Configuring Babel source maps with AVA.

[make-github-pseudonymous-again]

I am usingc8 on top of AVA that uses babel to transpile the sources on the fly. Is it expected that sourceMaps: "inline" works but sourceMaps: true does not? In the sense that the coverage reports are correct with the first, and incorrect with the second. Same issue when using nyc instead of c8. Perhaps it would work without inline source maps if there was an intermediate step generating .js and .map files on disk. Would ava be responsible to make this seamless?