Не работает webpack-dev-server?

Question

vovashaplin @vovashaplin

Не работает webpack-dev-server?

package.json

{
  "name": "frontend",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "start": "cross-env NODE_ENV=development webpack-dev-server --mode development --open",
    "build": "cross-env NODE_ENV=production webpack --mode production",
    "watch": "cross-env NODE_ENV=development webpack --mode development --watch"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "@babel/core": "^7.10.2",
    "@babel/polyfill": "^7.10.1",
    "@babel/preset-env": "^7.10.2",
    "@babel/preset-react": "^7.10.1",
    "babel-eslint": "^10.1.0",
    "babel-loader": "^8.1.0",
    "copy-webpack-plugin": "^6.0.2",
    "cross-env": "^7.0.2",
    "css-loader": "^3.5.3",
    "eslint": "^6.8.0",
    "eslint-config-airbnb": "^18.1.0",
    "eslint-loader": "^4.0.2",
    "eslint-plugin-import": "^2.20.1",
    "eslint-plugin-jsx-a11y": "^6.2.3",
    "eslint-plugin-react": "^7.19.0",
    "eslint-plugin-react-hooks": "^2.5.0",
    "extract-text-webpack-plugin": "^3.0.2",
    "file-loader": "^6.0.0",
    "html-webpack-plugin": "^4.3.0",
    "image-webpack-loader": "^6.0.0",
    "mini-css-extract-plugin": "^0.9.0",
    "node-sass": "^4.14.1",
    "optimize-css-assets-webpack-plugin": "^5.0.3",
    "react": "^16.13.1",
    "react-dom": "^16.13.1",
    "sass": "^1.26.8",
    "sass-loader": "^8.0.2",
    "style-loader": "^1.2.1",
    "terser-webpack-plugin": "^3.0.3",
    "webpack": "^4.43.0",
    "webpack-cli": "^3.3.11",
    "webpack-dev-server": "^3.11.0"
  },
  "dependencies": {
    "@ant-design/icons": "^4.2.1",
    "@babel/plugin-transform-runtime": "^7.10.1",
    "@babel/runtime": "^7.10.2",
    "ant-design": "^1.0.0",
    "antd": "^4.3.2",
    "axios": "^0.19.2",
    "bootstrap": "^4.5.0",
    "bootstrap-scss": "^4.5.0",
    "firebase": "^7.15.0",
    "formik": "^2.1.4",
    "framer-motion": "^1.11.0",
    "gsap": "^3.3.1",
    "history": "^4.10.1",
    "include-media": "^1.4.9",
    "prop-types": "^15.7.2",
    "rambda": "^5.6.1",
    "ramda": "^0.27.0",
    "react-router-dom": "^5.2.0",
    "use-react-router": "^1.0.7",
    "yup": "^0.29.1"
  }
}

webpack.config.js

const path = require('path')
// const HtmlWebpackPlugin = require('html-webpack-plugin')
const CopyPlugin = require('copy-webpack-plugin')
const MiniCssExtractPlugin = require('mini-css-extract-plugin')
 
const isDev = process.env.NODE_ENV === 'development'
const isProd = !isDev

module.exports = {
  entry: './src/index.js',
  output: {
    filename: 'main.js',
    path: path.resolve(__dirname, './static/frontend')
  },
  performance: {
    hints: false
  },
  devtool: isDev ? 'source-map' : '',
  devServer: {
    port: 1337
  },
  plugins: [
    // new HtmlWebpackPlugin({
    //   minify: {
    //     collapseWhitespace: isProd
    //   }
    // }),
    new CopyPlugin({
      patterns: [
        {
          from: path.resolve(__dirname, './src/favicon.ico'),
          to:  path.resolve(__dirname, './static/frontend')
        }
      ],
    }),
    new MiniCssExtractPlugin({
      filename: '[name].css'
    })
  ],
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: [{loader: 'babel-loader'}, isDev ? 'eslint-loader' : '']
      },
      {
        test: /\.(jpg|png|svg)$/,
        loader: 'file-loader',
        options: {
          name: 'images/[name].[ext]'
        },
      },
      {
        test: /\.sass$/,
        use: [
          {
            loader: MiniCssExtractPlugin.loader,
            options: {
              hrm: isDev,
              reloadAll: true
            },
          },
          'css-loader', 'sass-loader'
        ]
      },
      {
        test: /\.(ttf|woff|woff2|eot)$/,
        use: ['file-loader']
      }
    ]
  }
};

index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="icon" href="favicon.ico">
    <link rel="stylesheet" href="main.css">
    <title>Webpack-dev-server</title>
</head>
<body>
    <div id="app"></div>
    <script src="main.js"></script>
</body>
</html>

index.js

import './styles/index.sass';

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

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