Empty code coverage on transpiled JS code

[gpradeepjain]

I am inside a folder that has the below structure
src/ -> this has *.js and *.js.map
test/ -> this has *.js and *.js.map

I run the command c8@10.1.3/node_modules/c8/bin/c8.js --include src//*.js mocha@11.1.0/node_modules/mocha/bin/mocha.js test/unit//*.js --verbose

It does the tests but my coverage report says 0

----------|---------|----------|---------|---------|-------------------

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

=============================== Coverage summary ===============================
Statements : Unknown% ( 0/0 )
Branches : Unknown% ( 0/0 )
Functions : Unknown% ( 0/0 )
Lines : Unknown% ( 0/0 )

I tried --src src as well. But nothing worked. Does C8 work for transpiled JS code? How do I debug the above problem?

[bcoe]

@gpradeepjain could you provide a repository with a minimal reproduction please 👏

[kuba-orlik]

In my case the coverage showed as empty if I killed the running process with ctrl+C. If I run process.exit(0) to terminate the js script, then everything gets picked up