{
const container = d3.select(DOM.svg(600,300)).attr("style","border:solid 1px black")
const square = container.append("rect")
.attr("width",50)
.attr("height",50)
yield container.node()
await square.transition().duration(1000).ease(d3.easeBounceOut).attr("x",300).end()
square.transition().duration(1000).ease(d3.easeBounceOut).attr("y",150)
}