“你需要合适的加载器”，使用 react native 和 expo。应用程序无法在 web 上编译，但在 android 上运行

Posted 2023-02-22

【中文标题】“你需要合适的加载器”，使用 react native 和 expo。应用程序无法在 web 上编译，但在 android 上运行

【英文标题】："You require appropriate loaders", Using react native and expo. App fails to compile on the web, but runs on android

【发布时间】：2020-11-22 13:20:18

【问题描述】：

我正在使用 react native expo。该应用程序在 android 上运行良好，但在 web 上运行时会出现编译错误。它以前工作正常，但我怀疑这是在安装一些新软件包后开始的。

/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。

【参考方案1】：

我遇到了同样的问题，我今天找到了解决方案。 感谢世博论坛上的这种好心用户。

judipuak's post

在 npm 上使用 yarn 将 react-native-keyboard-aware-scroll-view 包安装到你的 node_modules 中 导航到原生 base/dist/src/basic 并打开 Content.js 查找var _reactNativeKeyboardAwareScrollView=require('@codler/react-native-keyboard-aware-scroll-view') 将此更改为var _reactNativeKeyboardAwareScrollView=require('react-native-keyboard-aware-scroll-view')（删除@codler）

更新： 这是一个更永久的解决方案 礼貌patarapolw

我在 package.json 中降级两件事，升级一件事

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

【讨论】：

所以，解决方案是……不使用代码？为什么会发生这种情况。

【参考方案2】：

这是一个本地库问题。当您使用它的某些组件时，可能会发生错误。我发现这个错误在 2.11 中没有发生，或者它的版本较低，所以尝试安装该特定版本

npm install native-base@2.11