Add parsing of description after the @component

lib/v3/parser.js

@@ -117,7 +117,10 @@ class Parser extends EventEmitter {
     emitGlobalComment(comment) {
         if (comment && utils.isTopLevelComment(comment)) {
             if (this.features.includes('description')) {
-                this.emit(ParserEvent.DESCRIPTION, comment.description);
+                const description = comment.description || 
+                    comment.keywords.find(k => k.name === 'component').description;
+
+                this.emit(ParserEvent.DESCRIPTION, description);
             }
 
             if (this.features.includes('keywords')) {

test/svelte3/integration/globalComment/globalComment.markup-off.svelte

@@ -0,0 +1,23 @@
+<script>
+  /** What should we call the user? */
+  export let name = 'world';
+</script>
+
+<!--
+@component
+Here's some documentation for this component.
+It will show up on hover.
+
+- You can use markdown here.
+- You can also use code blocks here.
+- Usage:
+  ```tsx
+  <main name="Arethra">
+  ```
+-->
+<main>
+  <h1>
+    Hello, {name}
+  </h1>
+</main>
+

test/svelte3/integration/globalComment/globalComment.spec.js

@@ -27,6 +27,24 @@ describe('SvelteDoc v3 - Global component', () => {
         }).catch(done);
     });
 
+    it('Global component data should be parsed with HTML comment (Official Example)', (done) => {
+        parser.parse({
+            version: 3,
+            filename: path.resolve(__dirname, 'globalComment.markup-off.svelte'),
+            features: ['description', 'keywords'],
+            includeSourceLocations: true,
+            ignoredVisibilities: []
+        }).then((doc) => {
+            expect(doc, 'Document should be provided').to.exist;
+            expect(doc.description, 'Document description should be parsed').to.exist;
+            expect(doc.keywords, 'Document keywords should be parsed').to.exist;
+
+            expect(doc.description, 'Document description text').to.contain("Here's some documentation for this component.");
+            expect(doc.keywords, 'Document keywords length').to.have.length(1);
+            done();
+        }).catch(done);
+    });
+
     it('Global component data should be parsed with JS comment', (done) => {
         parser.parse({
             version: 3,