moy-dom/src/patch/index.js

A flexiable Virtual DOM library for building modern web interface.

import dfsWalk from './dfsWalk'

export default function patch(node, patches){
  const rootWithNullPatch = patches.rootWithNull
  if(rootWithNullPatch){
    const { type, vnode } = rootWithNullPatch

    if(type === 4){
      let newNode = Object.prototype.toString.call(vnode) === '[object Element]' ? 
                      vnode.render() :
                      document.createTextNode(vnode)
      node.appendChild(newNode)
    }

    if(type === 5){
      node.removeChild(node.lastChild)
    }

    return
  }

  let walker = {index: 0}
  dfsWalk(node.lastChild, walker, patches)
}