DuonDevKit

DuonDevKit is a collection of lightweight .NET libraries (targeting net8.0 and net9.0) for explicit error handling, data access, ASP.NET Core responses, JWT authentication, and validation.

Packages

Package	Description	Documentation
DuonDevKit.Core	Result/Error, Option, guards, mapping, security, DataAnnotations validation, and extensions.	README
DuonDevKit.EntityFrameworkCore	Result-based Repository/UnitOfWork with auditing and soft deletion.	README
DuonDevKit.AspNetCore	Converts Results into MVC and Minimal API responses; automatic request validation.	README
DuonDevKit.Dapper	Executes Dapper SQL through an EF Core context connection and transaction.	README
DuonDevKit.Jwt	JWT access/refresh token support and audit-user integration.	README
DuonDevKit.Validation	FluentValidation integration for the Result pattern.	README
DuonDevKit.Templates	dotnet new templates that scaffold a new project already wired to these packages.	README

Getting started

Requires the .NET 8 SDK, the .NET 9 SDK, or both (building/testing the full solution locally builds both net8.0 and net9.0 targets).

Install only the packages your application needs. Packages that depend on another DuonDevKit package bring that dependency in automatically.

dotnet add package DuonDevKit.Core
dotnet add package DuonDevKit.EntityFrameworkCore
dotnet add package DuonDevKit.AspNetCore
dotnet add package DuonDevKit.Dapper
dotnet add package DuonDevKit.Jwt
dotnet add package DuonDevKit.Validation

Each package README includes its required registration and first-use example.

To start a new project with everything already wired together instead of adding each package by hand, install the project template:

dotnet new install DuonDevKit.Templates
dotnet new duondevkit-api -n MyApi --auth --dapper --validation

See DuonDevKit.Templates for what each flag adds.

dotnet build DuonDevKit.slnx
dotnet test DuonDevKit.slnx

Contributing

Keep builds warning-free and include unit tests for changed behavior.