SwiftUI ViewModifier - add kerning

Question

Is there a way to build a view modifier that applies custom font and fontSize, as the below working example, and have in the same modifier the possibility to add kerning as well?

struct labelTextModifier: ViewModifier {
    var fontSize: CGFloat

    func body(content: Content) -> some View {
        content
            .font(.custom(Constants.defaultLabelFontSFProDisplayThin, size: fontSize))
    }
}

extension View {   
    func applyLabelFont(size: CGFloat) -> some View {
        return self.modifier(labelTextModifier(fontSize: size))
    }
}

The above works well, however i cannot figure it out how to add kerning to the modifier as well

tried

content
    .kerning(4)

, but did not work.

Suggestions?

Answer 1

Alternate is to use Text-only modifier, like

extension Text {   
    func applyLabelFont(size: CGFloat, kerning: CGFloat = 4) -> Text {
        self
          .font(.custom(Constants.defaultLabelFontSFProDisplayThin, size: size))
          .kerning(kerning)
    }
}