CI/CD - npm publish on master push, dry-run on master pr

Author: cliffhall

.github/workflows/node.js.yml

@@ -28,8 +28,16 @@ jobs:
       - run: xvfb-run --auto-servernum npm run test:chrome
       - run: xvfb-run --auto-servernum npm run test:firefox
 
+      - name: Publish to npm dry-run
+        if: github.ref == 'refs/heads/master' && github.event_name == 'pull_request'
+        env:
+          run: echo "//registry.npmjs.org/:_authToken=${NPM_TOKEN}" > .npmrc
+          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
+        run: npm publish:dry-run
+
       - name: Publish to npm
         if: github.ref == 'refs/heads/master' && github.event_name == 'push'
         env:
-          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+          run: echo "//registry.npmjs.org/:_authToken=${NPM_TOKEN}" > .npmrc
+          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
         run: npm publish