A property wrapper, designed to simplify the process of caching data into the keychain and UserDefaults storage. This wrapper makes it possible to quickly and easily implement caching mechanisms in the applications, without having to write extensive amounts of code. The property wrapper takes care of all the underlying complexity, allowing developers to focus on their application's functionality.

You can check GoodPersistence package documentation here

Create a Package.swift file and add the package dependency into the dependencies list. Or to integrate without package.swift add it through the Xcode add package interface.

import PackageDescription

let package = Package(
    name: "SampleProject",
    dependencies: [
        .Package(url: "https://github.com/GoodRequest/GoodPersistence" from: "addVersion")
    ]
)

Storing to the UserDeaults

@UserDefaultValue(String(describing: AppState.self), defaultValue: .initial)
var appState: AppState

Storing to the KeyChain

@KeychainValue("accessToken", defaultValue: "", accessibility: .afterFirstUnlockThisDeviceOnly)
var accessToken: String

Using Publishers

lazy var appStatePublisher = _appState.publisher
    .dropFirst()
    .removeDuplicates()
    .eraseToAnyPublisher()

GoodPersistence is released under the MIT license. See LICENSE for details.