// webpack.config.js
const webpack = require("webpack");
const path = require("path");
const HtmlWebpackPlugin = require("html-webpack-plugin");

module.exports = {
  mode: "development",
  target: "web",
  devtool: "cheap-module-source-map",
  entry: "./src/index",
  output: {
    path: path.resolve(__dirname, "build"),
    publicPath: "/",
    filename: "bundle.js"
  },
  devServer: {
    stats: "minimal",
    overlay: true,
    historyApiFallback: true,
    disableHostCheck: true,
    headers: { "Access-Control-Allow-Origin": "*" },
    https: false
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: "src/index.html",
      favicon: "src/favicon.ico"
    })
  ],
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        use: ["babel-loader", "eslint-loader"]
      },
      {
        test: /(\.css)$/,
        use: ["style-loader", "css-loader"]
      }
    ]
  }
};

// package.json
{
  "name": "react-custom",
  "version": "1.0.0",
  "description": "custom react env",
  "main": "index.js",
  "scripts": {
    "start": "NODE_ENV=development webpack-dev-server --config webpack.config.js --port 3000"
  },
  "author": "Author Name",
  "license": "MIT",
  "devDependencies": {
    "@babel/core": "^7.7.4",
    "babel-eslint": "^10.0.3",
    "babel-loader": "^8.0.6",
    "babel-preset-react-app": "^9.0.2",
    "css-loader": "^3.2.1",
    "eslint": "^6.7.2",
    "eslint-loader": "^3.0.2",
    "eslint-plugin-import": "^2.18.2",
    "eslint-plugin-react": "^7.17.0",
    "html-webpack-plugin": "^3.2.0",
    "style-loader": "^1.0.1",
    "webpack": "^4.41.2",
    "webpack-cli": "^3.3.10",
    "webpack-dev-server": "^3.9.0"
  },
  "engines": {
    "node": ">=8"
  },
  "dependencies": {
    "react": "^16.12.0",
    "react-dom": "^16.12.0"
  }
}