How to use the cyclejs.latest function in cyclejs

let View = Cycle.createView(Model => {
    return {
      vtree$: Cycle.latest(Model, Object.keys(props), item => {
          return (
            <div class="{Class({picture:">
              <img title="{item.title}/" width="{item.width}" src="{item.src}">
            </div>
          );
        }
      ),
    };
  });

let View = Cycle.createView(Model => {
    return {
      vtree$: Cycle.latest(Model, Object.keys(props), item => {
          return (
            <div class="{Class({picture:">
              <img title="{item.title}/" width="{item.width}" src="{item.src}">
            </div>
          );
        }
      ),
    };
  });

var View = Cycle.createView(function (Model) {
    return {
      vtree$: Cycle.latest(Model, Object.keys(props), function (item) {
        return h("div", { className: Class({ picture: true, favorite: item.favorite }) }, [h("img", { src: item.src, width: item.width, title: item.title })]);
      }) };
  });

var View = Cycle.createView(function (Model) {
    return {
      vtree$: Cycle.latest(Model, Object.keys(props), function (item) {
        return h("div", { className: Class({ picture: true, favorite: item.favorite }) }, [h("img", { src: item.src, width: item.width, title: item.title })]);
      }) };
  });