A word of caution when upgrading to the new Astro version 7. A leftover setting in my package.json file didn’t affect my local environment, but it caused a mysterious and unrelated error when I tried deploying the repo to Netlify.
Netlify reported this error message…
rollupOptions.input should not be an html file when building for SSR. Please specify a dedicated SSR entry.
…and they suggested changing a setting that didn’t exist in my astro.config.js file. I appreciated the detailed advice, but it was for SSR apps with a single JavaScript entry point, not fully static Astro sites.
I was initially flumoxxed and I had trouble finding advice for this particular problem. When I ran it by Claude it noticed I had overridden the version of Vite in package.json:
"overrides": {
"vite": "^7.0.0"
}I no longer remember why I pinned version 7 of Vite, probably to address some incompatibility. Now that Astro 7 is using a newer version of Vite (“I should have had a Vite 8!”) I removed that override and ran npm install to test it locally. When I pushed my commit with the new version of package.json the Netlify deployment went smoothly.