/*  eslint-disable*/
const merge = require('webpack-merge');
const baseConfig = require('./base.config');
const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
const OptimizeCssAssetsPlugin = require('optimize-css-assets-webpack-plugin');
const WebpackVisualizer = require('webpack-visualizer-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');

const productionConfig = env => {
  return merge([
    {
      optimization: {
        minimizer: [new UglifyJsPlugin()],
      },
      plugins: [
        new MiniCssExtractPlugin(),
        new OptimizeCssAssetsPlugin(),
        new WebpackVisualizer({ filename: './statistics_visual.html' }),
      ],
    },
  ]);
};

module.exports = env => {
  return merge(baseConfig(env), productionConfig(env));
};