fix(core): update

ts/servertools/classes.feed.ts

@@ -0,0 +1,35 @@
+import { Handler } from './classes.handler.js';
+import { Server } from './classes.server.js';
+import * as plugins from '../typedserver.plugins.js';
+
+export class Feed {
+  public smartexpressRef: Server;
+  public smartfeedInstance = new plugins.smartfeed.Smartfeed();
+
+  public feedHandler = new Handler('GET', async (req, res) => {
+    if (!this.smartexpressRef.options.feedMetadata) {
+      res.status(500);
+      res.write('feed metadata is missing');
+      res.end();
+      return;
+    }
+    if (!this.smartexpressRef.options.articleGetterFunction) {
+      res.status(500);
+      res.write('no article getter function defined.');
+      res.end();
+      return;
+    }
+    const xmlString = await this.smartfeedInstance.createFeedFromArticleArray(
+      this.smartexpressRef.options.feedMetadata,
+      await this.smartexpressRef.options.articleGetterFunction()
+    );
+    res.type('.xml');
+    res.write(xmlString);
+    res.end();
+  });
+
+  constructor(smartexpressRefArg: Server) {
+    this.smartexpressRef = smartexpressRefArg;
+    this.smartexpressRef.addRouteBefore('/feed', this.feedHandler);
+  }
+}