Use default npmrc userprofile (#11045)

This pull request standardizes the creation and authentication of
`.npmrc` files across multiple pipelines by introducing a new reusable
template in
`eng/common/pipelines/templates/steps/create-authenticated-npmrc.yml`.
It replaces older, package-specific implementations and updates various
pipeline YAML files to use this new template, ensuring consistency and
maintainability in how authenticated npm registry access is handled.

**Centralization and Standardization of npm Authentication:**

* Added a new, parameterized template `create-authenticated-npmrc.yml`
in `eng/common/pipelines/templates/steps/` to create and authenticate
`.npmrc` files for npm registry access. This template supports
customizable parameters and sets up authentication using the
`npmAuthenticate@0` task.
* Updated multiple pipeline files (including `ci.yml`, `build-step.yml`,
`test-step.yml`, `install.yml`, and others) to use the new common
template for npm authentication, replacing direct script steps and
previous template usages.
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**Cleanup and Removal of Redundant Code:**

* Removed the old `create-authenticated-npmrc.yml` template from
`eng/emitters/pipelines/templates/steps/`, which previously handled
`.npmrc` creation and authentication in a less flexible manner.
* Updated emitter pipeline stages to reference the new centralized
template instead of the deleted emitter-specific version.

These changes improve maintainability by reducing duplication, making it
easier to update npm authentication logic in one place, and ensuring all
pipelines use the same approach for authenticated npm registry access.

Author: chidozieononiwu

eng/common/pipelines/ci.yml

@@ -29,7 +29,12 @@ extends:
                 displayName: Install Node.js
                 inputs:
                   versionSpec: 22.x
-              - script: npm install -g pnpm # Pnpm manage-package-manager-versions will respect packageManager field
+
+              - template: /eng/common/pipelines/templates/steps/create-authenticated-npmrc.yml
+
+              - pwsh: |
+                  $packageJson = Get-Content -Raw "$(Build.SourcesDirectory)/package.json" | ConvertFrom-Json
+                  npm install -g $packageJson.packageManager # Pnpm manage-package-manager-versions will respect packageManager field
                 displayName: Install pnpm
 
               - script: pnpm install

eng/common/pipelines/templates/steps/create-authenticated-npmrc.yml

@@ -0,0 +1,41 @@
+parameters:
+  - name: npmrcPath
+    type: string
+    # When empty, defaults to the agent user's .npmrc ($HOME/.npmrc on
+    # Linux/macOS, %USERPROFILE%\.npmrc on Windows) so every subsequent
+    # npm / pnpm / npx call in the job inherits the registry + auth.
+    default: ""
+  - name: registryUrl
+    type: string
+    default: "https://pkgs.dev.azure.com/azure-sdk/public/_packaging/azure-sdk-for-js/npm/registry/"
+  - name: CustomCondition
+    type: string
+    default: succeeded()
+  - name: ServiceConnection
+    type: string
+    default: ""
+
+steps:
+  - pwsh: |
+      $npmrcPath = '${{ parameters.npmrcPath }}'
+      if (-not $npmrcPath) { $npmrcPath = Join-Path $HOME '.npmrc' }
+
+      Write-Host "Creating .npmrc file $npmrcPath for registry ${{ parameters.registryUrl }}"
+      $parentFolder = Split-Path -Path $npmrcPath -Parent
+
+      if ($parentFolder -and -not (Test-Path $parentFolder)) {
+        Write-Host "Creating folder $parentFolder"
+        New-Item -Path $parentFolder -ItemType Directory | Out-Null
+      }
+
+      "registry=${{ parameters.registryUrl }}" | Out-File $npmrcPath
+      Write-Host "##vso[task.setvariable variable=resolvedNpmrcPath]$npmrcPath"
+    displayName: "Create .npmrc"
+    condition: ${{ parameters.CustomCondition }}
+
+  - task: npmAuthenticate@0
+    displayName: Authenticate .npmrc
+    condition: ${{ parameters.CustomCondition }}
+    inputs:
+      workingFile: $(resolvedNpmrcPath)
+      azureDevOpsServiceConnection: ${{ parameters.ServiceConnection }}

