pakrym/jab

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

1256 stars · 46 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Jab is a compile-time dependency injection container for C# implemented as a Roslyn source generator. It generates strongly-typed service provider code during compilation, eliminating runtime reflection and providing fast startup and resolution compared to Microsoft.Extensions.DependencyInjection.

Use cases

• fast dependency injection for .NET applications
• AOT-friendly DI container without runtime code generation
• compile-time validation of service registrations
• dependency injection for Unity games
• reduce DI container startup time in serverless or CLI apps
• replace Microsoft.Extensions.DependencyInjection with faster alternative

When to choose

• you need the fastest possible DI container startup and resolution in .NET
• you target AOT or trimming scenarios where reflection-based DI fails
• you want container configuration errors caught at compile time
• you work in Unity or .NET Standard 2.0 environments
• you want zero runtime dependencies in your library

When to avoid

• you rely on IServiceCollection-based runtime registration syntax
• you need dynamic or runtime-configured service registrations
• your team prefers conventional Microsoft.Extensions.DependencyInjection ecosystem
• you need features beyond transient, singleton, scoped, named, factory, and instance registrations

Facets

library · maturity active

compiler developer-tools performance dotnet cross-platform source-generator roslyn dependency-injection-container compile-time-di aot-friendly microsoft-extensions unity-support nuget-package dependency-injection code-generation dotnet

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