let options = CGWindowListOption(arrayLiteral: .excludeDesktopElements, .optionOnScreenOnly)
    let windowsListInfo = CGWindowListCopyWindowInfo(options, CGWindowID(0))
    let windowsList = windowsListInfo as NSArray? as? [[String: AnyObject]]
    let visibleWindows = windowsList?.filter{ $0["kCGWindowLayer"] as! Int == 0 }

    for window in visibleWindows! {
        let windowTitle = window["kCGWindowOwnerName"] as! String
        let windowNumber = window["kCGWindowNumber"] as! Int32

        if windowNumber == 124 { // Safari
            let nsWindow = NSApp.window(withWindowNumber: Int(windowNumber))
            nsWindow?.cascadeTopLeft(from: NSPoint(x: 100.0, y: 100.0))
            nsWindow?.setFrameTopLeftPoint(NSPoint(x: 100.0, y: 100.0))
        }
    }
}

NSApp.window(withWindowNumber: Int(windowNumber))

let pid = window["kCGWindowOwnerPID"] as? Int32 {
let app = NSRunningApplication(processIdentifier: pid)
app?.activate(options: .activateIgnoringOtherApps)