PublisherToAsync.swift

func fetchData(url: URL) async throws -> Data {
    let cancellables = NSMutableSet()
    return try await withTaskCancellationHandler {
        try await withCheckedThrowingContinuation { continuation in
            let cancellable = APIClient()
                .request(url: url)
                .sink { completion in
                    switch completion {
                    case .failure(let error):
                        continuation.resume(throwing: error)
                    case .finished:
                        break
                    }
                } receiveValue: { data, response in
                    continuation.resume(returning: data)
                }
            cancellables.add(cancellable)
        }
    } onCancel: {
        cancellables.removeAllObjects()
    }
}