lemma/frontend/webpack.config.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const webpack = require('webpack');

module.exports = (env, argv) => {
  const isProduction = argv.mode === 'production';

  return {
    entry: './src/index.js',
    output: {
      path: path.resolve(__dirname, 'dist'),
      filename: 'bundle.js',
    },
    module: {
      rules: [
        {
          test: /\.(js|jsx)$/,
          exclude: /node_modules/,
          use: ['babel-loader'],
        },
        {
          test: /\.scss$/,
          use: ['style-loader', 'css-loader', 'sass-loader'],
        },
        {
          test: /\.css$/,
          use: ['style-loader', 'css-loader'],
        },
      ],
    },
    plugins: [
      new HtmlWebpackPlugin({
        template: './public/index.html',
      }),
      new webpack.DefinePlugin({
        'window.API_BASE_URL': JSON.stringify(
          isProduction ? '/api/v1' : 'http://localhost:8080/api/v1'
        ),
      }),
    ],
    devServer: {
      static: {
        directory: path.join(__dirname, 'public'),
      },
      port: 3000,
      open: true,
    },
  };
};