require('dotenv').config()

const webpack = require('webpack')
const path = require('path')
const TerserPlugin = require('terser-webpack-plugin')
// const CleanWebpackPlugin = require('clean-webpack-plugin')
// const Visualizer = require('webpack-visualizer-plugin');

module.exports = {
  mode: "production",
  entry: {
    main: './frontend/index.js',
  },
  output: {
    path: path.resolve(__dirname, 'static/js/dist'),
    filename: 'bundle.js',
  },
  plugins: [
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': JSON.stringify("production"),
      'process.env.S3_HOST': JSON.stringify(process.env.S3_HOST || ""),
      'process.env.API_HOST': JSON.stringify(process.env.API_HOST || ""),
    }),
    new TerserPlugin(),
    new webpack.optimize.AggressiveMergingPlugin(),
    // new Visualizer({
    //   filename: './statistics.html'
    // })
  ],
  optimization: {
    minimize: true,
    minimizer: [new TerserPlugin({
      terserOptions: {
        compress: {
          // drop_console: true,
        }
      }
    })],
  },
  resolve: {
    alias: {
      // "react": "preact/compat",
      // "react-dom/test-utils": "preact/test-utils",
      // "react-dom": "preact/compat",
      // 'vcat-header': path.resolve(__dirname, '../app/components/common/header.component.js'),
      // 'vcat-auth-reducer': path.resolve(__dirname, '../app/reducers/auth.reducer.js'),
    }
  },
  devtool: 'cheap-module-source-map',
  module: {
    rules: [
      {
        test: /\.css$/,
        use: ['style-loader', 'css-loader']
      },
      {
        test: /\.js$/,
        // include: path.resolve(__dirname, 'client'),
        exclude: /(node_modules|bower_components|build)/,
        loader: 'babel-loader',
        options: {
          presets: ['@babel/preset-react'],
          plugins: [
            "@babel/plugin-transform-runtime",
          ],
        }
      }
    ]
  },
};