https://stackoverflow.com/a/79235504/1271826

AsyncFirst.swift

extension Sequence {
    func first(where predicate: sending (Self.Element) async throws -> Bool) async rethrows -> Self.Element? {
        for element in self {
            if try await predicate(element) {
                return element
            }
        }
        return nil
    }
}

func getCounter4(number: Int) async -> Counter? {
    await counters.first { counter in
        await counter.number == number
    }
}

Alternatively, see https://gist.github.com/robertmryan/3127092969b144335ae9f5186d7d97fc.