Plan
ID:WORK-087Status:donePriority:lowComplexity:simpleMilestone:v1.0.0

Add Sitemap lastmod Support Using File Timestamps

Summary

The sitemap generator in packages/content/src/sitemap.ts currently emits no <lastmod> tags. With $file.modified available in the content pipeline, sitemap generation can include <lastmod> for each page, helping search engines prioritize crawl frequency.

Acceptance Criteria

  • Sitemap XML output includes <lastmod> elements for pages that have a file.modified value
  • <lastmod> uses ISO 8601 date format (YYYY-MM-DD)
  • Pages without a modification date omit <lastmod> rather than emitting an empty element
  • Existing sitemap output structure (URL, priority, changefreq if present) is unaffected
  • Test verifying <lastmod> appears in sitemap output when file timestamps are available

Approach

  1. In packages/content/src/sitemap.ts, read file.modified from page data during serialization
  2. Emit <lastmod> element within the <url> block when the value is present
  3. Add test case

References

  • SPEC-029 (Broader Impact — Sitemap)
  • WORK-084 (variable injection — dependency)
  • packages/content/src/sitemap.ts — sitemap generator

Relationships

Related