AssemblyScript is a bit like that: https://www.assemblyscript.org/ https://www.assemblyscript.org/ But it goes into a slightly different direction from what yo

AssemblyScript is a bit like that: https://www.assemblyscript.org/ https://www.assemblyscript.org/ But it goes into a slightly different direction from what you want (the main motivation was a "stripped down TS for WASM", not a "stripped down TS with go routines"). It will be interesting to see how they'll tackle multithreading (now that WASM threading is out in the wild).