mastodon/config/webpack/configuration.js

// Common configuration for webpacker loaded from config/webpack/paths.yml

const { join, resolve } = require('path');
const { env } = require('process');
const { safeLoad } = require('js-yaml');
const { readFileSync } = require('fs');

const configPath = resolve('config', 'webpack');
const loadersDir = join(__dirname, 'loaders');
const paths = safeLoad(readFileSync(join(configPath, 'paths.yml'), 'utf8'))[env.NODE_ENV || 'development'];
const devServer = safeLoad(readFileSync(join(configPath, 'development.server.yml'), 'utf8'))[env.NODE_ENV || 'development'];

// Compute public path based on environment and CDN_HOST in production
const ifHasCDN = env.CDN_HOST !== undefined && env.NODE_ENV === 'production';
const devServerUrl = `http://${env.LOCAL_DOMAIN || devServer.host}:${devServer.port}/${paths.entry}/`;
const publicUrl = ifHasCDN ? `${env.CDN_HOST}/${paths.entry}/` : `/${paths.entry}/`;
const publicPath = env.NODE_ENV !== 'production' ? devServerUrl : publicUrl;

module.exports = {
  devServer,
  env,
  paths,
  loadersDir,
  publicUrl,
  publicPath,
};