Add support for extracting NodeJE functions

Not sure how difficult this will be, or if it is even possible with the current approach.... need further investigation

Begin by reviewing the current extraction approach in the repository and investigate whether NodeJE functions can be supported. Determine the scope and feasibility first; the work is complete only when support is demonstrably implemented and extraction behavior is verified.

索引モデルが issue の本文から書いたものです。