How to generate book.js from book.dat

[nghiatruong]

I would like to build a book myself for Javascript code, but when I tried on Eleeye, the tool generate book.dat only.
Could you guide me how to generate book.js?

[auntyellow]

Structure of book.dat is very simple. See https://github.com/xqbase/eleeye/blob/master/eleeye/book.h