ci: migrate npm release workflow to OSS Exit Gate

.github/workflows/publish.yml

@@ -6,12 +6,15 @@ on:
 
   workflow_dispatch:
 
+permissions:
+  contents: read
+
 jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@a37ce9120846195fa4ece8f58b268e6043cb2f26 # v3
+      - uses: actions/setup-node@3235b876344d2a9aa001b8d1453c930bba69e610 # v3
         with:
           node-version: '22.x'
       - run: npm ci
@@ -20,19 +23,63 @@ jobs:
   publish-npm:
     needs: test
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      id-token: write
     steps:
       # Build
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@a37ce9120846195fa4ece8f58b268e6043cb2f26 # v3
+      - uses: actions/setup-node@3235b876344d2a9aa001b8d1453c930bba69e610 # v3
         with:
           node-version: '22.x'
       - run: npm ci
       - run: npm run build
-      # Publish
-      - uses: actions/setup-node@v3
+      # Publish via OSS Exit Gate
+      - name: Authenticate to Google Cloud for OSS Exit Gate
+        id: auth
+        uses: google-github-actions/auth@7c6bc770dae815cd3e89ee6cdf493a5fab2cc093 # v3
         with:
-          node-version: '22.x'
-          registry-url: 'https://wombat-dressing-room.appspot.com/'
-      - run: npm publish
+          token_format: 'access_token'
+          workload_identity_provider: 'projects/305452601764/locations/global/workloadIdentityPools/builders/providers/github'
+
+      - name: Set up Cloud SDK
+        uses: google-github-actions/setup-gcloud@aa5489c8933f4cc7a4f7d45035b3b1440c9c10db # v3
+
+      - name: Clean up stale releases from staging repo
+        run: |
+          # clean up stale releases from staging repo
+          packages=$(gcloud artifacts packages list \
+              --project="oss-exit-gate-prod" \
+              --location="us" \
+              --repository="aside--npm" \
+              --format="value(name)" 2>/dev/null)
+
+          echo "${packages}" | xargs -r -I {} sh -c '
+              package_name=$(basename "{}")
+              echo "Deleting package: $package_name..."
+              gcloud artifacts packages delete "{}" \
+                  --project="oss-exit-gate-prod" \
+                  --location="us" \
+                  --repository="aside--npm" \
+                  --quiet
+          '
+
+      - name: Stage to Artifact Registry and trigger OSS Exit Gate
         env:
-          NODE_AUTH_TOKEN: ${{secrets.npm_token}}
+          ACCESS_TOKEN: ${{ steps.auth.outputs.access_token }}
+          RUN_ID: ${{ github.run_id }}
+          RUN_ATTEMPT: ${{ github.run_attempt }}
+        run: |
+          cat << 'NPMRC' > "$HOME/.npmrc"
+          registry=https://us-npm.pkg.dev/oss-exit-gate-prod/aside--npm/
+          //us-npm.pkg.dev/oss-exit-gate-prod/aside--npm/:always-auth=true
+          //us-npm.pkg.dev/oss-exit-gate-prod/aside--npm/:_authToken=${ACCESS_TOKEN}
+          NPMRC
+          trap 'rm -f "$HOME/.npmrc"' EXIT
+          npm publish --access public --registry="https://us-npm.pkg.dev/oss-exit-gate-prod/aside--npm/"
+          cat << 'MANIFEST' > manifest.json
+          {
+            "publish_all": true
+          }
+          MANIFEST
+          gcloud storage cp manifest.json "gs://oss-exit-gate-prod-projects-bucket/aside/npm/manifests/manifest-${RUN_ID}-${RUN_ATTEMPT}.json"