How to render errors / warnings directly inside editor

Question

I am looking for setting / extension, which enable to render errors / warnings inside editor viewlet instead of hover and red underscore.

Answer 1

https://marketplace.visualstudio.com/items?itemName=usernamehw.errorlens

which is a fork of this extension:

https://marketplace.visualstudio.com/items?itemName=PhilHindle.errorlens