Publish npm package from GitHub Actions

.github/workflows/release.yml

@@ -278,14 +278,43 @@ jobs:
 
           gh release create "${{ needs.plan.outputs.tag }}" --target "$RELEASE_COMMIT" $PRERELEASE_FLAG --title "$ANNOUNCEMENT_TITLE" --notes-file "$RUNNER_TEMP/notes.txt" artifacts/*
 
+  publish-npm:
+    needs:
+      - plan
+      - host
+    runs-on: "ubuntu-22.04"
+    env:
+      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      PLAN: ${{ needs.plan.outputs.val }}
+    if: ${{ !fromJson(needs.plan.outputs.val).announcement_is_prerelease || fromJson(needs.plan.outputs.val).publish_prereleases }}
+    steps:
+      - name: Fetch npm packages
+        uses: actions/download-artifact@v7
+        with:
+          pattern: artifacts-*
+          path: npm/
+          merge-multiple: true
+      - uses: actions/setup-node@v6
+        with:
+          node-version: '20.x'
+          registry-url: 'https://registry.npmjs.org'
+      - run: |
+          for release in $(echo "$PLAN" | jq --compact-output '.releases[] | select([.artifacts[] | endswith("-npm-package.tar.gz")] | any)'); do
+            pkg=$(echo "$release" | jq '.artifacts[] | select(endswith("-npm-package.tar.gz"))' --raw-output)
+            npm publish --access public "./npm/${pkg}"
+          done
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+
   announce:
     needs:
       - plan
       - host
+      - publish-npm
     # use "always() && ..." to allow us to wait for all publish jobs while
     # still allowing individual publish jobs to skip themselves (for prereleases).
     # "host" however must run to completion, no skipping allowed!
-    if: ${{ always() && needs.host.result == 'success' }}
+    if: ${{ always() && needs.host.result == 'success' && (needs.publish-npm.result == 'skipped' || needs.publish-npm.result == 'success') }}
     runs-on: "ubuntu-22.04"
     env:
       GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}