isExportedWithName(binding) {
      // short circuit
      if (!this.topLevel) {
        return false;
      }

      const refs = binding.referencePaths;

      for (const ref of refs) {
        if (ref.isExportNamedDeclaration()) {
          return true;
        }
      }

      // default
      return false;
    }
Tells if a binding is exported as a NamedExport - so as to NOT mangle

Babel treats NamedExports as a binding referenced by this NamedExport decl
@param {Binding} binding