gistfile1.txt

class Example {
    
    let statusItem = NSStatusBar.system.statusItem(withLength: NSStatusItem.variableLength)   
    Let menubarStringValue = "example"

    func updateValue() {
        if #available(OSX 10.15, *){
            let attributes = [NSAttributedString.Key.font: NSFont.monospacedSystemFont(ofSize: NSFont.systemFontSize(for: self.statusItem.button!.controlSize), weight: NSFont.Weight.medium)]
            let attrString  = NSAttributedString(string: (self.menubarStringValue), attributes: attributes)
        } else {
            let attributes = [NSAttributedString.Key.font: NSFont(name: "Monaco", size: NSFont.systemFontSize(for:self.statusItem.button!.controlSize))]
            let attrString  = NSAttributedString(string: (self.menubarStringValue), attributes: attributes as [NSAttributedString.Key : Any])
        }
        self.statusItem.button?.attributedTitle = (attrString)
    }
}