chore: release v5.5.3

- Bump version from 5.5.3-b2 to 5.5.3 in package.json
- Update third-party dependencies:
  * algolia_search: 5.43.0 -> 5.46.0
  * docsearch: 4.3.1 -> 4.3.2
  * fancybox: 6.1.4 -> 6.1.7
  * katex: 0.16.25 -> 0.16.27
  * mermaid: 11.12.1 -> 11.12.2
  * waline: 3.7.1 -> 3.8.0

perf: optimize JavaScript performance
- Add defer attribute to script tags in pjax and prismjs
- Improve DOM content loading timing in pjax
- Optimize utilities with better throttle implementation
- Cache header positions for TOC performance
- Optimize related posts generation with Maps
- Improve archive helpers performance

fix: improve error handling and UI fixes
- Replace process.exit with proper error throwing
- Fix tooltip positioning with boundary checks
- Add btn-effects to readmode exit button
- Fix element height calculation for hidden elements
- Improve image filters in dark mode (brightness .88, contrast .95)

style: code improvements and consistency
- Refactor random cover generation with generator pattern
- Optimize data processing in helpers
- Clean up unused functions and improve code structure
- Fix Chinese translation: 页 -> 頁

scripts/events/cdn.js

@@ -46,45 +46,43 @@ hexo.extend.filter.register('before_generate', () => {
   }
 
   const createCDNLink = (data, type, cond = '') => {
-    Object.keys(data).forEach(key => {
-      let { name, version, file, other_name } = data[key]
-      const cdnjs_name = other_name || name
-      const cdnjs_file = file.replace(/^[lib|dist]*\/|browser\//g, '')
-      const min_cdnjs_file = minFile(cdnjs_file)
+    return Object.keys(data).reduce((result, key) => {
+      let { name, version, file, other_name: otherName } = data[key]
+      const cdnjsName = otherName || name
+      const cdnjsFile = file.replace(/^[lib|dist]*\/|browser\//g, '')
+      const minCdnjsFile = minFile(cdnjsFile)
       if (cond === 'internal') file = `source/${file}`
-      const min_file = minFile(file)
+      const minFilePath = minFile(file)
       const verType = CDN.version ? (type === 'local' ? `?v=${version}` : `@${version}`) : ''
 
       const value = {
         version,
         name,
         file,
-        cdnjs_file,
-        min_file,
-        min_cdnjs_file,
-        cdnjs_name
+        cdnjs_file: cdnjsFile,
+        min_file: minFilePath,
+        min_cdnjs_file: minCdnjsFile,
+        cdnjs_name: cdnjsName
       }
 
       const cdnSource = {
-        local: cond === 'internal' ? `${cdnjs_file + verType}` : `/pluginsSrc/${name}/${file + verType}`,
-        jsdelivr: `https://cdn.jsdelivr.net/npm/${name}${verType}/${min_file}`,
+        local: cond === 'internal' ? `${cdnjsFile + verType}` : `/pluginsSrc/${name}/${file + verType}`,
+        jsdelivr: `https://cdn.jsdelivr.net/npm/${name}${verType}/${minFilePath}`,
         unpkg: `https://unpkg.com/${name}${verType}/${file}`,
-        cdnjs: `https://cdnjs.cloudflare.com/ajax/libs/${cdnjs_name}/${version}/${min_cdnjs_file}`,
+        cdnjs: `https://cdnjs.cloudflare.com/ajax/libs/${cdnjsName}/${version}/${minCdnjsFile}`,
         custom: (CDN.custom_format || '').replace(/\$\{(.+?)\}/g, (match, $1) => value[$1])
       }
 
-      data[key] = cdnSource[type]
-    })
-
-    if (cond === 'internal') data.main_css = 'css/index.css' + (CDN.version ? `?v=${version}` : '')
-    return data
+      result[key] = cdnSource[type]
+      return result
+    }, cond === 'internal' ? { main_css: 'css/index.css' + (CDN.version ? `?v=${version}` : '') } : {})
   }
 
