Swift debounce using DispatchWorkItem

debounce.swift

func debounce(delay: TimeInterval, action: @escaping () -> Void) -> () -> Void {
    var currentWorkItem: DispatchWorkItem?
    
    return {
        currentWorkItem?.cancel()
        currentWorkItem = DispatchWorkItem(block: action)
        DispatchQueue.main.asyncAfter(deadline: .now() + delay, execute: currentWorkItem!)
    }
}