node.js 找不到模块 babel-preset-es2015
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Cannot find module babel-preset-es2015
提问by j sharma
Getting same error again again: Error: Cannot find module 'babel-preset-es2015'.
再次出现同样的错误：Error: Cannot find module 'babel-preset-es2015'.
Full error log:
完整的错误日志：
ERROR in ./main.js Module build failed (from ./node_modules/babel-loader/lib/index.js): Error: Cannot find module 'babel-preset-es2015' from 'C:\Users\hp\Desktop\reactApp'
at Function.module.exports [as sync] (C:\Users\hp\Desktop\reactApp\node_modules\resolve\lib\sync.js:43:15)
at resolveStandardizedName (C:\Users\hp\Desktop\reactApp\node_modules\@babel\core\lib\config\files\plugins.js:101:31)
at resolvePreset (C:\Users\hp\Desktop\reactApp\node_modules\@babel\core\lib\config\files\plugins.js:58:10)
at loadPreset (C:\Users\hp\Desktop\reactApp\node_modules\@babel\core\lib\config\files\plugins.js:77:20)
at createDescriptor (C:\Users\hp\Desktop\reactApp\node_modules\@babel\core\lib\config\config-descriptors.js:154:9)
at items.map (C:\Users\hp\Desktop\reactApp\node_modules\@babel\core\lib\config\config-descriptors.js:109:50)
at Array.map ()
at createDescriptors (C:\Users\hp\Desktop\reactApp\node_modules\@babel\core\lib\config\config-descriptors.js:109:29)
at createPresetDescriptors (C:\Users\hp\Desktop\reactApp\node_modules\@babel\core\lib\config\config-descriptors.js:101:10)
at passPerPreset (C:\Users\hp\Desktop\reactApp\node_modules\@babel\core\lib\config\config-descriptors.js:58:96) @ multi (webpack)-dev-server/client?http://localhost:8080 (webpack)/hot/dev-server.js ./main.js main[2]
回答by Pretseli
For Babel version 6 the package name is babel-preset-es2015and for Babel version 7 the package name is @babel/preset-es2015.
对于 Babel 版本 6，包名称是babel-preset-es2015，对于 Babel 版本 7，包名称是@babel/preset-es2015.
From the error it seems that you're using version 7. The es20XX-presetsare deprecated, so I recommend you switch to @babel/preset-env.
从错误来看，您似乎使用的是版本 7。es20XX-presets已弃用，因此我建议您切换到@babel/preset-env.
First install the preset (using npm):
首先安装预设（使用npm）：
npm install --save-dev @babel/preset-env
Then add the preset to your .babelrc
然后将预设添加到您的 .babelrc
{
presets: ["@babel/preset-env"]
}
回答by Yan Pak
Thing in that the babel 7 uses @babel/preset-env. Other presets are deprecated
Here saying about this https://babeljs.io/docs/en/v7-migration#yearly-preset-deprecations-blog-2017-12-27-nearing-the-70-releasehtml-deprecated-yearly-presets-eg-babel-preset-es20xx
babel 7 使用的东西@babel/preset-env。其他预设已弃用 这里说这个https://babeljs.io/docs/en/v7-migration#yearly-preset-deprecations-blog-2017-12-27-nearing-the-70-releasehtml-deprecated-yearly-预设-eg-babel-preset-es20xx
You should specify in a configuration file (I don't know if you are using Webpack or something else) preset as "@babel/preset-env". Install it through npm install --save-dev @babel/preset-env
您应该在配置文件中指定（我不知道您使用的是 Webpack 还是其他东西）预设为“@babel/preset-env”。安装通过npm install --save-dev @babel/preset-env
For example, you are using Webpack module bundler. In that case, specify like this:
例如，您正在使用 Webpack 模块捆绑器。在这种情况下，请指定如下：
use: {
loader: "babel-loader",
options: {
presets: ["@babel/preset-env"]
}
}
Here is a documentation https://webpack.js.org/loaders/babel-loader/if you suddenly will need.
如果您突然需要，这里有一个文档https://webpack.js.org/loaders/babel-loader/。
Happy coding!
快乐编码！
回答by Mr.Bhat
The error log clearly says that it can not find the module. Cannot find module 'babel-preset-es2015' from 'C:\Users\hp\Desktop\reactApp' at Function.module.exports [as sync]Just run this command to install packages
错误日志清楚地表明它找不到模块。Cannot find module 'babel-preset-es2015' from 'C:\Users\hp\Desktop\reactApp' at Function.module.exports [as sync]只需运行此命令即可安装软件包
npm install --save-dev @babel/preset-es2015
npm install --save-dev @babel/preset-es2015
Also check your .babelrc
还要检查你的 .babelrc
More information here - > https://babeljs.io/docs/en/babel-preset-es2015
更多信息在这里 - > https://babeljs.io/docs/en/babel-preset-es2015
