fix(core): update

ts/smartfuzzy.articlesearch.ts

@@ -0,0 +1,64 @@
+import * as plugins from './smartfuzzy.plugins';
+
+/**
+ * an article search that searches articles in a weighted manner
+ */
+export class ArticleSearch {
+  public articles: plugins.tsclass.content.IArticle[] = [];
+  public needsUpdate: boolean = false;
+
+  private readyDeferred = plugins.smartpromise.defer();
+  private fuse: plugins.fuseJs<plugins.tsclass.content.IArticle>;
+
+  constructor(articleArrayArg?: plugins.tsclass.content.IArticle[]) {
+    this.fuse = new plugins.fuseJs(this.articles);
+    this.readyDeferred.resolve();
+    if (articleArrayArg) {
+      for (const article of articleArrayArg) {
+        this.addArticle(article);
+      }
+    }
+  }
+
+  /**
+   * allows adding an article
+   */
+  addArticle(articleArg: plugins.tsclass.content.IArticle) {
+    this.articles.push(articleArg);
+    this.needsUpdate = true;
+  }
+
+  /**
+   * allows searching an article
+   */
+  public async search(searchStringArg: string) {
+    if (this.needsUpdate) {
+      const oldDeferred = this.readyDeferred;
+      this.readyDeferred = plugins.smartpromise.defer();
+      this.needsUpdate = false;
+      if (oldDeferred.status !== 'fulfilled') {
+        this.readyDeferred.promise.then(oldDeferred.resolve);
+      }
+      this.fuse = new plugins.fuseJs(this.articles, {
+        keys: [
+          {
+            name: 'title',
+            weight: 3,
+          },
+          {
+            name: 'tags',
+            weight: 2,
+          },
+          {
+            name: 'content',
+            weight: 1,
+          },
+        ],
+      });
+      this.readyDeferred.resolve();
+    } else {
+      await this.readyDeferred.promise;
+    }
+    return this.fuse.search(searchStringArg);
+  }
+}