Dead external link.

[MicahZoltu]

TypeScript-Website/packages/documentation/copy/en/release-notes/TypeScript 2.6.md

Line 15 in 62f87a8

For some background on what variance means for function types check out [What are covariance and contravariance?](https://www.stephanboyer.com/post/132/what-are-covariance-and-contravariance).

This link is dead, and I'm not sure what to link to instead.

[shuuji3]

While I couldn't find another URL for the page, it looks like the blog was down due to Heroku's decision to shut down its free plan.

I found the archived page by Internet Archive: http://web.archive.org/web/20220823104433/https://www.stephanboyer.com/post/132/what-are-covariance-and-contravariance Maybe we could temporarily replace the dead link with this one.

[typescript-bot]

Hello! As per #2804, we are automatically closing all open issues. Please see #2804 for a description of what issues and PRs can be accepted going forward.

[agilgur5]

Looks like this was fixed by OP in #2808

[shuuji3]

Thanks for the heads-up.🙂 It seems that the new link was broken again so I'd raised a new PR to ensure the stable URL.