Function defineLegacyVNodeProperties

packages/runtime-core/src/compat/renderFn.ts:308–350

(vnode: VNode)

}

export function defineLegacyVNodeProperties(vnode: VNode): void {
  /* v8 ignore start */
  if (
    isCompatEnabled(
      DeprecationTypes.RENDER_FUNCTION,
      currentRenderingInstance,
      true /* enable for built-ins */,
    ) &&
    isCompatEnabled(
      DeprecationTypes.PRIVATE_APIS,
      currentRenderingInstance,
      true /* enable for built-ins */,
    )
  ) {
    const context = currentRenderingInstance
    const getInstance = () => vnode.component && vnode.component.proxy
    let componentOptions: any
    Object.defineProperties(vnode, {
      tag: { get: () => vnode.type },
      data: { get: () => vnode.props || {}, set: p => (vnode.props = p) },
      elm: { get: () => vnode.el },
      componentInstance: { get: getInstance },
      child: { get: getInstance },
      text: { get: () => (isString(vnode.children) ? vnode.children : null) },
      context: { get: () => context && context.proxy },
      componentOptions: {
        get: () => {
          if (vnode.shapeFlag & ShapeFlags.STATEFUL_COMPONENT) {
            if (componentOptions) {
              return componentOptions
            }
            return (componentOptions = {
              Ctor: vnode.type,
              propsData: vnode.props,
              children: vnode.children,
            })
          }
        },
      },
    })
  }
  /* v8 ignore stop */
}