webpack.dev.js

const path = require('path');
const merge = require("webpack-merge");
const Dotenv = require('dotenv-webpack')
const common = require("./webpack.common.js");
const { resolve } = require('path');
const apiMocker = require('mocker-api');

const HOST = process.env.HOST || "0.0.0.0";
const PORT = process.env.PORT || "9000";

module.exports = merge(common, {
  mode: "development",
  devtool: "eval-source-map",
  plugins: [
    // Inject a Google Maps API key using .env file
    new Dotenv({
      path: '.env', // Path to .env file (this is the default)
      safe: true    // Don't load env.example
    })
  ],
  devServer: {
    before (app) {
      apiMocker(app, resolve(__dirname, 'mock-api-server/api.js'), {})
    },
    contentBase: "./dist",
    host: HOST,
    port: PORT,
    compress: true,
    inline: true,
    historyApiFallback: true,
    disableHostCheck: true,
    hot: true,
    overlay: true,
    open: true
  },
  module: {
    rules: [
      {
        test: /\.css$/,
        include: [
          path.resolve(__dirname, 'src'),
          path.resolve(__dirname, 'node_modules/patternfly'),
          path.resolve(__dirname, 'node_modules/@patternfly/patternfly'),
          path.resolve(__dirname, 'node_modules/@patternfly/react-styles/css'),
          path.resolve(__dirname, 'node_modules/@patternfly/react-core/dist/styles/base.css'),
          path.resolve(__dirname, 'node_modules/@patternfly/react-core/dist/esm/@patternfly/patternfly'),
          path.resolve(__dirname, 'node_modules/@patternfly/react-core/node_modules/@patternfly/react-styles/css')
        ],
        use: ["style-loader", "css-loader"]
      }
    ]
  }
});