Question

将expo从SDK 26升级到SDK 32后，当我使用expo run emulator或expo app时遇到以下问题：

/用户/名称用户/项目名称/node_modules/expo/AppEntry.js：无法读取未定义的属性“ 1”

AppEntry.js：

import { KeepAwake, registerRootComponent } from 'expo';
import App from '../../App';


if (__DEV__) {
   KeepAwake.activate();
}

registerRootComponent(App);

package.json：

{
   “main”: “node_modules/expo/AppEntry.js”,
   “private”: true,
   “scripts”: {
      “test”: “node ./node_modules/jest/bin/jest.js --watchAll”
   },
   “jest”: {
       “preset”: “jest-expo”
   },
   “dependencies”: {
       “@expo/samples”: “2.1.1”,
       “babel-preset-expo”: “^5.1.1”,
       “expo”: “^32.0.0”,
       “npm”: “^4.6.1”,
       “react”: “16.5.0”,
       “react-native”: “https://github.com/expo/react- 
       native/archive/sdk- 32.0.0.tar.gz”,
       “react-native-animatable”: “^1.2.4”,
       “react-native-device-info”: “^0.21.5”,
       “react-native-drawer”: “^2.5.0”,
       “react-native-drawer-menu”: “^0.2.5”,
       “react-native-elements”: “^0.19.1”,
       “react-native-fetch-polyfill”: “^1.1.2”,
       “react-native-geocoder”: “^0.5.0”,
       “react-native-geocoding”: “^0.3.0”,
       “react-native-google-maps-directions”: “^2.0.0”,
       “react-native-keyboard-spacer”: “^0.4.1”,
       “react-native-maps”: “^0.21.0”,
       “react-native-masked-text”: “^1.6.5”,
       “react-native-qrcode-svg”: “^5.1.1”,
       “react-native-select-input-ios”: “^1.2.0”,
       “react-native-swipeable”: “^0.6.0”,
       “react-native-swiper”: “^1.5.13”,
       “react-native-touch-id”: “^4.0.4”,
       “react-native-vector-icons”: “^4.6.0”,
       “react-navigation”: “^3.0.9”
    },
    “devDependencies”: {
       “@babel/core”: “^7.4.3”,
       “@babel/preset-env”: “^7.0.0-beta.47”,
       “gulp-babel”: “^7.0.1”,
       “jest-expo”: “^32.0.0”
    }
}

编辑： After adjusting at the suggestion, I'm getting this error:

用户/用户名/项目名称/App.js：无法读取未定义的属性“文件名”

是否有尝试解决方案的想法？任何帮助将不胜感激！

Answer 1

查看expo的问题日志，我发现其他人在从以下位置进行更新时也遇到了类似的问题：

SDK版本30到SDK版本31

，此问题与其babel的配置有关。也许您正在处理同一问题，也许您可以尝试他们的suggested解决方案，并查看自从SDK版本26更新以来是否也解决了您的问题。

这是他们的建议：

安装babel-plugin-module-resolver的最新版本：

npm i --save-dev babel-plugin-module-resolver@latest

或者：

yarn add babel-plugin-module-resolver@latest

另外，其他人必须更改其.babelrc的内容才能使用"babel-preset-expo"预设：

.babelrc

{
  "presets": ["babel-preset-expo"]
}

希望有帮助！

将Expo 26升级到32后，Expo启动不起作用

1 个答案: