Should buildtime dependencies go in devDependencies?

[hahnbeelee]

I saw discussion #14000 that says "it doesn't matter if you put dependencies in dev or not". But then I also came across #4496 that discusses decreasing cold start times. Decreasing cold start times is something really important to me and I just want to know what I should be doing with my dependencies.

For simplicity of my question, should the dependencies I use solely during build time/in next.config.js be moved to devDependencies?

[sirnovikov]

Looks like build-time dependencies should go to devDependencies.

The convention is to list runtime dependencies under dependencies and build-time dependencies under devDependencies.

https://vercel.com/guides/dependencies-from-package-json-missing-after-install