Imports in next.config.ts is allowed in Next 15+

[JulianKingman]

As I was setting up t3-env in my latest project, I noticed that Next 15 now supports imports in next.config.ts, no jiti required.

source:
vercel/next.js#35969 (comment)

PR for docs update:
#342

[FleetAdmiralJakob]

[juliansommer]

they updated it recently so you can import esm modules in next.config.ts. just must not have updated the docs but it definitely does work.

in my next.config.ts I just do this

import "./src/env"