[whatwg] Singular CTM and currentTransform

[Hwang, Dongseong]

>
> Maklng path primitives and draw calls no-ops when the
> CTM is non-invertible is simple to spec, implement, test, and understand
> for developers.


I strongly agree on Justin.

I would suggest that the getter either:
> 1) throws and invalid state error if the CTM is not invertible
> 2) returns 0. In WebIDLit would look like: SVGMatrix? getTransform();


afaik, we generally avoid throwing exception. am I right?

Br, DS