Nice! If you want to do something similar with Excel xlsx this works: https://www.npmjs.com/package/jsonexcel Not sure how it handles huge arrays though...

Thanks for sharing, you can also use jsonexport with rowDelimiter: '\t' for a xls compatible output.

Author here... yes! Full table of contents is here http://scottfrees.com/ebooks/nodecpp/ - Chapter 7 will cover using nan.