Timer.swift

struct ContentView: View {
    private let formatter = {
      let formatter = DateFormatter()
      formatter.dateStyle = .none
      formatter.timeStyle = .medium
      return formatter
    }()
  
    private let timerSequence = Timer.publish(every: 1,
                                              tolerance: 1,
                                              on: .main,
                                              in: .common)
        .autoconnect()
        .values
    
    @State private var text: String = ""
    var body: some View {
        Text(text).task {
            for await value in timerSequence {
                text = formatter.string(from: value)
            }
        }
    }
}