Comment by flohofwoe

Here's a followup blogpost I wrote a few months later where I did a little experimental Typescript WebGL-wrapper (it was just one weekend, so not complete):

http://floooh.github.io/2016/10/24/altai.html

I think something like this could be used as a minimal wrapper for WebGPU, with WebGL2 and WebGL as fallback paths (shaders will be a problem though).