alt Hacker NewsCodeMirror is great, but still requires a lot of clientside JavaScript. I wonder if it would be possible to create a code editor in the same style OverType[0], where the editor is basically just an HTML textarea. You would need 70% less JavaScript code to do exactly the same thing, and it supports syntax highlighting out of the box[1].
I’ve tried to create the minimalist version of this with Revise.js. The main surface area is a custom element called a `<content-area>`. The OverType library you linked to uses a time-old technique where you essentially put a duplicate copy of the content over a `<textarea>` to highlight it but this doesn’t really work in mobile and it messes with the selection. I’ve tried to grapple with `contenteditable` directly with my solution, but it does try to use less JavaScript and it does try to be more minimal.
https://github.com/bikeshaving/revise https://revise.js.org https://revise.js.org/blog/introducing-revise/