Visual Studio 2019 Extension That Shows Errors inside the Code Editor

I've had to rebuild my machine lately and lost all the Visual Studio extensions I had installed.

I did have one that displayed error messages inside the code block, but for the life of me I cannot find it on the marketplace.

It does very similar things to this extension:

https://marketplace.visualstudio.com/items?itemName=AlexanderGayko.ShowInlineErrors

But the trouble with the extension above, is it writes the error over existing code, which makes it difficult to read.