fix(codegen): print legal comments above directives

[Boshen]

Summary

Fixes #14953

Legal comments (e.g., /*! ... */) that appear before directives like "use strict" are now properly preserved in the generated code.

🤖 Generated with Claude Code

[graphite-app]

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[Copilot]

Pull Request Overview

This PR fixes the handling of legal comments that appear before directives (like "use strict"), ensuring they are preserved in the generated code rather than being dropped.

Key changes:

• Modified the Directive::gen implementation to print leading comments before outputting the directive itself
• Added test coverage for legal comments appearing above directives

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

File	Description
crates/oxc_codegen/src/gen.rs	Added print_comments_at call to preserve legal comments before directives
crates/oxc_codegen/tests/integration/comments.rs	Added test case for legal comments above directives
crates/oxc_codegen/tests/integration/snapshots/*.snap	Updated snapshots to reflect the fix and test framework changes

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[codspeed-hq]

CodSpeed Performance Report

Merging #14993 will not alter performance

_{Comparing fix/legal-comment-directives (09ea312) with main (384ea3c)¹}

Summary

✅ 37 untouched

Footnotes

1. No successful run was found on main (7bcc6b0) during the generation of this report, so 384ea3c was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

[Boshen]

Merge activity

• Oct 27, 1:09 PM UTC: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• Oct 27, 1:13 PM UTC: Boshen added this pull request to the Graphite merge queue.
• Oct 27, 1:19 PM UTC: Merged by the Graphite merge queue.