SystemTextJsonMergePatch 1.0.1

.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher. 
dotnet add package SystemTextJsonMergePatch --version 1.0.1
                    


                    

                
NuGet\Install-Package SystemTextJsonMergePatch -Version 1.0.1
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="SystemTextJsonMergePatch" Version="1.0.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="SystemTextJsonMergePatch" Version="1.0.1" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="SystemTextJsonMergePatch" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add SystemTextJsonMergePatch --version 1.0.1
                    


                    

                
#r "nuget: SystemTextJsonMergePatch, 1.0.1"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package SystemTextJsonMergePatch@1.0.1
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=SystemTextJsonMergePatch&version=1.0.1
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=SystemTextJsonMergePatch&version=1.0.1
                    


                            Install as a Cake Tool

SystemTextJsonMergePatch

RFC 7396 JSON Merge Patch implementation for ASP.NET Core using pure System.Text.Json.

Drop-in replacement for Morcatko.AspNetCore.JsonMergePatch.

Features

  • Pure System.Text.Json — zero Newtonsoft.Json dependency
  • Full RFC 7396 compliance
  • ASP.NET Core input formatter for application/merge-patch+json
  • Nested object and array support
  • PatchBuilder<T> with 4 Build overloads
  • DiffBuilder for object diff comparison
  • ApplyTo and ApplyToT for cross-type patching

Quick Start

// Register in Program.cs
builder.Services.AddMvcCore().AddJsonMergePatch();

// Build a patch from JSON
var patch = PatchBuilder<MyDto>.Build(jsonElement);

// Apply to target
var dto = new MyDto();
patch.ApplyTo(dto);

// Check which fields were provided
var fields = patch.Operations.Select(op => op.path.TrimStart('/'));

Migration from Morcatko

  1. Replace NuGet: Morcatko.AspNetCore.JsonMergePatch.SystemText → SystemTextJsonMergePatch
  2. Replace usings: using Morcatko.AspNetCore.JsonMergePatch; → using SystemTextJsonMergePatch;
  3. Replace registration: .AddSystemTextJsonMergePatch() → .AddJsonMergePatch()
  4. Remove FQN prefixes: Morcatko.AspNetCore.JsonMergePatch.SystemText.Builders.PatchBuilder<T> → PatchBuilder<T>

Acknowledgments

This is a clean-room reimplementation inspired by Morcatko.AspNetCore.JsonMergePatch (MIT License, Copyright (c) 2018 Ondrej Morsky). No source code was copied; the API design was referenced for compatibility. Some test cases were adapted from the original project.

About

This project was created entirely by Claude Code (Anthropic Claude Opus 4.6), authored by neardreams.

License

MIT

Product Compatible and additional computed target framework versions.
.NET net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 is compatible.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

  • net10.0

    • No dependencies.

  • net8.0

    • No dependencies.

  • net9.0

    • No dependencies.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
1.0.1 60 3/10/2026
1.0.0 60 3/10/2026