webpack.prod.js

const path = require('path')
const webpack = require('webpack')

const HtmlWebpackPlugin = require('html-webpack-plugin')
const MiniCssExtractPlugin = require('mini-css-extract-plugin')
const CssMinimizerPlugin = require('css-minimizer-webpack-plugin')
const TerserPlugin = require('terser-webpack-plugin')

const buildPath = path.resolve(__dirname, 'dist')

const XPOS_LABELS = ["CC", "CD", "DT", "EX", "FW", "HYPH", "IN", "IN/that", "JJ", "JJR", "JJS", "LS", "MD", "NN", 
"NNS", "NP", "NPS", "PDT", "POS", "PP", "PP$", "RB", "RBR", "RBS", "RP", "SENT", "SYM", "TO", "UH", "VB", "VBD", "VBG", "VBN", "VBP", 
"VBZ", "VH", "VHD", "VHG", "VHN", "VHP", "VHZ", "VV", "VVD", "VVG", "VVN", "VVP", "VVZ", "WDT", "WP", "WP$", "WRB", "``", "\'\'", "(", ")", ",", ":"]
.map(x => JSON.stringify(x))
const DEPREL_LABELS = [ "nsubj", "obj", "iobj", "csubj", "ccomp", "xcomp", "obl", "vocative", "expl", "dislocated", 
"advcl", "advmod", "discourse", "aux", "cop", "mark", "nmod", "appos", "nummod", "acl", "amod", "det", "clf", "case", 
"conj", "cc", "fixed", "flat", "compound", "list", "parataxis", "orphan", "goeswith", "reparandum", "punct", "root", "dep"]
.map(x => JSON.stringify(x))

module.exports = {

  // https://webpack.js.org/configuration/mode/
  mode: 'production',

  // This option controls if and how source maps are generated.
  // https://webpack.js.org/configuration/devtool/
  devtool: 'source-map',

  // https://webpack.js.org/concepts/entry-points/#multi-page-application
  entry: {
    document: './src/page-document/main.js',
    login: './src/page-login/main.js',
    index: './src/page-index/main.js',
  },

  // how to write the compiled files to disk
  // https://webpack.js.org/concepts/output/
  output: {
    filename: '[name].[contenthash].js',
    path: buildPath,
    clean: true
  },

  // https://webpack.js.org/concepts/loaders/
  module: {
    rules: [
      {
        // https://webpack.js.org/loaders/babel-loader/#root
        test: /\.m?js$/i,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: [
              ['@babel/preset-env', {"useBuiltIns": "usage", "corejs": 3, "targets": "> 0.25%, not dead"}],
              '@babel/preset-react'
            ]
          }
        }
      },
      {
        // https://webpack.js.org/loaders/css-loader/#root
        test: /\.css$/i,
        use: [
          MiniCssExtractPlugin.loader,
          'css-loader'
        ]
      },
      {
        // https://webpack.js.org/guides/asset-modules/#resource-assets
        test: /\.(png|jpe?g|gif|svg)$/i,
        type: 'asset/resource'
      },
      {
        // https://webpack.js.org/guides/asset-modules/#replacing-inline-loader-syntax
        resourceQuery: /raw/,
        type: 'asset/source'
      },
      {
        // https://webpack.js.org/loaders/html-loader/#usage
        resourceQuery: /template/,
        loader: 'html-loader'
      }
    ]
  },

  // https://webpack.js.org/concepts/plugins/
  plugins: [
    new webpack.DefinePlugin({
      // The location of the midas-loop backend service, which the UI needs to communicate with.
      // This should be something like "http://your.domain.com:3000/api".
      API_ENDPOINT: JSON.stringify("http://localhost:3000/api"),
      // The probability under which a label probability provided by an NLP service is viewed as 
      // "suspicious" by the UI. Suspicious labels are graphically indicated as such in the UI.
      HEAD_SUSPICIOUS_PROBABILITY_THRESHOLD: 0.9,
      XPOS_SUSPICIOUS_PROBABILITY_THRESHOLD: 0.9,
      SSPLIT_SUSPICIOUS_PROBABILITY_THRESHOLD: 0.9,
      XPOS_LABELS: XPOS_LABELS,
      DEPREL_LABELS: DEPREL_LABELS,
    }),
    new HtmlWebpackPlugin({
      template: './src/page-document/tmpl.html',
      inject: true,
      chunks: ['document'],
      filename: 'document.html'
    }),
    new HtmlWebpackPlugin({
      template: './src/page-login/tmpl.html',
      inject: true,
      chunks: ['login'],
      filename: 'login.html'
    }),
    new HtmlWebpackPlugin({
      template: './src/page-index/tmpl.html',
      inject: true,
      chunks: ['index'],
      filename: 'index.html'
    }),
    new MiniCssExtractPlugin({
      filename: '[name].[contenthash].css',
      chunkFilename: '[id].[contenthash].css'
    })
  ],

  // https://webpack.js.org/configuration/optimization/
  optimization: {
    minimize: true,
    minimizer: [
      // https://webpack.js.org/plugins/terser-webpack-plugin/
      new TerserPlugin({
        parallel: true
      }),
      // https://webpack.js.org/plugins/mini-css-extract-plugin/#minimizing-for-production
      new CssMinimizerPlugin()
    ]
  }
}