从对象数组创建treeview，包括id和每个元素的原始路径(javascript)

var data = [
  { id: 1, path: 'root/parent1' },
  { id: 2, path: 'root/parent1/child1' },
  { id: 3, path: 'root/parent1/child2' },
  { id: 4, path: 'root/parent2' },
  { id: 5, path: 'root/parent2/child1' },
  { id: 6, path: 'root/parent2/child2' }
];

function createTreeView(data) {
  var tree = {};

  data.forEach(function(item) {
    var path = item.path.split('/');
    var currentNode = tree;

    path.forEach(function(key) {
      if (!currentNode[key]) {
        currentNode[key] = {};
      }
      currentNode = currentNode[key];
    });

    currentNode.id = item.id;
  });

  return tree;
}

var treeView = createTreeView(data);
console.log(treeView);