Astro - Assist `organizeImports` with `:BLANK_LINE:` group breaks

[setchy]

Environment information

Details

CLI:
  Version:                      2.4.0
  Color support:                true

Platform:
  CPU Architecture:             aarch64
  OS:                           macos

Environment:
  BIOME_LOG_PATH:                    unset
  BIOME_LOG_PREFIX_NAME:             unset
  BIOME_LOG_LEVEL:                   unset
  BIOME_LOG_KIND:                    unset
  BIOME_CONFIG_PATH:                 unset
  BIOME_THREADS:                     unset
  BIOME_WATCHER_KIND:                unset
  BIOME_WATCHER_POLLING_INTERVAL:    unset
  NO_COLOR:                     unset
  TERM:                         xterm-256color
  JS_RUNTIME_VERSION:           v24.13.0
  JS_RUNTIME_NAME:              node
  NODE_PACKAGE_MANAGER:         npm/11.8.0

Biome Configuration:
  Status:                       Loaded successfully
  Path:                         biome.json
  Formatter enabled:            false
  Linter enabled:               false
  Assist enabled:               true
  VCS enabled:                  true
  HTML full support enabled:    unset

Workspace:
  Open Documents:           

What happened?

When using organizeImports with any :BLANK_LINE: groups, some Astro frontmatter sections are breaking by suggesting to

• remove the opening ---
• add a blank line.

Removing the :BLANK_LINE: groups works. The above issue seems to only happen in some Astro files in our project, not all.

Minimal reproduction repository: https://github.com/setchy/biome-astro-organize-imports

> biome check

src/index.astro:2:1 assist/source/organizeImports  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ The imports and exports are not sorted.
  
    1 │ ---
  > 2 │ import Page from "./page.astro";
      │ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    3 │ ---
    4 │ 
  
  ℹ Safe fix: Organize Imports (Biome)
  
    1 1 │   
      2 │ + 
    2 3 │   import Page from "./page.astro";
    3 4 │   
  

Checked 4 files in 1991µs. No fixes applied.
Found 1 error.
check ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Some errors were emitted while running checks.

Expected result

Organize imports correctly

Code of Conduct

• I agree to follow Biome's Code of Conduct

[setchy]

@ematipico - any ideas on how best to triage this one?

[AdityaBorkar]

+1. I can confirm this in Astro. Biome adds one blank line in the start of frontmatter on every run of "biome check --fix".

[ematipico]

cc @Conaclos can you help?

[Conaclos]

The bug cannot be reproduced within our test infrastructure (snapshot).