Directory.Build.targets

<?xml version="1.0" encoding="utf-8"?>
<Project>

  <!-- This target is used to compute the inputs and outputs for running the `yarn install`. -->
  <Target
    Name="ReactNativeYarnInstallInputAndOutputs"
    >
    <ItemGroup>
      <_ReactNativeYarnInstallInputFiles Include="$(MSBuildThisFileDirectory)yarn.lock" />
      <_ReactNativeYarnInstallInputFiles Include="$(MSBuildThisFileDirectory)**\package.json" Exclude="$(MSBuildThisFileDirectory)node_modules\**" />
      <_ReactNativeYarnInstallOutputFiles Include="@(_ReactNativeYarnInstallInputFiles->'$(ReactNativeYarnIntDir)%(RecursiveDir)%(Filename)%(Extension).dummy')" />
    </ItemGroup>
  </Target>

  <!--
    This target runs `yarn install` and then `yarn build` as a post install step in `package.json`.
    This is to address build failures by not running `yarn install` after syncing.
    We do not run `yarn install` during design time build and in our CI validation runs (detected via AGENT_NAME).
  -->
  <Target
    Name="ReactNativeYarnInstall"
    BeforeTargets="BeforeBuild"
    DependsOnTargets="ReactNativeYarnInstallInputAndOutputs"
    Inputs="@(_ReactNativeYarnInstallInputFiles)"
    Outputs="@(_ReactNativeYarnInstallOutputFiles)"
    Condition="'$(DesignTimeBuild)'=='' AND '$(AGENT_NAME)' == ''"
    >

    <Message Text="Running yarn install to fetch latest packages." Importance="High" />
    <Message Text="yarn install --frozen-lockfile --mutex file:.yarn-mutex" Importance="High" />
    <Exec
      ContinueOnError="True"
      Command="yarn install --frozen-lockfile --mutex file:.yarn-mutex"
      WorkingDirectory="$(MSBuildThisFileDirectory)"
      >
      <Output TaskParameter="ExitCode" ItemName="_ReactNativeYarnExitCode"/>
    </Exec>

    <Message Text="yarn install: Succeeded" Condition="'%(_ReactNativeYarnExitCode.Identity)' == '0'" Importance="High" />
    <Message Text="yarn install: Failed" Condition="'%(_ReactNativeYarnExitCode.Identity)' != '0'" Importance="High" />

    <!-- Fail the build if yarn needs to update yarn.lock file. -->
    <Error
      Condition="'%(_ReactNativeYarnExitCode.Identity)' != '0'"
      Text="Yarn packages are out of date. Please run `yarn install` in the root of the repo to ensure the generated files are up to date"
    />

    <!--
      Copy the yarn.lock file to prevent this task from running over and over again, and only rerun the check with yarn.lock or any package.json changes.
      This will likely miss a few corner cases with local changes to package.json but should catch the most important case after syncing
    -->
    <MakeDir Directories="$(ReactNativeYarnIntDir)" />
    <Copy
      Condition="'%(_ReactNativeYarnExitCode.Identity)' == '0'"
      SourceFiles="@(_ReactNativeYarnInstallInputFiles)"
      DestinationFiles="@(_ReactNativeYarnInstallOutputFiles)"
      SkipUnchangedFiles="true"
      Retries="5"
      RetryDelayMilliseconds="100" />
    <!-- We have to touch the outputs to ensure up to date incrementaility works-->
    <Touch Files="@(_ReactNativeYarnInstallOutputFiles)" />

