Any good example for a split screen for text and another process?

[hanpham32]

I see that JoinHorizontal only accepts and renders strings, but I'm wanting to render a process split with strings. Is that possible? I'm thinking to use tmux and manage the panes externally. The process that I want to join is a vim/nvim editor. Is there a more efficient way to approach this? If anyone has any demo or example of this they have built that would be really useful too. Or does textarea support vim key-binding? That'd be cool to see. Thanks.