add build flow

Author: aggre

.github/workflows/publish.yml

@@ -24,6 +24,8 @@ jobs:
           node-version: ${{ matrix.node-version }}
       - name: install deps
         run: npm ci
+      - name: build
+        run: npm run build
       - uses: JS-DevTools/npm-publish@v3
         with:
           token: ${{ secrets.NPM_TOKEN }}