docs: change search function from list.js to fuse.js

use debounced fuse.js extended search in search function

config.yml

@@ -50,6 +50,8 @@ module:
       target:           assets/js/vendor/bootstrap.bundle.min.js
     - source:           node_modules/clipboard/dist/clipboard.min.js
       target:           assets/js/vendor/clipboard.min.js
+    - source:           node_modules/fuse.js/dist/fuse.min.js
+      target:           assets/js/vendor/fuse.min.js
 
 params:
   description:          "Official open source SVG icon library for Bootstrap"

docs/assets/js/search.js

@@ -0,0 +1,61 @@
+/* global Fuse:false */
+
+(function () {
+  'use strict'
+
+  const iconsBody = document.querySelector('#icons-body')
+
+  if (!iconsBody) return
+
+  const searchInput = iconsBody.querySelector('#search')
+  const iconListContainer = iconsBody.querySelector('#icons-list')
+  const iconElementList = Array.from(iconListContainer.children)
+
+  const iconDataList = iconElementList.map(element => ({
+    name: element.dataset.name,
+    categories: element.dataset.categories.split(' '),
+    tags: element.dataset.tags.split(' ')
+  }))
+
+  const fuse = new Fuse(iconDataList, {
+    ignoreLocation: true,
+    useExtendedSearch: true,
+    shouldSort: false,
+    keys: ['name', 'categories', 'tags'],
+    threshold: 0
+  })
+
+  function search(searchTerm) {
+    const searchResult = fuse.search(searchTerm)
+
+    iconListContainer.innerHTML = ''
+    if (searchTerm.length > 0) {
+      const resultElements = searchResult.map(result => iconElementList[result.refIndex])
+      iconListContainer.append(...resultElements)
+    } else {
+      iconListContainer.append(...iconElementList)
+    }
+
+    const newUrl = new URL(window.location)
+    if (searchTerm.length > 0) {
+      newUrl.searchParams.set('q', searchTerm)
+    } else {
+      newUrl.searchParams.delete('q')
+    }
+
+    window.history.replaceState(null, null, newUrl)
+  }
+
+  let timeout
+  searchInput.addEventListener('input', () => {
+    clearTimeout(timeout)
+    timeout = setTimeout(() => search(searchInput.value), 250)
+  })
+
+  const query = new URLSearchParams(window.location.search).get('q')
+  if (query) {
+    search(query)
+    searchInput.value = query
+    document.querySelector('#content').scrollIntoView()
+  }
+})()