  </Target>

  <!-- For build debugging purposes. -->
  <Target Name="Vars">

    <ItemGroup>
      <_VarsGeneral Include="
        ApplicationType;
        Configuration;
        Platform;
        PlatformTarget;
        PlatformName;
        DefaultPlatformToolset;
        PlatformToolset;
        SolutionPath;
        SolutionDir;
        SolutionName;
        IntDir;
        OutDir;
        TargetDir;
        TargetPath;
        TLogLocation;
        LastBuildUnsuccessful;
        LastBuildState;
        GeneratedFilesDir;
        TargetFrameworkMoniker;
        MSBuildExtensionsPath;
        MSBuildExtensionsPath32;
        MSBuildExtensionsPath64;
        VCTargetsPath;
        UserRootDir;
        ProjectHome;
        BaseIntermediateOutputPath;
        IntermediateOutputPath;
        OutputPath;
        OS;
      " />
      <_VarsCustom Include="
        RootDir;
        RootIntDir;
        RootOutDir;
        BaseIntDir;
        BaseOutDir;
        ReactNativeDir;
        ReactNativeWindowsDir;
        FollyDir;
        YogaDir;
        WinVer;
      " />
      <_VarsWinRT Include="
        UnmergedWinmdDirectory;
        MergedWinmdDirectory;
      " />
      <_VarsJSEngine Include="
        PkgReactNative_Hermes_Windows;
        EnableHermesInspectorInReleaseFlavor;
        UseHermes;
        HermesVersion;
        HermesPackage;
        HermesArch;
        UseFabric;
        UseV8;
        V8Package;
        V8Version;
        V8AppPlatform;
      " />
      <_VarsNuGet Include="
        AssetTargetFallback;
        IncludeFrameworkReferencesFromNuGet;
        NuGetPackageRoot;
        NuGetPackagesDirectory;
        NuGetRuntimeIdentifier;
        ProjectLockFile;
        NuGetTargetMoniker;
        TargetFramework;
        TargetFrameworks;
        TargetFrameworkIdentifier;
        BaseNuGetRuntimeIdentifier;
        TargetPlatformIdentifier;
        MSBuildProjectExtensionsPath;
        RestoreProjectStyle;
        RestoreUseStaticGraphEvaluation;
      " />
      <_VarsWinUI Include="
        UseWinUI3;
        WinUI3Version;
        WinUI2xVersion;
        WinUIPackageName;
        WinUIPackageVersion;
        IsWinUIAlpha;
      " />
    </ItemGroup>

    <Message Text="General" />
    <Message Text="=> @(_VarsGeneral->PadRight(24)) [$(%(_VarsGeneral.Identity))]" />

    <Message Text="%0A" />
    <Message Text="Custom" />
    <Message Text="=> @(_VarsCustom->PadRight(24)) [$(%(_VarsCustom.Identity))]" />

    <Message Text="%0A" />
    <Message Text="Microsoft.CppBuild.targets/MakeDirsForCl" />
    <Message Text="=> PrecompiledHeaderOutputFile  [@(CLCompile->Metadata('PrecompiledHeaderOutputFile')->DirectoryName()->Distinct())]" />
    <Message Text="=> AssemblerListingLocation     [@(CLCompile->Metadata('AssemblerListingLocation')->DirectoryName()->Distinct())]" />
    <Message Text="=> ObjectFileName               [@(CLCompile->Metadata('ObjectFileName')->DirectoryName()->Distinct())]" />
    <Message Text="=> ProgramDataBaseFileName      [@(CLCompile->Metadata('ProgramDataBaseFileName')->DirectoryName()->Distinct())]" />
    <Message Text="=> XMLDocumentationFileName     [@(CLCompile->Metadata('XMLDocumentationFileName')->DirectoryName()->Distinct())]" />
    <Message Text="=> BrowseInformationFile        [@(CLCompile->Metadata('BrowseInformationFile')->DirectoryName()->Distinct())]" />
    <Message Text="=> PreprocessOutputPath         [@(CLCompile->Metadata('PreprocessOutputPath')->DirectoryName()->Distinct())]" />
    <Message Text="=> PreprocessorDefinitions      [@(CLCompile->Metadata('PreprocessorDefinitions')->Distinct())]" />
    <Message Text="=> ClDirsToMake                 [@(ClDirsToMake)]" />

    <Message Text="%0A" />
    <Message Text="WinRT" />
    <Message Text="=> @(_VarsWinRT->PadRight(24)) [$(%(_VarsWinRT.Identity))]" />

    <Message Text="%0A" />
    <Message Text="JS Engine" />
    <Message Text="=> @(_VarsJSEngine->PadRight(40)) [$(%(_VarsJSEngine.Identity))]" />

    <Message Text="%0A" />
    <Message Text="NuGet" />
    <Message Text="=> @(_VarsNuGet->PadRight(40)) [$(%(_VarsNuGet.Identity))]" />
    <Message Text="=> PackageReference->Count                  [@(PackageReference->Count())]" />

    <Message Text="%0A" />
    <Message Text="WinUI" />
    <Message Text="=> @(_VarsWinUI->PadRight(40)) [$(%(_VarsWinUI.Identity))]" />

    <Message Text="%0A" />
    <Message Text="Items" />
    <Message Text="=> ProjectCapability" />
    <Message Text="                                            %(ProjectCapability.Identity)" />

  </Target>

</Project>