InfomaniakDI

Minimalist dependency injection mechanism written in pure Swift.

Support any first party Swift platfom. [ iOS / iPadOS / watchOS / macOS / Linux ]

Well tested. Used in production across the Infomaniak iOS Apps.

Property wrapper based with @LazyInjectService and @InjectService.

Optimised to work well with SwiftUI Views.

Features

• ☑ Efficient SwiftUI. @(Lazy)InjectService will not re-resolve, when used as a property, on a View redraw.
• ☑ Good integration test coverage
• ☑ Pure Swift Type Support
• ☑ Thread safety
• ☑ Injection by name
• ☑ Injection with Arguments
• ☑ Lazy init (with @LazyInjectService)

Roadmap

• ☐ Optionals
• ☐ Multiple containers

Requirements

• Swift 5.6 +
• SPM

Setup

Early on in the lifecycle of your app, you want to write something like this :

import InfomaniakDI

[…]

let factory = Factory(type: SomeService.self) { _, _ in
   SomeService()
}

do {
    try SimpleResolver.sharedResolver.store(factory: factory)
}
catch {
    FatalError("unexpected DI error \(error)")
}

later on, when you want to resolve a service use the property wrapper like so:

@InjectService var injected: SomeService

Injection will be performed at the init time of the owner of the property.

Use @LazyInjectService for resolution at first use of the wrapped property. Prefer @LazyInjectService when used as a property.

Documentation

Checkout ITSimpleReslover.swift for more advanced examples.

Licence

This package is available under the permissive ApacheV2 licence for you to enjoy.