Allows you to re-launch a Cocoa app

Swift 4 - NSApp Relaunch.swift

import Cocoa



public extension NSApplication {
    
    public func relaunch(afterDelay seconds: TimeInterval = 0.5) -> Never {
        let task = Process()
        task.launchPath = "/bin/sh"
        task.arguments = ["-c", "sleep \(seconds); open \"\(Bundle.main.bundlePath)\""]
        task.launch()
        
        self.terminate(nil)
        exit(0)
    }
}