add the search function to website

lib/search.ts

@@ -0,0 +1,33 @@
+import minisearch from "minisearch";
+import { cutForSearch } from "nodejs-jieba";
+import { getPostFileContent, sortedPosts } from "./post-process";
+
+function tokenizer(str: string) {
+  return cutForSearch(str, true);
+}
+
+function makeSearchIndex() {
+  let miniSearch = new minisearch({
+    fields: ["id", "title", "tags", "subtitle", "summary", "content"],
+    storeFields: ["id", "title", "tags"],
+    tokenize: tokenizer,
+    searchOptions: {
+      fuzzy: 0.1,
+    },
+  });
+  for (let index = 0; index < sortedPosts.allPostList.length; index++) {
+    const post = sortedPosts.allPostList[index];
+    const content = getPostFileContent(post.id);
+    miniSearch.add({
+      id: post.id,
+      title: post.frontMatter.title,
+      tags: post.frontMatter.tags,
+      subtitle: post.frontMatter.subtitle,
+      summary: post.frontMatter.summary,
+      content: content,
+    });
+  }
+  return miniSearch;
+}
+
+export const SearchIndex = makeSearchIndex();