Edit

Using react-native-windows NuGet packages

This documentation and the underlying platform code is a work in progress.

The default for react-native-windows has been to build all code from source. This includes building all the code shipped by the react-native-windows team in the npm package from source. This code can be quite large and take a long time to build as well as require a high-performance computer. Some configurations have problems building this code with only 8 GB of memory. Especially if you are used to working only with managed code, this can be a big surprise.

Starting with version 0.64 the team offers experimental NuGet packages that can be used as a replacement of compiling the sources.

Disclaimer: There are known compatibility issues with community modules, as they still rely on building the shared code from source. So the solution still needs to have all the source projects which puts all the build performance problems back.

Disclaimer: NuGet packages are not compatible with experimental feature WinUI 3.

The benefit of using NuGet packages is that you get improved compilation times for your Windows project and can develop on a less powerful computer.

The other benefit will be that it will be easier to update your projects to future versions or react-native-windows.

How to enable on new projects

When you enable react-native-windows on your new project, you can pass --experimentalNuGetDependency true:

1. npx react-native init <projectName>
2. pushd <projectName>
3. npx react-native-windows-init --overwrite --experimentalNuGetDependency true

Of course all the other flags still work.

How to update a previously created project

C# projects

1. Update the solution file windows\<projectName>.sln:

   1. Open the project in Visual Studio
   2. Remove all projects except your own app project

2. Edit the project file windows\<projectName>\<projectName.csproj>

   1. Add the the NuGet flag to the first property group

      +   <UseExperimentalNuGet>true</UseExperimentalNuGet>
        </PropertyGroup>
      

   2. Remove any <ProjectReference> references for Microsoft.ReactNative.* projects.
   3. Add a NuGet reference to Microsoft.ReactNative.Managed. You can do this either through Visual Studio's UI or by adding:

      <ItemGroup>
        <PackageReference Include="Microsoft.ReactNative.Managed">
          <Version>0.64.0</Version>
        </PackageReference>
      </ItemGroup>
      

      Note: You'll need to match the NuGet version with the npm version

3. Update the C# logic for the new compile-time C# codeGen

C++ projects

1. Update the solution file windows\<projectName>.sln:
   1. Open the project in Visual Studio
   2. Remove all projects that are not your project
2. Edit the project file windows\<projectName>\<projectName.vcxproj>

   1. Add the the NuGet flag to the first property group

        <PropertyGroup Label="ReactNativeWindowsProps">
          <ReactNativeWindowsDir Condition="'$(ReactNativeWindowsDir)' == ''">...</ReactNativeWindowsDir>
      +   <UseExperimentalNuGet>true</UseExperimentalNuGet>
        </PropertyGroup>
      

   2. Remove any <ProjectReference> references for Microsoft.ReactNative.* projects.

   3. Add NuGet references to the following NuGet packages:

      • Microsoft.ReactNative
      • Microsoft.ReactNative.Cxx

      C++ packages do not support PackageReference so it is not recommended to manually add these dependencies to the project file, instead add the dependencies via the Visual Studio IDE.

      Note: You'll need to match the NuGet version with the npm version

Version match

The versions of the NuGet package in your project must match the npm package version. If you need to update the NuGet packages there is a separate page on Updating NuGet packages