PublishRelay with Property Wrapper

PublishRelay+PropertyWrapper.swift

import Foundation
import RxSwift
import RxCocoa

@propertyWrapper
struct WrappedPublishRelay<Value> {
    private let value: AnyObserver<Value>
    private let observable: Observable<Value>

    init(_ relay: PublishRelay<Value> = .init()) {
        value = .init {
            guard case let .next(value) = $0 else {
                return
            }
            relay.accept(value)
        }
        observable = relay.asObservable()
    }

    var wrappedValue: AnyObserver<Value> {
        return value
    }

    var projectedValue: Observable<Value> {
        return observable
    }
}