How to make a review comment on a PR.

[scaredmonad]

This example shows how to reply to an opened issue:

app.on('issues.opened', async (context) => {
  const issueComment = context.issue({
    body: 'Thanks for opening this issue!',
  });
  await context.octokit.issues.createComment(issueComment);
});

I would like to know how the same could be achieved with a PR. Apparently, this doesn't work:

app.on('pull_request.opened', async (context) => {
  const reviewComment = context.pullRequest({ body: "some text" });
  await context.octokit.pulls.createReview(reviewComment);
});

[scaredmonad]

Ok, I went over the REST API docs on this and it was very vague but it seems the 1st example is exactly what I was looking for:

Creates a review comment in the pull request diff. To add a regular comment to a pull request timeline, see "Create an issue comment."