Lessons learned from handling JWT on mobile

typealias Token = String typealias AuthorizationValue = String struct UserAuthenticationInfo { let bearerToken: Token // the JWT let refreshToken: Token let expiryDate: Date // computed on creation from 'exp' claim var isValid: Bool { return expiryDate.compare(Date()) == .orderedDescending } } protocol TokenRefreshing { func refreshAccessToken(_ refreshToken: Token, completion: @escaping (Result<UserAuthenticationInfo, Error>) -> Void) } protocol AuthenticationInfoStorage { var userAuthenticationInfo: UserAuthenticationInfo?