We are rewriting our entire frontend from Webpack + Gatsby to Vite + React, we converted all static pages in one day using Claude Code.
We basically have ~40 components and 6 pages to go until complete rewrite, I am sure we will run into bumps in the road, but it's been crazy to watch.
We also added i18n (English + Spanish), ThemeProvider for white labeling solution, and WCAG 2A compliance, all in one shot.
If I went to a third party and asked them to rewrite just the static pages it would have been $200k and 3 months of work.
I think this is the happiest path for any coding agent. React + vite is in their blood quite literally.