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✌️ About

⚙️ A dependency injection toolkit based on Go 1.18+ Generics.

This library implements the Dependency Injection design pattern. It may replace the fantastic uber/dig package. samber/do uses Go 1.18+ generics instead of reflection and therefore offers a type‑safe API.

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See also:

  • samber/lo: A Lodash-style Go library based on Go 1.18+ Generics
  • samber/mo: Monads based on Go 1.18+ Generics (Option, Result, Either...)

Why this name?

I love the short name for such a utility library. This name is the sum of DI and Go and no Go package uses this name.

💡 Features​

samber/do is built with high attention to the developer and contributor experience.

  • 📒 Service registration
    • Register by type
    • Register by name
    • Register multiple services from a package at once
  • 🪃 Service invocation
    • Eager loading
    • Lazy loading
    • Transient loading
    • Tag-based invocation
    • Circular dependency detection
  • 🧙‍♂️ Service aliasing
    • Implicit (provide struct, invoke interface)
    • Explicit (provide struct, bind interface, invoke interface)
  • 🔁 Service lifecycle
    • Health check
    • Graceful unload (shutdown)
    • Dependency-aware parallel shutdown
    • Lifecycle hooks
  • 📦 Scope (a.k.a. module) tree
    • Visibility control
    • Dependency grouping
  • 📤 Container
    • Dependency graph resolution and visualization
    • Default container
    • Container cloning
    • Service override
  • 🧪 Debugging & introspection
    • Explain APIs: scope tree and service dependencies
    • Web UI & HTTP middleware (std, Gin, Fiber, Echo, Chi)
  • 🌈 Lightweight, no dependencies
  • 🔅 No code generation
  • 😷 Type‑safe API