无论我尝试安装什么(明智的做法),都应保持此错误,因为我遵循其他类似的报告。这是堆栈跟踪:
> error: bundling failed: Error: Requires Babel "^7.0.0-0", but was
> loaded with "6.26.3". If you are sure you have a compatible version of
> @babel/core, it is likely that something in your build process is
> loading the wrong version. Inspect the stack trace of this error to
> look for the first entry that doesn't mention "@babel/core" or
> "babel-core" to see what is calling Babel. (While processing preset:
> "C:\\Users\\Admin-ESS\\Absent\\node_modules\\@babel\\preset-
> env\\lib\\index.js")
> at throwVersionError (C:\Users\Admin-
> ESS\Absent\node_modules\@babel\preset-env\node_modules\@babel\helper-plugin-
> utils\lib\index.js:65:11)
> at Object.assertVersion (C:\Users\Admin-
> ESS\Absent\node_modules\@babel\preset-env\node_modules\@babel\helper-plugin-
> utils\lib\index.js:13:11)
> at _default (C:\Users\Admin-ESS\Absent\node_modules\@babel\preset-
> env\lib\index.js:150:7)
> at C:\Users\Admin-ESS\Absent\node_modules\@babel\preset-
> env\node_modules\@babel\helper-plugin-utils\lib\index.js:19:12
> at C:\Users\Admin-ESS\Absent\node_modules\metro\node_modules\babel-
> core\lib\transformation\file\options\option-manager.js:317:46
> at Array.map (<anonymous>)
> at OptionManager.resolvePresets (C:\Users\Admin-
> ESS\Absent\node_modules\metro\node_modules\babel-
> core\lib\transformation\file\options\option-manager.js:275:20)
> at OptionManager.mergePresets (C:\Users\Admin-
> ESS\Absent\node_modules\metro\node_modules\babel-
> core\lib\transformation\file\options\option-manager.js:264:10)
> at OptionManager.mergeOptions (C:\Users\Admin-
> ESS\Absent\node_modules\metro\node_modules\babel-
> core\lib\transformation\file\options\option-manager.js:249:14)
> at OptionManager.init (C:\Users\Admin-
> ESS\Absent\node_modules\metro\node_modules\babel-
> core\lib\transformation\file\options\option-manager.js:368:12)
> at File.initOptions (C:\Users\Admin-
> ESS\Absent\node_modules\metro\node_modules\babel-
> core\lib\transformation\file\index.js:212:65)
> at new File (C:\Users\Admin-
> ESS\Absent\node_modules\metro\node_modules\babel-
> core\lib\transformation\file\index.js:135:24)
> at Pipeline.transform (C:\Users\Admin-
> ESS\Absent\node_modules\metro\node_modules\babel-
> core\lib\transformation\pipeline.js:46:16)
> at Object.transform (C:\Users\Admin-
> ESS\Absent\node_modules\metro\src\transformer.js:135:5)
> at Object.transformCode [as transform] (C:\Users\Admin-
> ESS\Absent\node_modules\metro\src\JSTransformer\worker\index.js:253:15)
> at execMethod (C:\Users\Admin-ESS\Absent\node_modules\jest-
> worker\build\child.js:92:29)
> at process.on (C:\Users\Admin-ESS\Absent\node_modules\jest-
> worker\build\child.js:42:7)
> at process.emit (events.js:180:13)
> at emit (internal/child_process.js:783:12)
>
和我的package.json:
{
"name": "Absent",
"version": "0.1.0",
"private": true,
"devDependencies": {
"babel-preset-react-native-stage-0": "^1.0.1",
"jest": "^23.5.0",
"jest-react-native": "^18.0.0",
"react-test-renderer": "16.3.1"
},
"scripts": {
"start": "react-native start",
"android": "react-native run-android",
"ios": "react-native run-ios",
"test": "jest"
},
"jest": {
"preset": "react-native"
},
"dependencies": {
"@babel/core": "^7.0.0-rc.1",
"@babel/preset-env": "^7.0.0-rc.1",
"@babel/preset-react": "^7.0.0-rc.1",
"jail-monkey": "^1.0.0",
"prop-types": "^15.6.2",
"react": "16.3.1",
"react-native": "^0.55.4",
"react-native-device-info": "^0.22.4",
"react-native-elements": "^0.19.1",
"react-native-firebase": "^4.3.8",
"react-native-modal": "^6.5.0",
"react-native-router-flux": "^4.0.1",
"react-native-size-matters": "^0.1.2",
"react-native-vector-icons": "^5.0.0",
"react-redux": "^5.0.7",
"redux": "^4.0.0",
"redux-thunk": "^2.3.0"
},
"rnpm": {
"assets": [
"./assets/fonts/"
]
}
}
任何指针将不胜感激在这里…
看起来您需要babel-core
按照文档建议进行安装:https : //jestjs.io/docs/en/getting-started#using-
babel
yarn add --dev babel-jest babel-core@^7.0.0-bridge.0 @babel/core regenerator- runtime
本文向大家介绍为什么需要Babel JS?,包括了为什么需要Babel JS?的使用技巧和注意事项,需要的朋友参考一下 Babel是一个工具链,主要用于在当前和较旧的浏览器或环境中将ECMAScript 2015+代码转换为JavaScript的向后兼容版本。Babel的插件允许您立即使用新语法,而无需等待浏览器支持。 使用babel JS的主要原因是- 语法转换(最新的JS语法为向后兼容的语法。
从 Babel v7 开始,所有针对处于标准提案阶段的功能所编写的预设(stage preset)都已被弃用。 请查看 此篇博客文章 了解更多信息。 有关升级说明,请参与 这份 README。 Install npm install --save-dev @babel/preset-stage-0 Usage Via .babelrc (Recommended) .babelrc { "pr
我尝试了几种解决方案,但我无法让它们中的任何一个发挥作用。 这是我的代码:
我正在使用以下代码: xlsx文件本身有25,000行,每行有500列的内容。在调试过程中,我看到我创建XSSFWorkbook的第三行,需要很多时间(1小时!)来完成这个语句。 有没有更好的方法来访问原始xlsx文件的值?
问题内容: 我正在尝试将Webpack与Babel一起使用来编译ES6资产,但是却收到以下错误消息: 这是我的Webpack配置的样子: 这是利用Webpack的中间件步骤: 我所有的index.js文件正在做的事情是导入react,但是似乎“ babel-loader”无法正常工作。 我正在使用’babel-loader‘6.0.0。 问题答案: 您需要安装预设: 然后配置:
出于性能的考虑,我们会对模块和组件进行按需加载。 按需加载组件 通过 umi/dynamic 接口实现,比如: import dynamic from 'umi/dynamic'; const delay = (timeout) => new Promise(resolve => setTimeout(resolve, timeout)); const App = dynamic({ loa