Differentiate between releases and pre-releases

[mattnelson]

Releases can be created from tags, which can then be further classified as pre-release or the default of the latest release.

The latest release widget displays a release marked as pre-release as the latest release.

The API supports the ability to differentiate between the two.
https://developer.github.com/v3/repos/releases/#list-releases-for-a-repository

[sindresorhus]

PR welcome :)

[fregante]

The Tags endpoint doesn’t include this info and the Releases endpoint doesn’t include all tags (so it would only work if a repo uses releases)

This returns a list of releases, which does not include regular Git tags that have not been associated with a release. To get a list of Git tags, use the Repository Tags API.

The Tag object doesn’t include references to the related release either: https://developer.github.com/v4/object/tag/

The only way to do this seems to be making 2 queries and then check filter out any tags that are in prereleases.

More generically, I think we can just exclude tags that include - which seems to be used for prereleases

[kidonng]

we can just exclude tags that include -

Quite a few repos have dates in their tag names (for example YYYY-MM-DD).

[fregante]

I think we already have a condition that excludes tags that aren’t “version-like”

We’ll never catch all the edge cases but, maybe:

• exclude specifically x.y-b and x.y.z-b tags
• in our existing v4 query, also check if we have information about a tag being a pre-release or “latest release” The first one is enough

[fregante]

This is why we can't use GitHub's "latest release" feature: