code: async function assignLangToWebpackConfig(config, lang) {
    let langSpecificConfig = config;
  
    if (lang) {
      langSpecificConfig.lang = lang; // Make sure only ONE language config is set per Webpack build instance.
    }
  
    let langSpecificWebpackConfig = await createWebpackConfig(langSpecificConfig);
  
    if (langSpecificConfig.webpackStats) {
      langSpecificWebpackConfig.profile = true;
      langSpecificWebpackConfig.parallelism = 1;
    }
  
    webpackConfigs.push(langSpecificWebpackConfig);
  }
docs: Helper function to associate each unique language in the build config with a separate Webpack build instance (making filenames, etc unique);