generate a macos notification banner' in swift

To generate a macOS notification banner in Swift, you can use the NSUserNotification class and the UserNotificationCenter framework.

Here is an example code snippet:

main.swift
import Foundation
import UserNotifications

func sendNotification(title: String, subtitle: String, informativeText: String) {
    let notification = NSUserNotification()
    notification.title = title
    notification.subtitle = subtitle
    notification.informativeText = informativeText
    
    let notificationCenter = UserNotificationCenter.current()
    notificationCenter.deliver(notification)
}
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You can then call the sendNotification function with the appropriate title, subtitle, and informativeText arguments to send a notification banner to the user.

Make sure to include the appropriate entitlements in your macOS app's project settings to enable notifications.