问题描述
我创建了一个新的 React Native 项目并使用了 Jest 测试，效果非常好。但是当我在现有的应用程序中尝试它时它无法工作，而是给了我以下错误。我怀疑是配置错误导致了这个问题：
SyntaxError: Unexpected token 'export'
4 | //Import React
5 | import React,{useEffect,useState} from 'react';
> 6 | import { StackActions,NavigationActions } from 'react-navigation';
| ^
7 | import {useSelector,usedispatch} from 'react-redux';
8 | import {changeVoucherCategory} from '../../../actions';
9 | //Import all required component
at Runtime.createScriptFromCode (node_modules/jest-runtime/build/index.js:1350:14)
at Object.<anonymous> (src/Screen/drawerScreens/Profile/ProfileScreen.js:6:1)
下面是我的一些文件
package.json
{
"private": true,"scripts": {
"android": "react-native run-android","ios": "react-native run-ios","web": "react-scripts start","start": "react-native start","test": "jest","lint": "eslint .","build:ios": "react-native bundle --entry-file='index.ios.js' --bundle-output='./ios/IGBFAMILY/main.jsbundle' --dev=false --platform='ios' --assets-dest='./ios'"
},"dependencies": {
"@babel/runtime": "^7.14.0","@react-native-community/async-storage": "^1.12.1","@react-native-community/cli-platform-ios": "^4.13.0","@react-native-community/masked-view": "^0.1.10","@react-native-community/netinfo": "^6.0.0","@react-navigation/bottom-tabs": "^5.11.2","@react-navigation/material-top-tabs": "^5.3.10","@react-navigation/native": "^5.8.10","@react-navigation/stack": "^5.12.8","@sentry/react-native": "^2.3.0","aws-sdk": "^2.897.0","babel-preset-react-app": "^7.0.0","base64-arraybuffer": "^0.2.0","jest-cli": "^26.6.3","json-groupby": "^1.1.0","moment": "^2.29.1","query-string": "^7.0.0","react": "16.13.1","react-dom": "^16.13.1","react-native": "^0.64.0","react-native-barcode-mask": "^1.2.4","react-native-base64": "^0.2.1","react-native-camera": "^3.43.3","react-native-checkBox-lite": "^1.0.2","react-native-countdown-component": "^2.7.1","react-native-datepicker": "^1.7.2","react-native-device-info": "^8.1.3","react-native-elements": "^3.3.1","react-native-firebase": "^5.6.0","react-native-flatlist-slider": "^1.0.5","react-native-fs": "^2.17.0","react-native-gesture-handler": "^1.3.0","react-native-material-tabs": "^4.1.2","react-native-mime-types": "^2.3.0","react-native-modal-dropdown": "^1.0.0","react-native-modal-overlay": "^1.3.1","react-native-passmeter": "0.0.5","react-native-phone-number-input": "^2.0.0","react-native-qrcode-svg": "^6.0.6","react-native-reanimated": "^2.1.0","react-native-safe-area-context": "^3.1.9","react-native-screens": "^2.16.1","react-native-segmented-control-tab": "^3.4.1","react-native-sha256": "^1.3.6","react-native-snap-carousel": "^3.9.1","react-native-sqlite-storage": "^5.0.0","react-native-svg": "^12.1.0","react-native-tab-view": "^2.16.0","react-native-ui-xg": "0.0.6","react-native-vector-icons": "^7.1.0","react-native-webview": "^11.4.0","react-navigation": "^4.4.2","react-navigation-drawer": "^2.5.2","react-navigation-stack": "^2.8.4","react-redux": "^7.2.3","react-scripts": "^4.0.3","redux": "^4.0.5","redux-thunk": "^2.3.0","url": "^0.11.0"
},"devDependencies": {
"@babel/core": "7.11.6","@babel/preset-env": "^7.14.1","@babel/runtime": "^7.14.0","@react-native-community/eslint-config": "1.1.0","babel-jest": "^26.6.3","eslint": "6.8.0","jest": "^26.6.3","metro-react-native-babel-preset": "0.59.0","react-test-renderer": "^16.14.0"
},"jest": {
"preset": "react-native","transformIgnorePatterns": [
"node_modules/(?!(jest-)?react-native)","node_modules/?!(react-navigation)"
]
}
}
babel.config.js
module.exports = {
presets: ['module:metro-react-native-babel-preset',"@babel/react","@babel/env"],};
App-test.js
import 'react-native';
import React from 'react';
import renderer from 'react-test-renderer';
import App from '../src/App';
it('renders correctly',() => {
renderer.create(<App />);
});
我在 StackOverflow 和互联网上尝试了许多公认的答案，但没有成功解决这个问题。这些是我记得的一些链接，可能有些不相关，因为除了 @ 之外，我在其他模块上也遇到了同样的问题反应导航：
https://stackoverflow.com/a/59802557/14792325
https://stackoverflow.com/a/54463740/14792325
https://stackoverflow.com/a/55803188/14792325
https://stackoverflow.com/a/43197503/14792325
https://lifesaver.codes/answer/react-native-syntaxerror-unexpected-token-import
谁能帮我找出我的错误？非常感谢。
解决方法
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