UsingSwiftUISpin.swift

Button(action: {
    self.uiSpin.emit(Event.startCounter)
}) {
    Text("\(self.uiSpin.state.isCounterPaused ? "Start": "Stop")")
}

// A SwiftUISpin can also be used to produce SwiftUI bindings:
Toggle(isOn: self.uiSpin.binding(for: \.isPaused, event: .toggle) {
    Text("toggle")
}
       
// \.isPaused is a keypath which designates a sub state of the state,
// and .toggle is the event to emit when the Toggle is changed.