Incorrect code coverage report

For unknown reason, code coverage report generated by c8 is showing incorrect result despite all branches are covered.

I even tested it with compiled JavaScript files by swc and the result remains unchanged when there is no additional code generated found at the said line.

Actual behavior

There is 1 additional branch has been reported not being covered.

Expected beahvior

All lines are covered and c8 should be able to pick up the result correctly.

How to test

1. Run npm i to install depedencies
2. Run npm t to run test with code coverage collection