我在scala-js中为react-native编写包装器

  lazy val reactNative = js.Dynamic.global.require("react-native")
  val View = reactNative.View
  val component = ReactNativeB[Unit]("NativeYeah")
          .render(P => {
             reactNative.createElement(View,null)
        }).buildU
  reactNative.AppRegistry.registerComponent("iOSscala", () => component())

组件注册良好,但是在创建View元素时失败！

null is not a function (evaluating ‘autoGenerateWrapperClass(tag)’)”

全栈跟踪：

CTJSLog> "Error: 
 stack: 
  getComponentClassForElement     index.ios.bundle:5894
  validatePropTypes               index.ios.bundle:5634
  createElement                   index.ios.bundle:5681
  renderApplication               index.ios.bundle:33913
  run                             index.ios.bundle:33858
  runApplication                  index.ios.bundle:33880
  jsCall                          index.ios.bundle:7237
  _callFunction                   index.ios.bundle:7484
  applyWithGuard                  index.ios.bundle:877
  guardReturn                     index.ios.bundle:7286
  callFunctionReturnFlushedQueue  index.ios.bundle:7493
 URL: http://localhost:8081/index.ios.bundle
 line: 5894
 message: null is not a function (evaluating 'autoGenerateWrapperClass(tag)')"

在调试此功能时

function getComponentClassForElement(element) {
  if (typeof element.type === 'function') {
    return element.type;
  }
  var tag = element.type;
  var componentClass = tagToComponentClass[tag];
  if (componentClass == null) {
    tagToComponentClass[tag] = componentClass = autoGenerateWrapperClass(tag);
  }
  return componentClass;
}

标签值是ReactElement

注意：上面的代码在带有div标签/ react组件的reactjs中可以正常工作.

编辑：它的问题来自scalajs-react生成器,它遵循ReactJS渲染API而不是AppRegistry,关闭问题.

解决方法:

如果您要渲染的组件未定义(as per this issue),您将看到此错误消息.在将组件传递给registerComponent之前,component的值是多少？