yfinkelstein/node-zookeeper — comment on commit 4a11a9cfd8de3414a11332bd76bd8dede6eae1d8
File: src/node-zk.cpp line 182
By ddopson:

Yes, it was unused. It looks like the original intent was to be able to call the JSON.parse method from C, but that was never done. Likely, any feature intended to be implemented would be better served by living in the JS layer.