How can I import dwg(Autocad format) file into threejs with javascript?

I am working on loading some types of 3d models into my own webgl viewer. I am using threejs. For now, the problem is how to import dwg file into threejs. I know AutoCAD provides API that converting dwg into json that can be imported in threejs but it doesn’t work here. If it is impossible on client side, is there anyway to do this on server side?