For vim: https://github.com/wellle/context.vim
For neovim (much higher performance in my experience): https://github.com/nvim-treesitter/nvim-treesitter-context
I believe there's now also a VS code plugin for the same behavior, but I don't know what it's called.
https://code.visualstudio.com/updates/v1_70#_editor-sticky-s...
It's called "sticky scroll". It's a relatively new feature of VS Code.
For vim: https://github.com/wellle/context.vim
For neovim (much higher performance in my experience): https://github.com/nvim-treesitter/nvim-treesitter-context
I believe there's now also a VS code plugin for the same behavior, but I don't know what it's called.