Update npm-publish.yml

Author: dubesar

.github/workflows/npm-publish.yml

@@ -25,6 +25,7 @@ jobs:
           node-version: 14
           registry-url: https://registry.npmjs.org/
       - run: npm install
+      - run: npm run build
       - run: npm publish --access public
         env:
           NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}