.gitignore is being overwrittern by prisma init

[BenjaminGuzman]

Bug description

When you run npx prisma init everything executes without problems but the .gitignore file is being overwritten with the following content mentioned in Issue #3400

How to reproduce

1. Create an empty npm project
2. Create and add some contents to .gitignore
3. Run npx prisma init
4. Open the .gitignore file and notice it was overwritten

Expected behavior

The expected behavior may be simply not overwrite the .gitignore if it already exists, instead just output some message like: Be sure to exclude node_modules and .env files inside .gitignore.

Prisma information

Nothing. I'm just starting prisma

Environment & setup

• OS: Fedora
• Database: I don't think this is relevant
• Node.js version: v14.17.0

Prisma Version

prisma               : 2.28.0
@prisma/client       : Not found
Current platform     : rhel-openssl-1.1.x
Query Engine         : query-engine 89facabd0366f63911d089156a7a70125bfbcd27 (at node_modules/@prisma/engines/query-engine-rhel-openssl-1.1.x)
Migration Engine     : migration-engine-cli 89facabd0366f63911d089156a7a70125bfbcd27 (at node_modules/@prisma/engines/migration-engine-rhel-openssl-1.1.x)
Introspection Engine : introspection-core 89facabd0366f63911d089156a7a70125bfbcd27 (at node_modules/@prisma/engines/introspection-engine-rhel-openssl-1.1.x)
Format Binary        : prisma-fmt 89facabd0366f63911d089156a7a70125bfbcd27 (at node_modules/@prisma/engines/prisma-fmt-rhel-openssl-1.1.x)
Default Engines Hash : 89facabd0366f63911d089156a7a70125bfbcd27
Studio               : 0.417.0

[ShubhankarKG]

What should be the expected behavior if .gitignore exists? Is it as suggested by OP or something else as well?

[pantharshit00]

@ShubhankarKG If a .gitignore already exists we should not override it and maybe print a warning.

[mustofa-id]

modify/append the content seems much better.

[janpio]

Yes, but the complexity of that is much higher for a edgecase feature. Choosing the simpler way to just skip the file sounds perfectly fine in this case - and is much less to maintain.

[dlandry-siesde]

Came here from adding Prisma to an existing project. The "Prisma Getting Started: Add to an existing project" guide instructs to run npx prisma init. It appended a db connection string to my .env, and replaced my .gitignore file.

[janpio]

There is an open PR at #8509 that should solve the .gitignore problem. That was definitely not intended.

[janpio]

New PR: #8946