					{
						console.log('%d [label="%s"]; //', id, node.name);
						var kids = node.kids || [];
						for (var i = kids.length; i--; )
						{
							console.log('%d -> %d', id, kids[i].id, '; //');
						}
						queue = queue.concat(kids);
						seen.push(id);
					}
				}
                                console.log('} //');
			}