Coverage decreased (-0.2%) to 65.553% when pulling 3e6cc3c on jangxx:master into 7022d3d on fbbdev:master.

Thank you for reporting this and for the fix. I'm sorry for answering years later; I had to take a long hiatus from maintaining this package for personal reasons, and I also struggled to understand your fix.

For future reference, I'm gonna add an explanation below:

When the Node Stream API invokes the _read method, it expects the push method to be called with a non-empty data chunk before the _read method is invoked again; moreover, the _read method is never invoked again until push returns false.

We remember this condition by setting the _canPush property to true; however, because of how the _read method is written, _canPush is never set when our implementation-specific buffer is empty, leading to a stall in the data flow.