From 5dbd815047af61bae5209ae157555e864cd80b82 Mon Sep 17 00:00:00 2001
From: Chidozie Ononiwu <chononiw@microsoft.com>
Date: Thu, 18 Jun 2026 18:22:44 -0700
Subject: [PATCH 1/2] Use authenticated npmrc

---
 eng/test-steps.yml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/eng/test-steps.yml b/eng/test-steps.yml
index eba27ca6..78804365 100644
--- a/eng/test-steps.yml
+++ b/eng/test-steps.yml
@@ -7,8 +7,13 @@ steps:
   - task: UseDotNet@2
     inputs:
       version: 6.x
+  - template: /eng/common/pipelines/templates/steps/create-authenticated-npmrc.yml
+    parameters:
+      npmrcPath: $(Agent.TempDirectory)/test/.npmrc
   - script: npm ci
     displayName: npm ci
+    env:
+      npm_config_userconfig: "$(Agent.TempDirectory)/test/.npmrc"
   - script: npm run lint
     displayName: lint
   - script: npm run prettier

From 638d65eda9c6f714085f7fa4c9b2c524f8f1c66a Mon Sep 17 00:00:00 2001
From: Chidozie Ononiwu <chononiw@microsoft.com>
Date: Fri, 19 Jun 2026 11:09:02 -0700
Subject: [PATCH 2/2] Add eng/common directory

---
 .../steps/create-authenticated-npmrc.yml      | 41 +++++++++++++++++++
 eng/test-steps.yml                            |  4 --
 2 files changed, 41 insertions(+), 4 deletions(-)
 create mode 100644 eng/common/pipelines/templates/steps/create-authenticated-npmrc.yml

diff --git a/eng/common/pipelines/templates/steps/create-authenticated-npmrc.yml b/eng/common/pipelines/templates/steps/create-authenticated-npmrc.yml
new file mode 100644
index 00000000..3fa699b3
--- /dev/null
+++ b/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 }}
diff --git a/eng/test-steps.yml b/eng/test-steps.yml
index 78804365..3303d073 100644
--- a/eng/test-steps.yml
+++ b/eng/test-steps.yml
@@ -8,12 +8,8 @@ steps:
     inputs:
       version: 6.x
   - template: /eng/common/pipelines/templates/steps/create-authenticated-npmrc.yml
-    parameters:
-      npmrcPath: $(Agent.TempDirectory)/test/.npmrc
   - script: npm ci
     displayName: npm ci
-    env:
-      npm_config_userconfig: "$(Agent.TempDirectory)/test/.npmrc"
   - script: npm run lint
     displayName: lint
   - script: npm run prettier