Vue中简单的虚拟DOM是什么样

<div class="message">Hello World</div>

{
    "sel": "div",
    "data": {
        "class": "message"
    },
    "text": "Hello World"
}

<div id="container">
  <div class="message">Hello World</div>
</div>

{
    "sel": "div",
    "data": {
        "id": "container"
    },
    "children": [
        {
            "sel": "div",
            "data": {
                "class": "message"
            },
            "text": "Hello World"
        }
    ]
}

<div class="message">Hello World</div>

{
  tag: "div",
  data: {
      "staticClass": "message"
  }
  children: [
    {
      text: "Hello World",
      ...
    },
  ],
  ...
}

export default class VNode {
  tag: string | void;
  data: VNodeData | void;
  children: ?Array<VNode>;
  text: string | void;
  elm: Node | void;
  ns: string | void;
  context: Component | void; // rendered in this component's scope
  key: string | number | void;
  componentOptions: VNodeComponentOptions | void;
  componentInstance: Component | void; // component instance
  parent: VNode | void; // component placeholder node
  // strictly internal
  raw: boolean; // contains raw HTML? (server only)
  isStatic: boolean; // hoisted static node
  isRootInsert: boolean; // necessary for enter transition check
  isComment: boolean; // empty comment placeholder?
  isCloned: boolean; // is a cloned node?
  isOnce: boolean; // is a v-once node?
  asyncFactory: Function | void; // async component factory function
  asyncMeta: Object | void;
  isAsyncPlaceholder: boolean;
  ssrContext: Object | void;
  fnContext: Component | void; // real context vm for functional nodes
  fnOptions: ?ComponentOptions; // for SSR caching
  devtoolsMeta: ?Object; // used to store functional render context for devtools
  fnScopeId: ?string; // functional scope id support
  constructor(
    tag?: string,
    data?: VNodeData,
    children?: ?Array<VNode>,
    text?: string,
    elm?: Node,
    context?: Component,
    componentOptions?: VNodeComponentOptions,
    asyncFactory?: Function
  ) {
    this.tag = tag;
    this.data = data;
    this.children = children;
    this.text = text;
    this.elm = elm;
    this.ns = undefined;
    this.context = context;
    this.fnContext = undefined;
    this.fnOptions = undefined;
    this.fnScopeId = undefined;
    this.key = data && data.key;
    this.componentOptions = componentOptions;
    this.componentInstance = undefined;
    this.parent = undefined;
    this.raw = false;
    this.isStatic = false;
    this.isRootInsert = true;
    this.isComment = false;
    this.isCloned = false;
    this.isOnce = false;
    this.asyncFactory = asyncFactory;
    this.asyncMeta = undefined;
    this.isAsyncPlaceholder = false;
  }
}

export function createTextVNode(val: string | number) {
  return new VNode(undefined, undefined, undefined, String(val));
}

<div>Hello world</div>