feat: add UseTypeSpecNext support for C# emitter pipeline

eng/emitters/pipelines/templates/jobs/test-job.yml

@@ -52,6 +52,10 @@ parameters:
     type: string
     default: "3.12"
 
+  - name: UseTypeSpecNext
+    type: boolean
+    default: false
+
 jobs:
   - job: Test_${{ parameters.Os }}_${{ split(parameters.NodeVersion, '.')[0] }}
     ${{ if eq(parameters.Os, 'linux') }}:
@@ -83,6 +87,7 @@ jobs:
           CadlRanchName: ${{ parameters.CadlRanchName }}
           EnableCadlRanchReport: ${{ parameters.EnableCadlRanchReport }}
           PythonVersion: ${{ parameters.PythonVersion }}
+          UseTypeSpecNext: ${{ parameters.UseTypeSpecNext }}
     ${{ if parameters.EmitArtifacts }}:
       templateContext:
         outputs:

eng/emitters/pipelines/templates/stages/emitter-stages.yml

@@ -192,6 +192,7 @@ stages:
                   CadlRanchName: ${{ parameters.CadlRanchName }} # only needed for first job
                   EnableCadlRanchReport: ${{ parameters.EnableCadlRanchReport }}
                   PythonVersion: ${{ parameters.PythonVersion }}
+                  UseTypeSpecNext: ${{ parameters.UseTypeSpecNext }}
               - template: /eng/emitters/pipelines/templates/jobs/test-job.yml
                 parameters:
                   AdditionalInitializeSteps: ${{ parameters.AdditionalInitializeSteps }}
@@ -202,6 +203,7 @@ stages:
                   NodeVersion: 22.x
                   Os: linux
                   PythonVersion: ${{ parameters.PythonVersion }}
+                  UseTypeSpecNext: ${{ parameters.UseTypeSpecNext }}
               - template: /eng/emitters/pipelines/templates/jobs/test-job.yml
                 parameters:
                   AdditionalInitializeSteps: ${{ parameters.AdditionalInitializeSteps }}
@@ -212,6 +214,7 @@ stages:
                   NodeVersion: 20.x
                   Os: windows
                   PythonVersion: ${{ parameters.PythonVersion }}
+                  UseTypeSpecNext: ${{ parameters.UseTypeSpecNext }}
               - template: /eng/emitters/pipelines/templates/jobs/test-job.yml
                 parameters:
                   AdditionalInitializeSteps: ${{ parameters.AdditionalInitializeSteps }}
@@ -222,6 +225,7 @@ stages:
                   NodeVersion: 22.x
                   Os: windows
                   PythonVersion: ${{ parameters.PythonVersion }}
+                  UseTypeSpecNext: ${{ parameters.UseTypeSpecNext }}
 
   # Regen Test stage
   # Responsible for running any regen tests needed to validate no manual changes were done.
@@ -246,6 +250,7 @@ stages:
               Os: windows
               TestMatrix: ${{ parameters.TestMatrix }}
               PythonVersion: ${{ parameters.PythonVersion }}
+              UseTypeSpecNext: ${{ parameters.UseTypeSpecNext }}
           - template: /eng/emitters/pipelines/templates/jobs/test-job.yml
             parameters:
               AdditionalInitializeSteps: ${{ parameters.AdditionalInitializeSteps }}
@@ -255,6 +260,7 @@ stages:
               Os: linux
               TestMatrix: ${{ parameters.TestMatrix }}
               PythonVersion: ${{ parameters.PythonVersion }}
+              UseTypeSpecNext: ${{ parameters.UseTypeSpecNext }}
 
   # Publish stage
   # Responsible for publishing the packages in `build_artifacts/packages` and producing `emitter-package-lock.json`

eng/emitters/pipelines/templates/steps/build-step.yml

@@ -72,6 +72,11 @@ steps:
 
   - ${{ parameters.AdditionalInitializeSteps }}
 
+  - ${{ if parameters.UseTypeSpecNext }}:
+      - script: npx -y @azure-tools/typespec-bump-deps@latest --use-peer-ranges package.json
+        displayName: "Update TypeSpec dependencies to @next"
+        workingDirectory: $(selfRepositoryPath)${{ parameters.PackagePath }}
+
   - task: PowerShell@2
     displayName: "Run initialize script"
     inputs:

eng/emitters/pipelines/templates/steps/test-step.yml

@@ -44,6 +44,10 @@ parameters:
     type: string
     default: "3.12"
 
+  - name: UseTypeSpecNext
+    type: boolean
+    default: false
+
 steps:
   - checkout: self
 
