fix(path): honor empty parse and format fields

[ShiroKSH]

Summary

• Return an empty dir from basename-only path.parse calls.
• Let empty dir fall back to root and empty base fall back to name plus ext in path.format.
• Add POSIX and Windows regressions.

Root cause

path.parse substituted a dot for a missing directory. path.format chose dir and base from their property type instead of their non-empty values.

Checks

• node --check tests/test_path_parse_format.cjs
• node tests/test_path_parse_format.cjs
• git diff --check

Summary by CodeRabbit

• Bug Fixes

  • Corrected path parsing so basename-only paths return an empty directory value.
  • Improved path formatting fallbacks when directory or basename components are empty or missing.
  • Ensured name and extension components are used appropriately when the basename is empty.
  • Preserved correct directory precedence for Windows-style paths.

• Tests

  • Added coverage for POSIX and Windows path parsing and formatting edge cases.

[github-actions]

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[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 141abeff-1491-495b-8373-48a4b603c51c

📥 Commits

Reviewing files that changed from the base of the PR and between 78732d3 and 27184cc.

📒 Files selected for processing (2)

• src/modules/path.c
• tests/test_path_parse_format.cjs

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📝 Walkthrough

Walkthrough

Path parsing now returns empty directories for basename-only paths. Path formatting distinguishes missing or empty dir and base values, applying root or name/ext fallbacks accordingly. New tests cover POSIX and Windows parse/format behavior.

Changes

Path component handling

Layer / File(s)	Summary
Parse and format fallback behavior src/modules/path.c, tests/test_path_parse_format.cjs	Parsing returns an empty dir for basename-only paths. Formatting tracks non-empty dir and base values to apply root or name/ext fallbacks, with tests covering POSIX and Windows cases.

Estimated code review effort: 2 (Simple) | ~10 minutes

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[theMackabu]

vouch @ShiroKSH