It's a short (1min) video demonstrating a native GUI app written in TypeScript running on ESP32 and WaveShare display. The intriguing part is a TypeScript to C++ compiler mentioned at the end, with a link to:
https://geastack.com/
Unfortunately no open-source code or technical details yet on how the compiler works. Cool idea though, bringing the familiar workflow of web languages (TS/JSX/CSS) to
embedded.