adding lastModified property to objectfile and add lastMod tag in xml sitemap

Author: gauthier

docs/.vuepress/config.js

@@ -1,7 +1,8 @@
 module.exports = {
  dest: 'vuepress',
  sitemap: {
- domain: 'https://vuepress.vuejs.org'
+ domain: 'https://vuepress.vuejs.org',
+ filename: 'test.xml'
  },
  locales: {
  '/': {

docs/config/README.md

@@ -198,6 +198,12 @@ module.exports = {
  }
 }
 ```
+### sitemap
+
+- Type: `Object`
+- Default: `undefined`
+
+Defined sitemap option
 
 ## Browser Compatibility
 

lib/prepare.js

@@ -157,7 +157,8 @@ async function resolveOptions (sourceDir) {
  const data = {
  path: fileToPath(file)
  }
-
+ const f = await fs.stat(path.resolve(sourceDir, file))
+ data.lastModified = new Date(f.mtime).toISOString()
  // extract yaml frontmatter
  const content = await fs.readFile(path.resolve(sourceDir, file), 'utf-8')
  const frontmatter = yaml.loadFront(content)

lib/util/sitemap.js

@@ -2,9 +2,13 @@ const { fileNameConverter } = require('./index')
 
 function xmlFormatter (options) {
  const content = options.siteData.pages.reduce((prev, current) => {
+ console.log(JSON.stringify(current, null, 2))
  const filename = fileNameConverter(current.path)
  const url = options.siteConfig.sitemap.domain + options.siteData.base + filename
- return prev + `<url><loc>${url}</loc></url>`
+ return prev + `<url>
+ <loc>${url}</loc>
+ <lastmod>${current.lastModified}</lastmod>
+ </url>`
  }, '')
  return `<?xml version="1.0" encoding="UTF-8"?>
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">