Debouncer

final class Debouncer {

    private let queue: DispatchQueue
    private let delay: TimeInterval
    private var workItem: DispatchWorkItem?
    
    init(
        delay: TimeInterval,
        queue: DispatchQueue
    ) {
        self.delay = delay
        self.queue = queue
    }

    func debounce(_ block: @escaping () -> Void) {

        workItem?.cancel()
        let newItem = DispatchWorkItem {
            block()
        }
        workItem = newItem
        queue.asyncAfter(deadline: .now() + Double(delay), execute: newItem)
    }
}