perf: make a single git call for timestamps instead of calling it for each file

[brc-dd]

--- Autogenerated ---

This pull request optimizes how git timestamps are retrieved and cached for markdown files, improving both performance and reliability of the sitemap generation process. The main changes include introducing a new bulk caching function for git timestamps, updating related imports, and ensuring consistent path handling.

Git Timestamp Caching Improvements:

• Added a new function cacheAllGitTimestamps in src/node/utils/getGitTimestamp.ts to efficiently pre-fetch and cache git timestamps for all markdown files in a repository using a single git command. This reduces the number of individual git calls during site generation.
• Updated the getGitTimestamp function to use the cached values and improved its logic for parsing git output and handling file paths.

Integration with Build and Plugin System:

• In src/node/plugin.ts, imported cacheAllGitTimestamps and invoked it in the VitePress plugin setup to pre-resolve timestamps for all markdown files when the lastUpdated feature is enabled. [1] [2]

Path Handling Consistency:

• Ensured that file paths are normalized using the slash utility when retrieving git timestamps, both in src/node/build/generateSitemap.ts and src/node/utils/getGitTimestamp.ts, to prevent mismatches and improve cross-platform compatibility. [1] [2] [3]

[brc-dd]

/publish

[pkg-pr-new]

npm i https://pkg.pr.new/vitepress@4958

commit: 6e8239a

[Copilot]

Pull Request Overview

This pull request optimizes git timestamp retrieval for VitePress by implementing bulk caching to reduce individual git calls during site generation. The optimization pre-fetches all git timestamps using a single git command and caches them for later use.

• Introduces cacheAllGitTimestamps function to bulk retrieve and cache git timestamps for all markdown files
• Integrates timestamp pre-caching into the VitePress plugin setup when lastUpdated is enabled
• Normalizes file paths using the slash utility for cross-platform compatibility

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
src/node/utils/getGitTimestamp.ts	Adds bulk caching function and updates existing timestamp retrieval logic
src/node/plugin.ts	Integrates pre-caching into plugin setup when lastUpdated feature is enabled
src/node/build/generateSitemap.ts	Normalizes file paths when calling getGitTimestamp

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}