Not able to generate code coverage while using xslt4node

[Krishman Pradhan]

Hi,
I'm trying to use coverage test of mocha test and using xslt4node library
The result of mocha test is passed but the coverage executed after Ctrl+C with 0 coverage.

Sample code that I tried is :
https://github.com/Krishman23/xslt4node-client-nyc-test-coverage

npm (xslt4node) link :
https://www.npmjs.com/package/xslt4node

Environment info:
C:\Users\Asus>npm -v
8.1.2
C:\Users\Asus>node -v
v16.13.1

Actual Log:
Terminate batch job (Y/N)? ----------|---------|----------|---------|---------|-------------------

File	% Stmts	% Branch	% Funcs	% Lines	Uncovered Line #s
All files	0	0	0	0
----------	---------	----------	---------	---------	-------------------

Expected Log (Somewhat)
Terminate batch job (Y/N)? ----------|---------|----------|---------|---------|-------------------

File	% Stmts	% Branch	% Funcs	% Lines	Uncovered Line #s
All files	50	100	0	50
index.js	50	100	0	50	14-15
----------	---------	----------	---------	---------	-------------------