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Saneject

★ 92 Open GitHub ↗

Dependency injection the Unity way

// repository documentation

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Dependency injection the Unity way.

Inject dependencies in the Unity Editor, not Play Mode, by writing them directly into serialized fields at edit-time using familiar DI APIs, so everything stays visible in the Inspector, including interfaces.

No runtime container. No startup cost. No hidden wiring. No weird lifecycles. Just simple, deterministic edit-time DI that works with Unity, not around it.

## Mental model

1. Mark your fields, properties and methods with `[Inject]`.
2. Create a `Scope` that binds dependencies for `[Inject]` members, and add it to a scene or prefab.
3. Click **Inject** in the Unity Editor.
4. Dependencies are injected into serialized fields.
5. Start the game and enjoy fast startup with Unity’s normal lifecycle.

## Slide overview

A quick visual tour of how Saneject works, how editor-time DI differs from runtime DI, its core features, benefits, APIs, and examples.

[Open the full slide overview](https://saneject.dev/slides)

[![Preview of the Saneject slide overview](https://raw.githubusercontent.com/alexanderlarsen/Saneject/main/Docs/images/slides/slides-preview.webp)](https://saneject.dev/slides)

## Main features

| Feature                              | Description                                                                                                                       |
|--------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------|
| Editor-time injection                | Resolve dependencies in the editor and store them as normal serialized references.                                                |
| Inspector-visible wiring             | Keep dependencies, including interfaces, visible and editable in the Inspector instead of hiding them behind a runtime container. |
| Fluent binding API                   | Declare bindings in `Scope` components with familiar DI-style syntax.                                                             |
| Serialized interfaces                | Use `[SerializeInterface]` for interface fields, arrays, and lists without wrapper classes.                                       |
| Scene, prefab, and context awareness | Control what gets injected where and how cross-context resolution behaves.                                                        |
| Runtime proxy bridging               | Handle references Unity cannot serialize directly across scene and prefab boundaries.                                             |
| Low runtime overhead                 | No runtime container, no reflection-based startup pass, and no extra lifecycle layer.                                             |
| Built-in tooling                     | Use injection menus, batch injection, logging, validation, settings, analyzers, and more directly in the Unity Editor.            |

For more features, see [Feature overview](https://saneject.dev/docs/getting-started/feature-overview).

## Try Saneject now

Add this URL to Unity Package Manager (Unity 2022.3.12 or newer):

```text
https://github.com/alexanderlarsen/Saneject.git?path=UnityProject/Saneject/Assets/Plugins/Saneject
```

Or download the [latest release](https://github.com/alexanderlarsen/Saneject/releases) and import it folder into your Unity project.

Then jump to [Quick start](https://saneject.dev/docs/getting-started/quick-start).

## Feedback appreciated

If you try Saneject and something works well, feels unclear, or seems broken, I would love to hear about it.

- If you find a bug, please open an [Issue](https://github.com/alexanderlarsen/Saneject/issues).
- If you want to share feedback, ideas, or first impressions, drop a note in [Discussions](https://github.com/alexanderlarsen/Saneject/discussions).

## Links

- [Docs](https://saneject.dev/docs/getting-started/introduction)
- [API](https://saneject.dev/api/Plugins.Saneject.Editor.Inspectors.SanejectInspector)
- [Releases](https://github.com/alexanderlarsen/Saneject/releases)
- [Changelog](https://github.com/alexanderlarsen/Saneject/blob/main/CHANGELOG.md)
- [MIT license](https://github.com/alexanderlarsen/Saneject/blob/main/LICENSE)

Saneject

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