I know we have ONNX, but it does not truly support a lot of functionality of Pytorch.
I heard Tensorflow officially does not officially support ONNX and officially Javascript by themselves.
In Pytorch, I don’t think using a Backend in C++ or backend in Python for web development always works.
I hope it will be true by the Facebook team or Pytorch for Javascript, Java in Window, and other languages( maybe using torch.jit.