public class TaggedWeak<T: AnyObject, Hash: Hashable>: Hashable {
    public static func == (lhs: TaggedWeak<T, Hash>, rhs: TaggedWeak<T, Hash>) -> Bool {
        lhs.hash == rhs.hash
    }

    public func hash(into hasher: inout Hasher) {
        hasher.combine(hash)
    }

    public weak var value: T?
    let hash: Hash

    public init(hash: Hash, _ value: T?) {
        self.value = value
        self.hash = hash
    }
}