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/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