webpack.config.js

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

module.exports = {
  entry: './index.js',
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'bundle.js'
  },
  module: {
    rules: [
      {
        test: /\.(png|jpg|gif|svg|jpeg)$/,
        loader: 'file-loader',
        options: 
        {
          name: '[path][name].[ext]'
        }
      },
      {
        test: /\.(scss)$/,
        use: [{
          loader: 'style-loader', // inject CSS to page
        }, {
          loader: 'css-loader', // translates CSS into CommonJS modules
        },
        {
          loader: 'postcss-loader', // Run post css actions
          options: {
            plugins: function () { // post css plugins, can be exported to postcss.config.js
              return [
                require('precss'),
                require('autoprefixer')
              ];
            }
          }
        }, {
          loader: 'sass-loader' // compiles Sass to CSS
        }
        ]
      }
    ]
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: './index.html',
      inject: 'head'
    })
  ],
  mode: 'development'
}