Function return

inject.js:578–584

(...returnArgs)

          }
        },
        async return(...returnArgs) {
          observer.closeConnection(stream);
          if (typeof iterator.return === 'function') {
            return iterator.return(...returnArgs);
          }
          return { done: true };
        },
        async throw(...throwArgs) {
          const error = throwArgs[0] || new Error('ReadableStream iterator error');
          observer.reportError(error);