Vitest does not support CommonJS mocking as of today.

I switched to Vitest because Jest was giving me flaky coverage results: https://github.com/nodejs/node/issues/51251

And while Vitest' coverage is stable, I had to add an indirection layer to change how I mock out calls to GitHub's API (@github/octokit).

Oh, side note: vite-node's --watch functionality does not restart the process. It does hot reloading which is different enough that it requires some rework at how you set up your app structure and callbacks.