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

@@ -326,10 +326,7 @@ stages:
                 displayName: Download build artifacts
 
               # Always publish to internal feed
-              - template: /eng/emitters/pipelines/templates/steps/create-authenticated-npmrc.yml
-                parameters:
-                  npmrcPath: $(buildArtifactsPath)/packages/.npmrc
-                  registryUrl: https://pkgs.dev.azure.com/azure-sdk/public/_packaging/azure-sdk-for-js/npm/registry/
+              - template: /eng/common/pipelines/templates/steps/create-authenticated-npmrc.yml
 
               # publish to devops feed
               - pwsh: |
@@ -389,6 +386,7 @@ stages:
                     inputs:
                       versionSpec: "22.x"
                       checkLatest: true
+                  - template: /eng/common/pipelines/templates/steps/create-authenticated-npmrc.yml
                   - script: npm ci
                     displayName: Install emitter dependencies for playground bundle
                     workingDirectory: $(Build.SourcesDirectory)/${{ parameters.PackagePath }}

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

@@ -59,6 +59,8 @@ steps:
 
   - checkout: self
 
+  - template: /eng/common/pipelines/templates/steps/create-authenticated-npmrc.yml
+
   - task: NodeTool@0
     displayName: Install Node.js
     retryCountOnTaskFailure: 3

eng/emitters/pipelines/templates/steps/create-authenticated-npmrc.yml

@@ -51,6 +51,8 @@ parameters:
 steps:
   - checkout: self
 
+  - template: /eng/common/pipelines/templates/steps/create-authenticated-npmrc.yml
+
   - download: current
     artifact: ${{ parameters.BuildArtifactName }}
     displayName: Download build artifacts

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

@@ -42,6 +42,8 @@ jobs:
       # - script: npm install -g bun
       #   displayName: Install bun
 
+      - template: /eng/common/pipelines/templates/steps/create-authenticated-npmrc.yml
+
       - script: npm install -g pnpm
         displayName: Install pnpm
 

eng/tsp-core/pipelines/jobs/cli/build-tsp-cli.yml

@@ -24,8 +24,13 @@ steps:
         inputs:
           version: 8.0.x
 
-  - script: npm install -g pnpm # Pnpm manage-package-manager-versions will respect packageManager field
+  - template: /eng/common/pipelines/templates/steps/create-authenticated-npmrc.yml
+
+  - pwsh: |
+      $packageJson = Get-Content -Raw "$(Build.SourcesDirectory)/package.json" | ConvertFrom-Json
+      npm install -g $packageJson.packageManager # Pnpm manage-package-manager-versions will respect packageManager field
     displayName: Install pnpm
+
   - script: pnpm config set store-dir ${{ parameters.pnpmStorePath }}
     displayName: Setup pnpm cache dir
 

eng/tsp-core/pipelines/templates/install.yml

@@ -125,6 +125,9 @@ extends:
               npm_config_cache: $(Agent.TempDirectory)/npm-cache
             steps:
               - checkout: self
+
+              - template: /eng/common/pipelines/templates/steps/create-authenticated-npmrc.yml
+
               - pwsh: |
                   # Determine the TypeSpec PR URL 
                   $repoUrl = '$(Build.Repository.Uri)'.TrimEnd('/')

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

@@ -36,8 +36,10 @@ try {
     if ($GenerationChecks) {
         Set-StrictMode -Version 1
 
+        $packageJson = Get-Content -Raw "..\..\package.json" | ConvertFrom-Json
+
         Write-Host "Installing pnpm" -ForegroundColor Cyan
-        Invoke-LoggedCommand "npm install -g pnpm" -GroupOutput
+        Invoke-LoggedCommand "npm install -g $($packageJson.packageManager)" -GroupOutput
 
         Write-Host "Setting up workspace" -ForegroundColor Cyan
         Invoke-LoggedCommand "pnpm setup:min" $packageRoot/../..