Notification Center Publisher protocol

NotificationPublisherProtocol.swift

/// Reflects notification publisher functionality of `NotificationCenter`.
public protocol NotificationPublisherProtocol: AnyObject {
    /// Returns a publisher that emits events when broadcasting notifications.
    /// - Parameters:
    ///   - name: The name of the notification to publish.
    ///   - object: The object posting the named notification. If `nil`, the publisher emits elements for any object
    ///     producing a notification with the given name.
    /// - Returns: A publisher that emits events when broadcasting notifications.
    func publisher(for name: Notification.Name, object: AnyObject?) -> NotificationCenter.Publisher
}

public extension NotificationPublisherProtocol {
    /// Returns a publisher that emits events when broadcasting notifications.
    /// - Parameters:
    ///   - name: The name of the notification to publish.
    /// - Returns: A publisher that emits events when broadcasting notifications.
    func publisher(for name: Notification.Name) -> NotificationCenter.Publisher {
        publisher(for: name, object: nil)
    }
}

extension NotificationCenter: NotificationPublisherProtocol {}