@@ -69,7 +73,7 @@ steps:
     inputs:
       pwsh: true
       filePath: $(selfRepositoryPath)${{ parameters.PackagePath }}/eng/scripts/Initialize-Repository.ps1
-      arguments: -BuildArtifactsPath '$(buildArtifactsPath)'
+      arguments: -BuildArtifactsPath '$(buildArtifactsPath)' -UseTypeSpecNext:$${{ parameters.UseTypeSpecNext }}
       workingDirectory: $(selfRepositoryPath)
 
   - task: PowerShell@2

packages/http-client-csharp/eng/pipeline/publish.yml

@@ -29,6 +29,11 @@ parameters:
     type: boolean
     default: true
 
+  - name: UseTypeSpecNext
+    displayName: Use TypeSpec Next (update dependencies to @next versions)
+    type: boolean
+    default: false
+
 extends:
   template: /eng/common/pipelines/templates/1es-redirect.yml
 
@@ -37,7 +42,7 @@ extends:
       - template: /eng/emitters/pipelines/templates/stages/emitter-stages.yml
         parameters:
           BuildPrereleaseVersion: true
-          UseTypeSpecNext: false
+          UseTypeSpecNext: ${{ parameters.UseTypeSpecNext }}
           Publish: ${{replace(replace('True',eq(variables['Build.SourceBranchName'], 'main'), 'public'),'True','internal')}}
           PublishDependsOnTest: ${{ parameters.RunTests }}
           PackagePath: /packages/http-client-csharp
@@ -155,6 +160,13 @@ extends:
                   npm install -g semver
                 displayName: Install semver
 
+              - ${{ if parameters.UseTypeSpecNext }}:
+                  - pwsh: |
+                      Write-Host "##vso[task.setvariable variable=npm_config_force]true"
+                      Write-Host "##vso[task.setvariable variable=TSPCLIENT_FORCE_INSTALL]true"
+                      Write-Host "Set npm --force and TSPCLIENT_FORCE_INSTALL for TypeSpec Next"
+                    displayName: Configure npm for TypeSpec Next
+
               - task: PowerShell@2
                 displayName: Update package.json with injected dependencies
                 inputs:

packages/http-client-csharp/eng/scripts/Initialize-Repository.ps1

@@ -26,16 +26,28 @@ try {
         Copy-Item "$lockFilesPath/emitter/package.json" './package.json' -Force
         Copy-Item "$lockFilesPath/emitter/package-lock.json" './package-lock.json' -Force
 
-        Invoke-LoggedCommand "npm ci"
+        if ($UseTypeSpecNext) {
+            Invoke-LoggedCommand "npm ci --force"
+        }
+        else {
+            Invoke-LoggedCommand "npm ci"
+        }
     }
     elseif ($UseTypeSpecNext) {
-        # TODO: add use typespec next to template later
+        Invoke-LoggedCommand "npm install --force"
     }
     else {
         Invoke-LoggedCommand "npm ci"
     }
 
-    Invoke-LoggedCommand "npm ls -a" -GroupOutput
+    if ($UseTypeSpecNext) {
+        # npm ls may report peer dependency mismatches with @next versions; ignore exit code
+        Invoke-LoggedCommand "npm ls -a" -GroupOutput -IgnoreExitCode
+        $global:LASTEXITCODE = 0
+    }
+    else {
+        Invoke-LoggedCommand "npm ls -a" -GroupOutput
+    }
 
     Write-Host "artifactStagingDirectory: $env:BUILD_ARTIFACTSTAGINGDIRECTORY"
     Write-Host "BuildArtifactsPath: $BuildArtifactsPath"

packages/http-client-csharp/generator/Packages.Data.props

@@ -10,9 +10,9 @@
     <PackageReference Update="CommandLineParser" Version="2.9.1" />
     <PackageReference Update="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.8.0" />
     <PackageReference Update="Microsoft.Build" Version="17.9.5" />
-    <PackageReference Update="NuGet.Configuration" Version="6.14.0" />
-    <PackageReference Update="NuGet.Versioning" Version="6.14.0" />
-    <PackageReference Update="NuGet.Protocol" Version="6.14.0" />
+    <PackageReference Update="NuGet.Configuration" Version="6.14.3" />
+    <PackageReference Update="NuGet.Versioning" Version="6.14.3" />
+    <PackageReference Update="NuGet.Protocol" Version="6.14.3" />
     <PackageReference Update="System.ComponentModel.Composition" Version="8.0.0" />
     <PackageReference Update="System.ClientModel" Version="1.10.0" />
     <PackageReference Update="Microsoft.Extensions.Configuration.Abstractions" Version="10.0.3" />