Swift 5.2 only - this will not work in Swift 5.1

Observable.swift

import Combine
import SwiftUI

@propertyWrapper
class Observable<T>: ObservableObject {
    @Published var wrappedValue: T
    init(wrappedValue: T) {
        self.wrappedValue = wrappedValue
    }
}

struct ContentView: View {
    @ObservedObject @Observable var point: CGPoint = .zero
    var body: some View {
        VStack {
            Text("Hello, World! \(point.x), \(point.y)")
            Button("Tap me!") {
                self.point.x += 2
                self.point.y += 3
            }
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}