#118 - Improved caching

That will teach me to read documentation (it won't).

src/search/search-engine.ts

@@ -89,12 +89,15 @@ export class SearchEngine {
   }
 
   /**
-   * Must be called when the background indexing is done,
-   * to load the freshest data into the main instance
+   * Loads the freshest indexed data into the main instance.
    */
-  public static swapEngines(): void {
-    ;[this.engine, this.tmpEngine] = [this.tmpEngine, this.engine]
-    this.isIndexing.set(false)
+  public static loadTmpDataIntoMain(): void {
+    const tmpData = this.tmpEngine.minisearch.toJSON()
+    this.engine.minisearch = MiniSearch.loadJS(tmpData, minisearchOptions);
+  }
+
+  public static clearTmp():void {
+    this.tmpEngine.minisearch = new MiniSearch(minisearchOptions)
   }
 
   private minisearch: MiniSearch