Users with more than 1000 reputation points can see delete votes in the post timeline, but it's much more convenient to have this information fetched and added to the sidebar:
Note that the script does nothing for users under 1000 reputation points
How it works
- It fetches the timeline for all posts with a score lower than 0 and counts delete votes until it sees an "undelete" event.
- It works in the review queues but makes an exception for a score lower than 1, instead of 0, for the "Low quality posts" queue. This applies to all posts, not just the one under review.
- To avoid rate limits, it makes no more than 5 concurrent fetches.
It fetches the timelines, because the delete votes are not available at the Stack Exchange API, see API returns delete vote count for questions, but not for answers.
Across the Stack Exchange network.
For bugs, please post here. Comments are fine too.