Woopitang; the Web Audio driver and simple OSC receiver work now for scsynth.wasm: https://diode.zone/videos/watch/81f255f4-13f3-4038-ae38-8d4de3ce2a2c

online test (needs Chrome/Chromium for now): https://sciss.de/temp/scsynth.wasm/

Exciting things becoming possible for SuperCollider in 2021