Calculate minimum width for UILabel for better headlines

UILabel+smallestWidth.swift

extension UILabel {
    /// Minimum width fitting text in alotted number of lines
    var minimumWidth:CGFloat {
        get {
            guard intrinsicContentSize.width >= bounds.width || intrinsicContentSize.height >= ceil(font.lineHeight) * CGFloat(numberOfLines)
                else { return intrinsicContentSize.width }
            let rect = self.textRect(forBounds: CGRect.init(origin: .zero, size: CGSize(width: bounds.width, height: .infinity)), limitedToNumberOfLines: self.numberOfLines)
            return calculateWidth(0 ..< rect.width, height: rect.height)
        }
    }
    
    private func calculateWidth(_ range:Range<CGFloat>, height maxHeight:CGFloat = .infinity) -> CGFloat {
        guard range.upperBound - range.lowerBound > 10 else { return ceil(range.upperBound) }
        let pivot = range.lowerBound + (range.upperBound - range.lowerBound) / 2
        let box = self.textRect(forBounds: CGRect(origin: .zero, size: CGSize(width: pivot, height: maxHeight)), limitedToNumberOfLines: 0)
        if box.minY < 0 { return calculateWidth(pivot ..< range.upperBound, height: maxHeight) }
        else { return calculateWidth(range.lowerBound ..< pivot, height: maxHeight) }
    }
}