“您需要适当的加载器”，使用react原生和expo。App无法在网络上编译，但可在android上运行

Question

我正在使用react native expo。该应用程序在android上运行良好，但在网络上运行时会出现编译错误。它在以前工作得很好，但我怀疑这是在安装了一些新的软件包后开始的。

/ReactNativeFrontend/node_modules/@codler/react-native-keyboard-aware-scroll-view/lib/KeyboardAwareHOC.js 13:12
Module parse failed: Unexpected token (13:12)
You may need an appropriate loader to handle this file type, currently no loaders are configured to process this file. See https://webpack.js.org/concepts#loaders
| } from 'react-native'
| import { isIphoneX } from 'react-native-iphone-x-helper'
> import type { KeyboardAwareInterface } from './KeyboardAwareInterface'
| 
| const _KAM_DEFAULT_TAB_BAR_HEIGHT: number = isIphoneX() ? 83 : 49

我的babel配置

module.exports = function(api) {
  api.cache(true);
  return {
    presets: ['babel-preset-expo'],
  };
};

我的package.json

{
  "main": "node_modules/expo/AppEntry.js",
  "scripts": {
    "start": "expo start",
    "android": "expo start --android",
    "ios": "expo start --ios",
    "web": "expo start --web",
    "eject": "expo eject"
  },
  "dependencies": {
    "@codler/native-base": "^2.14.2",
    "@material-ui/core": "^4.11.0",
    "@react-native-community/art": "^1.2.0",
    "@react-native-community/async-storage": "^1.11.0",
    "@react-native-community/datetimepicker": "^2.4.0",
    "@react-native-community/masked-view": "0.1.10",
    "@react-native-community/voice": "^1.1.6",
    "@risingstack/react-easy-state": "^6.3.0",
    "axios": "^0.19.2",
    "easy-peasy": "^3.3.1",
    "expo": "~38.0.8",
    "expo-camera": "^8.3.1",
    "expo-constants": "^9.1.1",
    "expo-font": "~8.2.1",
    "expo-gl": "^8.3.1",
    "expo-image-picker": "^8.3.0",
    "expo-permissions": "^9.0.1",
    "expo-pixi": "^1.2.0",
    "expo-speech": "~8.2.1",
    "expo-status-bar": "^1.0.2",
    "i18n-js": "^3.7.1",
    "lodash.memoize": "^4.1.2",
    "native-base": "^2.13.12",
    "proxy": "^1.0.2",
    "react": "~16.11.0",
    "react-dom": "~16.11.0",
    "react-instantsearch-native": "^6.7.0",
    "react-native-chatbot": "0.0.1-alpha.12",
    "react-native-datepicker": "^1.7.2",
    "react-native-dialogflow": "^3.2.2",
    "react-native-elements": "^2.0.4",
    "react-native-fade-in-view": "^1.1.0",
    "react-native-gesture-handler": "~1.6.0",
    "react-native-gifted-chat": "^0.16.3",
    "react-native-localization": "^2.1.6",
    "react-native-localize": "^1.4.1",
    "react-native-no-flicker-image": "^1.0.2",
    "react-native-paper": "^4.0.1",
    "react-native-reanimated": "~1.9.0",
    "react-native-safe-area-context": "~3.0.7",
    "react-native-screens": "~2.9.0",
    "react-native-signature-capture": "^0.4.10",
    "react-native-star-rating": "^1.1.0",
    "react-native-vector-icons": "^7.0.0",
    "react-native-voice": "^0.3.0",
    "react-native-web": "~0.11.7",
    "react-navigation": "^4.4.0",
    "react-navigation-stack": "^2.8.2",
    "react-navigation-tabs": "^2.9.0",
    "styled-components": "^5.1.1"
  },
  "devDependencies": {
    "@babel/core": "^7.8.6",
    "@babel/preset-env": "^7.11.0",
    "babel-preset-expo": "~8.1.0",
    "react-native": "^0.63.2"
  },
  "private": true,
  "rnpm": {
    "assets": "./assets/fonts"
  },
  "proxy": "http://localhost:19002"
}

如何添加适当的加载器，或识别导致此问题的包。

Answer 1

我也遇到了同样的问题，今天我找到了一个解决方案。感谢世博论坛上的这位好心的用户。

judipuak's post

1. 在npm上使用yarn将react-native-keyboard-aware-scroll-view软件包安装到您的node_modules中
2. 导航到native base/dist/src/basic，然后打开Content.js
3. Find var _reactNativeKeyboardAwareScrollView=require('@codler/react-native-keyboard-aware-scroll-view')
4. Change this to var _reactNativeKeyboardAwareScrollView=require('react-native-keyboard-aware-scroll-view') (删除

更新：这里有一个由patarapolw提供的更永久的解决方案

在package.json中，我降级了两件事，升级了一件事

 {
  "dependencies": {
    "native-base": "~2.11",
    "react-native-web": "~0.11"
  },
  "resolutions": {
    "react-native-keyboard-aware-scroll-view": "^0.9.0"
  },
}

Answer 2

这是一个本地库问题。当你使用它的一些组件时，可能会发生错误。我发现这个错误在2.11或更低的版本中不会发生，所以请尝试安装该特定版本

npm install native-base@2.11