Add gitignore note for next-env.d.ts

[icyJoseph]

---

Slack Thread

 

[cursor]

Cursor Agent can help with this pull request. Just @cursor in comments and I'll start working on changes in this branch.
_{Learn more about Cursor Agents}

[eps1lon]

.env* files should also not be tracked

[hernan-yadiel]

Hey, I just came across this PR because I was wondering if this file should be tracked by version control. I ultimately decided to track it because I saw this 4 years old comment in a GH issue by one Next.js core team member: #26533 (comment)

Can you please explain me why it shouldn't be tracked? Its content almost never changes, so it seems reasonable, for me, to track it.

[icyJoseph]

@hernan-yadiel - #39051

It is a recommendation after all, but do consider that, Next.js can publish and update type signatures on that file. For example with the introduction of https://nextjs.org/docs/app/api-reference/config/next-config-js/isolatedDevBuild, or route props helpers, etc.

• https://nextjs.org/docs/13/app/building-your-application/upgrading/from-vite#step-8-update-scripts-in-packagejson
• Move styled-jsx type reference #37964

A file named next-env.d.ts will be created in the root of your project. This file ensures Next.js types are picked up by the TypeScript compiler. You cannot remove it or edit it as it can change at any time. As such this file should not be committed and should be ignored by version control.