First of all, thanks for this very helpful plugin! I created a Webflow plugin called Better Shadows using it.
That said, one thing that I'd love to see is a reverse function of getSmoothShadow() (maybe called getSmoothShadowProps()?, where the input is a css shadow declaration, and the output is a list of properties values for distance, intensity, etc. For shadows that were not generated by the package, maybe just throw and error. Do you think that would be possible?