feat: add support for semantic search using operand

assets/js/full-text-search.js

@@ -0,0 +1,61 @@
+; (async function() {
+  const encoder = (str) => str.toLowerCase().split(/([^a-z]|[^\x00-\x7F])+/)
+  const contentIndex = new FlexSearch.Document({
+    cache: true,
+    charset: "latin:extra",
+    optimize: true,
+    index: [
+      {
+        field: "content",
+        tokenize: "reverse",
+        encode: encoder,
+      },
+      {
+        field: "title",
+        tokenize: "forward",
+        encode: encoder,
+      },
+    ],
+  })
+
+  const { content } = await fetchData
+  for (const [key, value] of Object.entries(content)) {
+    contentIndex.add({
+      id: key,
+      title: value.title,
+      content: removeMarkdown(value.content),
+    })
+  }
+
+  const formatForDisplay = (id) => ({
+    id,
+    url: id,
+    title: content[id].title,
+    content: content[id].content,
+  })
+
+  registerHandlers((e) => {
+    term = e.target.value
+    const searchResults = contentIndex.search(term, [
+      {
+        field: "content",
+        limit: 10,
+      },
+      {
+        field: "title",
+        limit: 5,
+      },
+    ])
+    const getByField = (field) => {
+      const results = searchResults.filter((x) => x.field === field)
+      if (results.length === 0) {
+        return []
+      } else {
+        return [...results[0].result]
+      }
+    }
+    const allIds = new Set([...getByField("title"), ...getByField("content")])
+    const finalResults = [...allIds].map(formatForDisplay)
+    displayResults(finalResults, true)
+  })
+})()