feat: 更新 lazyload 配置，支持原生 lazyload 功能

feat: 代碼優化
feat: 優化 pageType 邏輯
fix: 修復解密文章後， chartjs 沒有加載的 bug

scripts/events/merge_config.js

@@ -547,6 +547,7 @@ hexo.extend.filter.register('before_generate', () => {
     instantpage: false,
     lazyload: {
       enable: false,
+      native: false,
       field: 'site',
       placeholder: null,
       blur: false

scripts/filters/post_lazyload.js

@@ -9,6 +9,10 @@
 const urlFor = require('hexo-util').url_for.bind(hexo)
 
 const lazyload = htmlContent => {
+  if (hexo.theme.config.lazyload.native) {
+    return htmlContent.replace(/(<img.*?)(>)/ig, '$1 loading=\'lazy\'$2')
+  }
+
   const bg = hexo.theme.config.lazyload.placeholder ? urlFor(hexo.theme.config.lazyload.placeholder) : 'data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7'
   return htmlContent.replace(/(<img.*? src=)/ig, `$1 "${bg}" data-lazy-src=`)
 }

scripts/helpers/page.js

@@ -131,3 +131,17 @@ hexo.extend.helper.register('shuoshuoFN', (data, page) => {
 
   return finalResult
 })
+
+hexo.extend.helper.register('getPageType', (page, isHome) => {
+  const { layout, tag, category, type, archive } = page
+  if (layout) return layout
+  if (tag) return 'tag'
+  if (category) return 'category'
+  if (archive) return 'archive'
+  if (type) {
+    if (type === 'tags' || type === 'categories') return type
+    else return 'page'
+  }
+  if (isHome) return 'home'
+  return 'post'
+})