webpack.dev.js

const path = require('path');
const { merge } = require('webpack-merge');
const common = require('./webpack.common');
const HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = merge(common, {
  mode: 'development',
  output: {
    filename: 'main.js',
    path: path.resolve(__dirname, 'dist'),
  },
  plugins: [
    new HtmlWebpackPlugin({
      title: 'MicroTasks',
      template: './src/template.html',
    }),
  ],
  devtool: 'source-map',
  devServer: {
    watchFiles: path.resolve(__dirname, 'src'),
    open: true,
  },
  module: {
    rules: [
      {
        test: /\.css$/,
        use: [
          'style-loader', 
          {
            loader: 'css-loader',
            options: {
              importLoaders: 1
            }
          },
          'postcss-loader'
        ]
      }
    ]
  }
});