.package(url: "https://github.com/stateman92/AnimationObserver", exact: .init(0, 0, 1))

public struct CustomView {
    @Binding private var playing: Bool
    @State private var progress: Double

    public init(playing: Binding<Bool>) {
        self._playing = playing
        self.progress = playing.wrappedValue ? .zero : 1
    }

    public var body: some View {
        // ...
        .animationObserver(for: progress) {
            playing = true
        } onComplete: {
            playing = false
        }
    }
}