Leveraging Build Output API for classic builds

[krystof-k]

I'm really confused about how Build Output API plugs in to the existing magic build setup (for various frameworks).

For example, I'd like to use the image optimization feature. In my case, the project is Vite + a few edge functions + config in vercel.json.

I managed to kind of make it work using the following procedure, but that is definitely not the way to go.

1. Run vercel build
2. Manually edit configuration in .vercel/output/config.json:

   …
     "images": {
       "sizes": [256, 384, 600, 1000],
       "domains": [],
       "minimumCacheTTL": 60,
       "formats": ["image/webp", "image/avif"]
     },
   …

3. Run vercel deploy --prebuilt

Am I missing something? Is there a way to combine the classic build approach and Build Output API?

[krystof-k]

Also posted here, probably a better place, sorry, I'm unable to delete the discussion here.