import SwiftUI

extension View {
    func innerShadow<S: Shape, ST: ShapeStyle>(
        using shape: S = Rectangle(),
        stroke: ST = Color.black,
        width: CGFloat = 6,
        blur: CGFloat = 6
    ) -> some View {
        return self
            .overlay(
                shape
                    .stroke(stroke, lineWidth: width)
                    .blur(radius: blur)
                    .mask(shape)
            )
    }
}