LogStream failed to work for high versions of fibjs

[tgxhenry]

Here is the error. Please help chech if the incompatibility can be fixed. Thanks.

this[TO_WRITE] = new co.BlockQueue(50000);
                 ^

TypeError: co.BlockQueue is not a constructor
at new LogStream (F:\Practice\fibjs\scripts\node_modules@fibjs\logstream\lib\logstream.js:27:22)