Can't generate import maps

[AkioSarkiz]

Describe the Bug

You can't generate import maps if there is no importMap.js file

Link to the code that reproduces this issue

https://github.com/AkioSarkiz/payload-cms-import-map-bug-reproduction

Reproduction Steps

Here is steps

git clone https://github.com/AkioSarkiz/payload-cms-import-map-bug-reproduction
cd payload-cms-import-map-bug-reproduction
pnpm install
pnpm generate:importmap

You can manually create absolutely empty file and then you can run pnpm generate:importmap and it will work out. The problem is that storing generated code in the repository is not the best idea. It's better to generate importMap on the deployment stage, but you cannot do that right now

Which area(s) are affected? (Select all that apply)

area: core

Environment Info

Binaries:
  Node: 22.14.0
  npm: 11.1.0
  Yarn: N/A
  pnpm: 10.11.0
Relevant Packages:
  payload: 3.40.0
  next: 15.3.0
  @payloadcms/email-nodemailer: 3.40.0
  @payloadcms/graphql: 3.40.0
  @payloadcms/next/utilities: 3.40.0
  @payloadcms/payload-cloud: 3.40.0
  @payloadcms/richtext-lexical: 3.40.0
  @payloadcms/translations: 3.40.0
  @payloadcms/ui/shared: 3.40.0
  react: 19.1.0
  react-dom: 19.1.0
Operating System:
  Platform: darwin
  Arch: arm64
  Version: Darwin Kernel Version 24.4.0: Fri Apr 11 18:33:47 PDT 2025; root:xnu-11417.101.15~117/RELEASE_ARM64_T6000
  Available memory (MB): 16384
  Available CPU cores: 10

[github-actions]

🚀 This is included in version v3.42.0

[github-actions]

This issue has been automatically locked.
Please open a new issue if this issue persists with any additional detail.