Reactjs react native中未捕获的引用错误？

我在react native中得到了未捕获的引用错误，为什么？我能够成功构建，但捆绑程序显示此错误。我怎样才能修好它

注意：我使用的是windows 10

截图：

package.json：

{
  "name": "rchampz",
  "version": "0.0.1",
  "private": true,
  "scripts": {
    "start": "node node_modules/react-native/local-cli/cli.js start",
    "test": "jest"
  },
  "dependencies": {
    "lodash": "^4.17.11",
    "moment": "^2.22.2",
    "react": "16.5.0",
    "react-native": "0.57.0",
    "react-native-dash": "^0.0.9",
    "react-native-dropdownalert": "^3.5.0",
    "react-native-material-dropdown": "^0.11.1",
    "react-native-modal-datetime-picker": "^6.0.0",
    "react-native-paper": "^2.0.1",
    "react-native-render-html": "^3.10.0",
    "react-native-timeline-theme": "^0.0.9",
    "react-native-vector-icons": "^5.0.0",
    "react-navigation": "^2.14.2",
    "react-redux": "^5.0.7",
    "redux": "^4.0.0"
  },
  "devDependencies": {
    "babel-jest": "23.6.0",
    "jest": "23.6.0",
    "react-test-renderer": "16.5.0"
  },
  "jest": {
    "preset": "react-native"
  }
}

.LRC：

{
  "presets": ["module:react-native"]
}

---

如有疑问，请使用

react native cli

创建新的react native项目，并查看生成文件。我刚刚做到了，我现在得到的是：

package.json

{
  "name": "someproject",
  "version": "0.0.1",
  "private": true,
  "scripts": {
    "start": "node node_modules/react-native/local-cli/cli.js start",
    "test": "jest"
  },
  "dependencies": {
    "react": "16.5.0",
    "react-native": "0.57.1"
  },
  "devDependencies": {
    "babel-jest": "23.6.0",
    "jest": "23.6.0",
    "metro-react-native-babel-preset": "0.47.1",
    "react-test-renderer": "16.5.0"
  },
  "jest": {
    "preset": "react-native"
  }
}

.LRC：

{
  "presets": ["module:metro-react-native-babel-preset"]
}

---

请注意，如果您更改了package.json，可能首先需要进行一些清理

在.bablerc中包含react native的预设或从babel.config.js导出预设，如下所示

module.exports={
预设：[“模块：地铁反应本地巴别塔预设”]，
插件：[
“@babel/plugin转换运行时”
],
}

那么我应该安装

metro react native babel preset:“0.47.1”

？在安装新软件包之前，可能不需要我如何清理，我只是觉得ReactNative（更一般地说，npm）构建比较混乱，尤其是当您尝试降级某些依赖项时

rm-rf node_modules

要删除已安装的模块，

watchman watch del all

要清理捆绑机缓存，然后

npm install

要重新安装依赖项，

“预设”：[“模块：metro react native babel preset”]

适用于我在windows上的ios，应该是

“presets”：[“模块：react native”]

我遵循了您的步骤，但看到了屏幕截图：这不是RN问题，我想这是android版本的问题。我已经创建了一个新项目，但在成功绑定和构建后，我无法单击emulator，emulator无法再次运行@fun do尝试远程调试时出错？@TungDuong将android API版本升级到26（Oreo）的虚拟设备帮助我解决了这个问题将android API版本升级到26（Oreo）虚拟设备帮助我解决了这个问题您可以在oreo for windows 10中升级您的android版本（26+）。这也将帮助您解决问题。请在回答中添加它：）