   // delete null value
   const deleteNullValue = obj => {
-    if (!obj) return
+    if (!obj) return {}
     for (const i in obj) {
-      obj[i] === null && delete obj[i]
+      if (obj[i] === null) delete obj[i]
     }
     return obj
   }

scripts/events/init.js

@@ -17,7 +17,7 @@ function checkHexoEnvironment (hexo) {
   if (major < requiredMajor || (major === requiredMajor && minor < requiredMinor)) {
     log.error('Please update Hexo to V5.3.0 or higher!')
     log.error('請把 Hexo 升級到 V5.3.0 或更高的版本！')
-    process.exit(-1)
+    throw new Error('Hexo version too old')
   }
 
   // Check for deprecated configuration file
@@ -26,7 +26,7 @@ function checkHexoEnvironment (hexo) {
     if (data && data.butterfly) {
       log.error("'butterfly.yml' is deprecated. Please use '_config.butterfly.yml'")
       log.error("'butterfly.yml' 已經棄用，請使用 '_config.butterfly.yml'")
-      process.exit(-1)
+      throw new Error('Deprecated configuration file')
     }
   }
 }

scripts/filters/random_cover.js

@@ -5,39 +5,46 @@
 'use strict'
 
 hexo.extend.generator.register('post', locals => {
-  const previousIndexes = []
+  const imgTestReg = /\.(png|jpe?g|gif|svg|webp|avif)(\?.*)?$/i
+  const { post_asset_folder: postAssetFolder } = hexo.config
+  const { cover: { default_cover: defaultCover } } = hexo.theme.config
 
-  const getRandomCover = defaultCover => {
-    if (!defaultCover) return false
-    if (!Array.isArray(defaultCover)) return defaultCover
+  function * createCoverGenerator () {
+    if (!defaultCover) {
+      while (true) yield false
+    }
+    if (!Array.isArray(defaultCover)) {
+      while (true) yield defaultCover
+    }
 
     const coverCount = defaultCover.length
-
     if (coverCount === 1) {
-      return defaultCover[0]
+      while (true) yield defaultCover[0]
     }
 
-    const maxPreviousIndexes = coverCount === 2 ? 1 : (coverCount === 3 ? 2 : 3)
+    const maxHistory = Math.min(3, coverCount - 1)
+    const history = []
 
-    let index
-    do {
-      index = Math.floor(Math.random() * coverCount)
-    } while (previousIndexes.includes(index) && previousIndexes.length < coverCount)
+    while (true) {
+      let index
+      do {
+        index = Math.floor(Math.random() * coverCount)
+      } while (history.includes(index))
 
-    previousIndexes.push(index)
-    if (previousIndexes.length > maxPreviousIndexes) {
-      previousIndexes.shift()
+      history.push(index)
+      if (history.length > maxHistory) history.shift()
+
+      yield defaultCover[index]
     }
-
-    return defaultCover[index]
   }
 
+  const coverGenerator = createCoverGenerator()
+
   const handleImg = data => {
-    const imgTestReg = /\.(png|jpe?g|gif|svg|webp|avif)(\?.*)?$/i
     let { cover: coverVal, top_img: topImg } = data
 
     // Add path to top_img and cover if post_asset_folder is enabled
-    if (hexo.config.post_asset_folder) {
+    if (postAssetFolder) {
       if (topImg && topImg.indexOf('/') === -1 && imgTestReg.test(topImg)) {
         data.top_img = `${data.path}${topImg}`
       }
@@ -50,10 +57,9 @@ hexo.extend.generator.register('post', locals => {
 
     // If cover is not set, use random cover
     if (!coverVal) {
-      const { cover: { default_cover: defaultCover } } = hexo.theme.config
-      const randomCover = getRandomCover(defaultCover)
+      const randomCover = coverGenerator.next().value
       data.cover = randomCover
-      coverVal = randomCover // update coverVal
+      coverVal = randomCover
     }
 
     if (coverVal && (coverVal.indexOf('//') !== -1 || imgTestReg.test(coverVal))) {
@@ -63,7 +69,6 @@ hexo.extend.generator.register('post', locals => {
     return data
   }
 
-  // https://github.com/hexojs/hexo/blob/master/lib%2Fplugins%2Fgenerator%2Fpost.ts
   const posts = locals.posts.sort('date').toArray()
   const { length } = posts