Installation

Then is a Swift library compatible with iOS 12+, macOS 10.13+, tvOS 12+, and watchOS 6+.

The recommended and officially supported way to install Then is using the Swift Package Manager (SPM).

Swift Package Manager (SPM)

SPM is Apple's official dependency manager integrated directly into Xcode. To add Then to your project:

1. In Xcode, open your project and navigate to File > Swift Packages > Add Package Dependency...
2. In the package repository URL field, enter: https://github.com/freshOS/Then
3. Choose the version rules and click Next.
4. Select the Then library to be added to your app's target.
5. Click Finish.

Your Package.swift manifest might look like this:

// swift-tools-version:5.9
import PackageDescription

let package = Package(
    name: "MyApp",
    dependencies: [
        .package(url: "https://github.com/freshOS/Then.git", from: "5.1.3")
    ],
    targets: [
        .target(
            name: "MyApp",
            dependencies: ["Then"])
    ]
)

Deprecated Methods

As of version 5.1.3, Cocoapods and Carthage are deprecated and will not be supported in future versions. It is highly recommended to migrate to Swift Package Manager.

Cocoapods

target 'MyApp'
pod 'thenPromise'
use_frameworks!

Carthage

github "freshOS/then"

Swift Version Compatibility

Then maintains compatibility with various Swift versions. Refer to the table below for the correct library version for your toolchain:

Swift Version	Then Version
Swift 2	1.4.2
Swift 3	2.2.5
Swift 4	3.1.0
Swift 4.1	4.1.1
Swift 4.2	4.2.0
Swift 4.2.1	4.2.1
Swift 5.0	5.0.0
Swift 5.1+	5.1.0+