Invalid DOM property for dash-case SVG attributes, such as stroke-width

[csepulv]

If your SVG component has properties like stroke-width, you get the following console warning.

Warning: Invalid DOM property `stroke-width`. Did you mean `strokeWidth`?
    in path (created by MorphTransition)
    in svg (created by MorphTransition)
    in MorphTransition (created by MorphReplace)
    in MorphReplace (created by App)
    in div (created by App)
    in App

It would seem strokeWidth (camelCase) should be used instead, but helpers.js and normalizeSvg.js expect the dash-case versions.

Is there a reason it doesn't use camelCase, as would seem more typical in React? Any idea on how to get rid of the warning?