Show redirected links

Today gaxios quietly follows redirects. Folks may want to see this as a warning, so we should show that info and give an option to make that show up as an error.

[tbeseda]

👋 I realize this issue is a bit old, but I wanted to chime in with a use case for failing or even detecting 301/2 redirects with linkinator.

We use linkinator to find busted links across a large-ish docs site. There’s an internal redirect map/middleware for old known paths forwarding to new paths. We often used these deprecated paths internally in the docs. Ideally those internal links would be discoverable so they can be updated to the newer path and not require a hit to the redirect middleware.

[bobbyg603]

It seems that when Linkinator follows 301 redirects and finds relative paths, it assumes that the path is relative to the original URL, however in the cases where the domain has changed it seems to be detecting 404s for URLs that are otherwise valid.