Try this. The nil assignment is needed in order to capture the cancellable

extension Publisher {

func asyncResult() async throws -> Output {

try await withCheckedThrowingContinuation { continuation in

var cancellable: AnyCancellable?

cancellable = self.sink(

receiveCompletion: {

switch $0 {

case .failure(let error):

continuation.resume(throwing: error)

case .finished:

cancellable = nil

}

}, receiveValue: {

continuation.resume(returning: $0)

}

)

}

}

}