Is there such info scroll mode? (Picture inside)

The picture below shows the side scrollbar for a file in another editor. Left marks are gutter (git) and right marks are linting errors/warnings. Blue line is current line inside the file. Scroll thumb shows the visible part. I've been experimenting with this editor and it seems a very visual way to navigate in larger files while coding. Is there such a thing for emacs? Notice this is not a "minimap". Although that would be awesome! I dream of the day where sublimity mini-map moves from experimental. ​ Here it is: https://preview.redd.it/xyvsvt3l5uo81.png?width=16&format=png&auto=webp&s=bba86570305923e0f85d421c22370e90d55bb5e4

Well there's [demap.el](https://gitlab.com/sawyerjgardner/demap.el) that adds a minimap buffer that shows a zoomed out view of the active window.