docs: function getCodeExtensions() {
      const configFilepath = path.join(constants.GLOBAL_DIR, constants.GLOBAL_CONFIG);
      const extensions = [];
  
      // Parse config file
      const config = fs.readJsonSync(configFilepath, 'utf8');
      if (config.extension) {
          extensions.push(config.extension);
      }
  
      // Default
      if (extensions.length === 0) {
          extensions.push('.js');
      }
  
      return extensions;
  }