`c8 report` doesn't work on Windows

[weswigham]

• Version:
  3.2.1
• Platform:
  Windows 10

c8 report always outputs an empty report block on windows, no matter what include or exclude options you do (or don't) provide. Looking at it, it looks like the coverage files being produced on windows have paths like file:///E:/Github/TypeScript/built/local/tsc.js, which c8 then shortens to /E:/Github/TypeScript/built/local/tsc.js internally, which I'm guessing don't glob match (anything) correctly inside test-exclude, since that's not how windows-style paths are typically rooted (though I'm not sure - that last bit's a guess, since I'm not too familiar with the package).

[fraxken]

Hi,

Same problem here on Windows 10. Deleting the last / fixed the problem on my project:

v8ScriptCov.url = v8ScriptCov.url.replace(/^file:\/\/\//, '')

Best Regards,
Thomas

[sliekens]

Same problem, Windows 10 build 1809 (17763.134).

The workaround I use right now involves enabling WSL, installing Ubuntu and then running c8 from a bash prompt.