Type definitions file getting overwritten on build and dev

[azzazkhan]

What version of Next.js are you using?

11.0.1

What version of Node.js are you using?

14.16.0

What browser are you using?

Chrome version 91.0.4472.114 (Official Build) (64-bit)

What operating system are you using?

Windows 10 Home (64-bit)

How are you deploying your application?

next dev/next build

Describe the Bug

When running next build or next start the configured next-env.d.ts gets overwritten and all configurations are removed. I'm using the next-page-transitions package to add transition effects on navigation but when I import the package typescript yells that no type definitions found for package next-page-transitions.

To solve this I added custom type declarations for the next-page-transitions and .svg files, by doing so my next-env.d.ts files looks like this.

/// <reference types="next" />
/// <reference types="next/types/global" />
/// <reference types="next/image-types/global" />

declare module "next-page-transitions";

declare module "*.svg" {
  content: string;
  export default content;
}

But when I run next build or next dev commands it overwrites my next-env.d.ts file to this

/// <reference types="next" />
/// <reference types="next/types/global" />
/// <reference types="next/image-types/global" />

BTW I'm using the yarn package manager and using the yarn run dev and yarn run build commands. Due to this bug, I have to rewrite the file every time I need to start the server.

Expected Behavior

Should not overwrite the type declaration file.

To Reproduce

Just initialize a new Next.js project with yarn create next-app --typescript and add type declarations for packages in next-env.d.ts file or follow up using this repository

[ijjk]

Closing as a duplicate of #26560

[balazsorban44]

This issue has been automatically locked due to no recent activity. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.