code: function buildNamespaceReexport(meta, namespace, checkExport) {
      checkExport();
      return babelTemplate.statement(`
          (function() {
            for (var key in NAMESPACE) {
              if (NAMESPACE == null || !NAMESPACE.hasOwnProperty(key) || key === 'default' || key === '__esModule') return;
              VERIFY_NAME_LIST;
              exports[key] = NAMESPACE[key];
            }
          })();
      `)({
          NAMESPACE: namespace,
          VERIFY_NAME_LIST: meta.exportNameListName
              ? babelTemplate.statement(`
                  if (Object.prototype.hasOwnProperty.call(EXPORTS_LIST, key)) return;
              `)({EXPORTS_LIST: meta.exportNameListName})
              : null
      });
  }
docs: Create a re-export initialization loop for a specific imported namespace.