currentColor is invalid color?

[kubiqsk]

currentColor is one of the most used colors in web SVGs, it's definitely not invalid color, so please allow this

Thank you for a great app

[RazrFalcon]

Only an external currentColor is not supported. svgcleaner has no way of knowing it.
In theory, we could try preserving it, but it is complicated.

[kubiqsk]

It doesn't need any context, it's like CSS variable and it's working everywhere
https://caniuse.com/?search=currentColor

currentColor is applied from the closest parent element which has some color

so when you use SVG on web eg. for icons in buttons, then it should load color from button text and on hover (mouseover) it should change with text color

next usecase is switching color themes
etc... there are many scenarios like that

your validator should just skip this, ignore it or maybe you have some whitelist there?
I didn't really investigate your source code

[RazrFalcon]

As I've said, this is not supported and hard to implement. svgcleaner is designed for self-contained SVGs.