fix(formatter): return "No comments" if not found comments

[azu]

$ GH_TOKEN=$GITHUB_TOKEN ./bin/cmd.js --repo 'azu/get-github-pr-review-comments' --projectRoot . e452b8ab4a09ab42d5dee1ba96cb34bc2f676822
No comments

formatter should handle empty comment data.

fix #6

[markburns]

Hey @azu thanks for the fix for issue #6. Actually this introduces slightly different behaviour to what I'd expect.

Now if there's a local commit that is not on the remote, the entirety of the output is just "No comments" which isn't exactly true, because if you then push, then you get a list of all the previous comments again.

What I'd expect in both scenarios is for it to list the same list of comments.

[azu]

Using SHA is tricky reason.

I want to get pull request url from current branch name or SHA, but I do not know such API.
If GitHub provide suitable API, We can improve this search logic.

get-github-pr-review-comments/src/GitHub.js

Lines 25 to 30 in decc8c8

	getPR({ owner, repo, commitSha }) {
	const repoPath = this._createRepoString({ owner, repo });
	return this.github.search.issues({
	q: `repo:${repoPath} type:pr ${commitSha}`
	});
	}

Maybe, use oldtest commit SHA(that is pushed) instead of git rev-parse HEAD resolve this issue.

[markburns]

Ah I see. So I presume you could iteratively go back through SHAs until you get a result? Sorry I haven’t looked at your code in detail.