Function finalizeInitialChildren

docs/external/js/react-dom.development.js:7621–7624

(domElement, type, props, rootContainerInstance, hostContext)

    parentInstance.appendChild(child);
  }
  function finalizeInitialChildren(domElement, type, props, rootContainerInstance, hostContext) {
    setInitialProperties(domElement, type, props, rootContainerInstance);
    return shouldAutoFocusHostComponent(type, props);
  }
  function prepareUpdate(domElement, type, oldProps, newProps, rootContainerInstance, hostContext) {
    {
      var hostContextDev = hostContext;