<item> is html5 element?

[Rainnut]

I don't know what label element < item > is. HTML 5 has a < menuItem > label, but it doesn't look like the same thing.
Could you tell me how to use the element？？

[shuiRong]

It's a Vue's component.
https://github.com/shuiRong/vue-drag-tree/blob/master/src/DragNode.vue

 beforeCreate() {
    this.$options.components.item = require('./DragNode.vue')
  },

Vue Component