This convert your Combine base code to Async/Await

PublisherToAsync.swift

import Fopundation
import Combine

extension AnyPublisher {
  func async<NewOutput>(_ transform: @escaping (Output) throws -> NewOutput) async throws -> NewOutput {
    try await withCheckedThrowingContinuation { continuation in
      var cancellable: AnyCancellable?
      cancellable = first()
        .sink { result in
          switch result {
          case .finished:
            break
          case let .failure(error):
            continuation.resume(throwing: error)
          }
          cancellable?.cancel()
        } receiveValue: { value in
          do {
            let output = try transform(value)
            continuation.resume(with: .success(output))
          } catch {
            continuation.resume(throwing: error)
          }
        }
    }
  }
}