In order to properly handle this file type, an appropriate loader may be necessary as there are currently no configured loaders to process this CSS file

As a beginner, I'm still learning the ropes. I've integrated the babel loader into my webpack configuration for a react application. However, it seems to be having trouble processing CSS files. Interestingly, when I remove the CSS file from my project, everything works perfectly fine. Here's the error message that's popping up:

ERROR in ./public/App.css 1:0
Module parse failed: Unexpected token (1:0)
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
> #root, #window, body{
|   min-height: 100vh;
|   position: relative
 @ ./src/app/App.js 2:0-30
 @ ./src/index.js 3:0-28 4:50-53

Here is a snippet of my webpack configuration:

const path = require('path');

module.exports = {
  entry: './src/index.js',
  output: {
    path: __dirname + '/public',
    filename: 'bundle.js'
  },
  module: {
    rules: [
      {
        test: /\.jsx?$/,
        exclude: /node_modules/,
        loader: 'babel-loader',
        options: {
          presets: ['@babel/preset-env', '@babel/preset-react'],
        },
      },
    ],
  },
};

This is my entry point index.js:

import React from 'react';
import ReactDOM from 'react-dom';
import App from './app/App';

ReactDOM.render(<App />, document.getElementById('root'));

Lastly, here is my App.js file which is referenced in index.js:

import '../../public/App.css'
import React from "react";
import { Menu, Navbar } from '../components';

// Mobile-friendly menu app with no ordering functionality.

const App = () => {
  return (
    <div id='window'>
      Hello! 
      <Menu />
      <Navbar/>
    </div>
  );
};

export default App;

Answer №1

When working with Babel, it's important to note that it is designed to specifically handle JavaScript files. If you encounter an error message indicating the need for a CSS loader, you'll have to incorporate one into your configuration.

Referencing the documentation provided by Webpack:

You will discover that employing two loaders is necessary for processing CSS files effectively.

To address this issue, follow these steps:

  • Start by installing the style loader:
npm install style-loader
  • Next, add the css loader to your dependencies:
npm install css-loader
  • Finally, update your Webpack configuration by supplementing the rules array with the following:
rules: [
  {
    test: /\.jsx?$/,
    exclude: /node_modules/,
    loader: 'babel-loader',
    options: {
      presets: ['@babel/preset-env', '@babel/preset-react'],
    },
  },
  {
    test: /\.css$/i,
    use: ["style-loader", "css-loader"],
  },
],

By implementing these changes, you should be able to resolve the encountered error successfully.

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