webpack.dev.js

const path = require('path');
const merge = require('webpack-merge');
const common = require('./webpack.common.js');

module.exports = merge(common, {
  mode: 'development',
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: '[name].js',
    publicPath: '/',
  },
  module: {
    rules: [
      {
        test: /\.(sa|sc|c)ss$/,
        use: [
          'style-loader',
          'css-loader',
          'sass-loader',
        ],
      },
      {
        test: /\.(png|svg|jpe?g|gif|pdf|mp3)$/i,
        use: {
          loader: 'file-loader',
          options: {
            name: 'assets/[name].[ext]',
          },
        },
      },
    ],
  },
  devtool: 'inline-source-map',
  devServer: {
    contentBase: './dist',
    historyApiFallback: true,
    hot: true,
    port: 8080,
    proxy: {
    },
  },
});