Further confusing is that Open CASCADE

https://github.com/Open-Cascade-SAS

is also written in C++ and used to be called CAS.CADE before it was open-sourced

https://en.wikipedia.org/wiki/Open_Cascade_Technology#Histor...

It wouldn't be confusing if the title didn't use a capital letter for node-based.

Agree, many may never give this a look simply being "node-based" assuming it has anything to do with node.js

It got me. I went into the /src directory so I could find out if you could actually write a reasonable image editor in javascript, and was confused to find .cpp files.