fix(organizeImports): merge bare exports

[Conaclos]

Summary

Fix #7583. Follow-up of #9353. organizeImports now merges bare exports:
Here is an example of bare export merging:

- export { a };
- export { b };
+ export { a, b };

Bare export are now sorted with other exports.
Bare exports are placed after export from. This is why I manually re-implemented Ord for ImportKey.
Here is an example:

- export { A };
  export * as path from "node:path";
+ export { A };

I chose this order because:

• bare export are often placed at the end
• export from statements are between import and export.
  Imports are usually placed first, then bare exports should be placed last (export from are in-between).
• import with attributes are placed above import without attributes.
  Thus, placing exports with a from clause above exports without it follows the same logic.

Finally, this PR solves another issue reported some weeks or months ago about a missing blank line between imports and a bare export. Unfortunately, I didn't find the issue or discussion that brought it up.
Here is an example of the fix:

  import { A } from "package";
+
  export { A };

Test Plan

I added several tests.

Docs

I edited the changeset of #9353 to cover this PR.

[Conaclos]

This was a useless code. Strangely, this was not reported by Clippy.

[coderabbitai]

Walkthrough

This change makes organizeImports sort and merge adjacent bare export specifier lists and insert a blank line between an import chunk and an export chunk. It refactors merge logic to combine JsExportNamedClause and JsExportNamedFromClause, preserves leading trivia on merged items, and introduces a public merge_export_specifiers function (duplicated). ImportKey/ImportInfo source fields were changed to Option<...> and Ord/PartialOrd were implemented for ImportKey. New tests and a custom options file exercise the behaviour.

Possibly related PRs

• fix(organizeImports): sort specifiers in bare exports #9353 — Adds/adjusts merging and sorting of named specifiers in bare exports; strong code-level overlap.
• docs(organizeImports): add a note for full import merging #8811 — Touches organizeImports merge behaviour and examples for import/export merging; related to merge/trivia semantics.
• feat(lint): add ignoreTypes option to the noImportCycles rule #7017 — Converts import source fields to Option and updates matching/ordering logic; directly related to the ImportKey/ImportInfo changes.

Suggested reviewers

• ematipico
• dyc3

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'fix(organizeImports): merge bare exports' directly summarizes the main change: implementing bare export merging in the organizeImports feature.
Description check	✅ Passed	The description explains the motivation (fixing #7583), the key changes (merging bare exports, reordering exports and imports), includes concrete examples, and documents the test additions.
Linked Issues check	✅ Passed	The PR fully addresses issue #7583 by implementing bare export merging with proper sorting, establishing a deterministic order (exports without 'from' after exports with 'from'), and adding the blank-line spacing fix.
Out of Scope Changes check	✅ Passed	All changes are scoped to organizeImports functionality: enhanced merge logic for bare/named exports, updated import/export key ordering, new test cases, and configuration files—all directly aligned with fixing bare export handling.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch conaclos/organizeImports-fix-7583

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In @.changeset/neat-papers-think.md:
- Around line 5-7: Update the changeset opener to the required bug-fix format by
replacing the current first sentence "Fixed
[`#7583`](https://github.com/biomejs/biome/issues/7583)." with "Fixed
[`#7583`](https://github.com/biomejs/biome/issues/7583): sorts named specifiers
inside bare exports and merges bare exports" (or similar concise description),
so the issue link is followed by a colon and the description; ensure the rest of
the blurb mentioning `organizeImports` remains unchanged.

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ℹ️ Review info

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📥 Commits

Reviewing files that changed from the base of the PR and between 270c6a7 and 27e2436.

📒 Files selected for processing (2)

• .changeset/neat-papers-think.md
• crates/biome_lsp/src/server.tests.rs

[codspeed-hq]

Merging this PR will not alter performance

✅ 58 untouched benchmarks
⏩ 156 skipped benchmarks¹

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_{Comparing conaclos/organizeImports-fix-7583 (c37ae5f) with main (78e74a2)²}

Footnotes

1. 156 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

2. No successful run was found on main (29cac17) during the generation of this report, so 78e74a2 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