Issue with webpack HMR not loading the CSS files

I'm encountering an issue with a simple webpack configuration:

var path = require("path");
var HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = {
  module: {
    rules: [
      {
        test:/\.css$/,
        use:['style-loader','css-loader']
      }
    ]
  },
    plugins: [
    new HtmlWebpackPlugin({
        hash: true,
        filename: 'index.html',
        title: 'My Awesome application',
        myPageHeader: 'Hello World',
        template: './src/index.html',
      })
    ],
    devServer: {
      port: 8000,
      hot: true
    },

};

Interestingly, when I set "hot : false" it works perfectly fine and my CSS is loaded. However, if I switch to "hot: true", although I can see the HTML content, the styling is not applied.

"webpack": "^4.16.0",
"webpack-cli": "^3.0.8",
"webpack-dev-server": "^3.1.4"

In addition, if I build using webpack and then manually open dist/index.html in my browser, everything works as expected.

In my index.js file, I import my CSS like this:

import './styles/app.css';

~

Answer №1

After removing the hot: true and replacing it with the --hot option in my script, I noticed that the command line version automatically added a plugin.

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