fix(core): update

ts/index.ts

@@ -6,4 +6,16 @@ export class Smartfeed {
     const feedVersion = new Feed(optionsArg);
     return feedVersion;
   }
+
+  public async parseFeedFromString(rssFeedString: string) {
+    const parser = new plugins.rssParser();
+    const resultingFeed = await parser.parseString(rssFeedString);
+    return resultingFeed;
+  }
+
+  public async parseFeedFromUrl(urlArg: string) {
+    const parser = new plugins.rssParser();
+    const resultingFeed = await parser.parseURL(urlArg);
+    return resultingFeed;
+  }
 }

ts/smartfeed.plugins.ts

@@ -1,6 +1,8 @@
 // third party scope
+import rssParser from 'rss-parser';
 import * as feed from 'feed';
 
 export {
+  rssParser,
   feed
 };