Publish static websites to GitHub Pages (or any Git) cleanly with gh-pages
This is as simple as npm run build && gh-pages -d dist, and there will be no pollution from build remnants. You can safely as /dist/ to .gitignore.
The new branch called gh-pages will be created, with only built elements, no other code.
See the package here
gh-pages
Publish to a gh-pages branch on GitHub (or any other branch on any other remote)