webpack.config.js

/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Looker Data Sciences, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

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

const BundleAnalyzerPlugin = require('webpack-bundle-analyzer')
  .BundleAnalyzerPlugin

// Create .env file if it does not exist
if (!fs.existsSync('.env')) {
  fs.copyFileSync('.env_example', '.env')
}
dotenv.config()
if (!process.env.POSTS_SERVER_URL) {
  // webpack 5 is stricter about environment variables. The POSTS_SERVER_URL
  // environment variable was not mentioned in the README so default it for
  // those developers who may have created a .env file without the variable.
  process.env.POSTS_SERVER_URL = 'http://127.0.0.1:3000'
}

const PATHS = {
  app: path.join(__dirname, 'src/index.tsx'),
}

module.exports = {
  entry: {
    app: PATHS.app,
  },
  output: {
    path: __dirname + '/dist',
    filename: 'bundle.js',
  },
  module: {
    rules: [
      {
        test: /\.(js|jsx|ts|tsx)$/,
        loader: 'babel-loader',
        exclude: /node_modules/,
        include: /src/,
        sideEffects: false,
      },
    ],
  },
  resolve: {
    extensions: ['.tsx', '.ts', '.js'],
    fallback: { buffer: false },
  },
  devtool: 'source-map',
  plugins: [
    new BundleAnalyzerPlugin({
      analyzerMode: process.env.ANALYZE_MODE || 'disabled',
    }),
    new webpack.EnvironmentPlugin([
      'GOOGLE_CLIENT_ID',
      'GITHUB_CLIENT_ID',
      'AUTH0_CLIENT_ID',
      'AUTH0_BASE_URL',
      'POSTS_SERVER_URL',
    ]),
  ],
}