I built AREA512, software that lets you write, compile, and run Ruby code entirely on the M5Stack Cardputer.https://github.com/engneer-hamachan/area512One part I put a lot of effort into is the on-device IDE.It has a Vim-like editor with:- Syntax highlighting - Auto-indentation - Code completion - Type checkingThe code completion and type checking aren t implemented using a simple dictionary or predefined list of symbols.Instead, they re powered by picoruby-ti, a type inference engine I developed separately with the goal of making it portable enough to run on PCs, microcontrollers, and web browsers:https://github.com/engneer-hamachan/picoruby-tiI haven t seen many IDEs this feature-rich running entirely on a microcontroller.One of my goals with this project is to preserve some of the spirit of 1980s home computer culture — when the computer you used was also the computer you programmed.I d love to hear your feedback, especially if you have ideas for features that would be fun or interesting to add.Thanks for reading!