codeOwners.getOwners does not bubble up till finding an ownership in CODEOWNER file

[doctomansion]

Hi,

Here is the typical piece of code I have in my setup:

{
  name: 'Test',
  eval: ({ codeOwners }) =>
    glob.sync('pattern').flatMap((filePath) => {
      const code = fs.readFileSync(filePath).toString()
      return [
        ...code.matchAll(/regex/gm)
      ].map((match) => {
        const lineNumber = code.substring(0, match.index).split('\n').length
        return {
          filePath,
          text: `${filePath}:${lineNumber}`,
          lineNumber,
          owners: codeOwners.getOwners(filePath),
        }
      })
    }),
}

I'm relying on codeOwners.getOwners(filePath) to set the correct ownership from a CODEOWNER file at the root of the repository.

I observed two things:

1. I need to prefix filePath with a / for having a match if it's declared in CODEOWNER
2. The search does not bubble up till finding an ownership. For instance, if CODEOWNER only defines /packages/foo/ @foo, calling codeOwners.getOwners('/packages/foo/bar/john.txt') will return nothing