JasperFx.RuntimeCompiler 5.0.0
JasperFx.RuntimeCompiler
Roslyn-based runtime code-generation backend for the Critter Stack. Compiles in-memory C# at runtime and loads the resulting assembly into the host process — used by Marten, Wolverine, and Polecat for dynamic code paths (LINQ compilation, message handlers, document storage).
Installing this package is opt-in. Apps that pre-generate all code (dotnet run -- codegen write) and run in TypeLoadMode.Static can omit JasperFx.RuntimeCompiler entirely and ship without Roslyn in the production bundle — the foundation for PublishAot=true deployments.
Usage
Register the runtime compiler service in DI to opt in:
services.AddSingleton<IAssemblyGenerator, AssemblyGenerator>();
When GenerationRules.TypeLoadMode is Dynamic or Auto, codegen will route through AssemblyGenerator to compile in-memory.
Documentation
Full docs at https://jasperfx.net.
Repo: github.com/JasperFx/jasperfx.
.NET 10.0
- JasperFx (>= 2.0.0)
- Microsoft.CodeAnalysis (>= 5.0.0)
- Microsoft.CodeAnalysis.CSharp (>= 5.0.0)
- Microsoft.CodeAnalysis.Scripting (>= 5.0.0)
- Microsoft.Extensions.Logging.Abstractions (>= 10.0.0)
.NET 9.0
- JasperFx (>= 2.0.0)
- Microsoft.CodeAnalysis (>= 4.14.0 && < 6.0.0)
- Microsoft.CodeAnalysis.CSharp (>= 4.14.0 && < 6.0.0)
- Microsoft.CodeAnalysis.Scripting (>= 4.14.0 && < 6.0.0)
- Microsoft.Extensions.Logging.Abstractions (>= 9.0.0)
| Version | Downloads | Last updated |
|---|---|---|
| 5.0.0 | 2 | 5/28/2026 |
| 5.0.0-rc.3 | 2 | 5/28/2026 |
| 5.0.0-rc.2 | 2 | 5/28/2026 |
| 5.0.0-rc.1 | 2 | 5/28/2026 |
| 5.0.0-alpha.8 | 2 | 5/20/2026 |
| 5.0.0-alpha.5 | 2 | 5/20/2026 |
| 5.0.0-alpha.4 | 2 | 5/20/2026 |
| 5.0.0-alpha.3 | 2 | 5/20/2026 |
| 5.0.0-alpha.2 | 2 | 5/20/2026 |
| 5.0.0-alpha.1 | 2 | 5/20/2026 |
| 4.5.0 | 3 | 5/4/2026 |
| 4.4.0 | 5 | 2/19/2026 |
| 4.3.2 | 5 | 2/8/2026 |
| 4.3.1 | 6 | 1/28/2026 |
| 4.3.0 | 6 | 12/16/2025 |
| 4.2.1 | 7 | 12/11/2025 |
| 4.2.0 | 7 | 12/13/2025 |
| 4.1.0 | 8 | 11/9/2025 |
| 4.0.0 | 11 | 6/18/2025 |
| 4.0.0-beta-3 | 11 | 6/18/2025 |
| 4.0.0-beta-2 | 10 | 6/18/2025 |
| 4.0.0-beta-1 | 11 | 6/18/2025 |
| 4.0.0-alpha-9 | 11 | 6/18/2025 |
| 4.0.0-alpha-8 | 11 | 6/18/2025 |
| 4.0.0-alpha-7 | 11 | 6/18/2025 |
| 4.0.0-alpha-6 | 11 | 6/18/2025 |
| 4.0.0-alpha-5 | 11 | 6/18/2025 |
| 4.0.0-alpha-4 | 11 | 6/18/2025 |
| 4.0.0-alpha-3 | 11 | 6/18/2025 |
| 4.0.0-alpha-2 | 11 | 6/18/2025 |
| 4.0.0-alpha-18 | 11 | 6/18/2025 |
| 4.0.0-alpha-17 | 11 | 6/18/2025 |
| 4.0.0-alpha-16 | 11 | 6/18/2025 |
| 4.0.0-alpha-15 | 11 | 6/18/2025 |
| 4.0.0-alpha-14 | 12 | 6/18/2025 |
| 4.0.0-alpha-13 | 11 | 6/18/2025 |
| 4.0.0-alpha-12 | 11 | 6/18/2025 |
| 4.0.0-alpha-11 | 11 | 6/18/2025 |
| 4.0.0-alpha-10 | 11 | 6/18/2025 |
| 4.0.0-alpha-1 | 11 | 6/18/2025 |
| 3.7.2 | 11 | 6/18/2025 |
| 3.7.1 | 10 | 6/18/2025 |
| 3.7.0 | 11 | 6/18/2025 |
| 3.6.0 | 11 | 6/18/2025 |
| 3.5.4 | 11 | 6/18/2025 |
| 3.5.3 | 11 | 6/18/2025 |
| 3.5.2 | 11 | 6/18/2025 |
| 3.5.1 | 11 | 6/18/2025 |
| 3.5.0 | 12 | 6/15/2025 |
| 3.4.1 | 11 | 6/18/2025 |
| 3.4.0 | 11 | 6/18/2025 |
| 3.2.0 | 11 | 6/18/2025 |
| 3.1.1 | 11 | 6/18/2025 |
| 3.1.0 | 11 | 6/18/2025 |
| 3.0.2 | 11 | 6/18/2025 |
| 3.0.1 | 11 | 6/18/2025 |
| 3.0.0 | 11 | 6/18/2025 |
| 2.3.1 | 11 | 6/18/2025 |
| 2.3.0 | 11 | 6/18/2025 |
| 2.2.1 | 11 | 6/18/2025 |
| 2.2.0 | 11 | 6/18/2025 |
| 2.1.2 | 11 | 6/18/2025 |
| 2.1.1 | 11 | 6/18/2025 |
| 2.1.0 | 10 | 6/18/2025 |
| 2.0.0 | 11 | 6/18/2025 |
| 2.0.0-alpha.2 | 2 | 5/20/2026 |
| 2.0.0-alpha.1 | 2 | 5/11/2026 |
| 1.1.1 | 11 | 6/18/2025 |
| 1.1.0 | 12 | 6/18/2025 |
| 1.0.1 | 10 | 6/18/2025 |
| 1.0.0 | 11 | 6/18/2025 |
| 0.9.5 | 11 | 6/18/2025 |
| 0.9.4 | 11 | 6/18/2025 |
| 0.9.3 | 11 | 6/18/2025 |
| 0.9.2 | 11 | 6/18/2025 |
| 0.9.1 | 11 | 6/18/2025 |
| 0.9.0 | 11 | 6/18/2025 |