commainMain

interface ApplicationToken {
    val accessToken: String
    val refreshToken: String
}

iosMain

lateinit var tokenProvider: ApplicationToken

actual fun httpClient(config: HttpClientConfig<*>.() -> Unit) = HttpClient(Darwin) {
    config(this)
    engine {
        configureRequest {
            setAllowsCellularAccess(true)
        }
    }
    install(Auth) {
        bearer {
            loadTokens {
                BearerTokens(tokenProvider.accessToken, "")
            }
        }
    }
}

tokenProvider