node.js 多 (webpack)-dev-server/client 中的错误
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ERROR in multi (webpack)-dev-server/client
提问by Weijing Lin
I'm new to webpack / reactjs, just follow the tutorial here: https://www.tutorialspoint.com/reactjs/reactjs_environment_setup.htm
我是 webpack / reactjs 的新手，只需按照此处的教程进行操作：https://www.tutorialspoint.com/reactjs/reactjs_environment_setup.htm
Then after I 'npm start', I got error:
然后在我'npm start'之后，我得到了错误：
ERROR in multi (webpack)-dev-server/client?http://localhost:8080 webpack/hot/dev-server ./main.js
Module not found: Error: Can't resolve 'babel' in '/var/www/jay/reactjs/react-app'
BREAKING CHANGE: It's no longer allowed to omit the '-loader' suffix when using loaders.
You need to specify 'babel-loader' instead of 'babel'.
@ multi (webpack)-dev-server/client?http://localhost:8080 webpack/hot/dev-server ./main.js
Any ideas?
有任何想法吗？
回答by Michael Jungo
The tutorial you are following uses Webpack 1, but you are now using Webpack 2 which has some breaking changes. The error tells you that you can no longer omit -loaderwhen specifying your loaders. All you need to do is replace
您正在学习的教程使用 Webpack 1，但您现在使用的是 Webpack 2，它有一些重大更改。该错误告诉您-loader在指定加载程序时不能再省略。您需要做的就是更换
loader: 'babel'
with
和
loader: 'babel-loader'
To see what else you might need to change, you can have a look at the migration guide from the official docs: https://webpack.js.org/guides/migrating/
要查看您可能需要更改的其他内容，您可以查看官方文档中的迁移指南：https: //webpack.js.org/guides/migrating/
回答by Samueltommzy
You might have to add babel-loader as part of your dev dependencies by runnning npm install --save-dev babel-loader.
This adds babel-loaderto your package.jsonfile.
您可能需要通过运行将 babel-loader 添加为开发依赖项的一部分npm install --save-dev babel-loader。这会添加babel-loader到您的package.json文件中。
回答by Barbie
Error in angular dependencies. It may be with renaming files or folders in angular.json
角度依赖错误。它可能与重命名 angular.json 中的文件或文件夹有关
