Remove double watcher; add default value to linkPreview function

frontend/src/assets/js/linkExpander.js

@@ -29,7 +29,6 @@ export default {
 				completedAPICall();
 			};
 
-
 			let parsed = document.createElement('div');
 			parsed.innerHTML = HTML;
 

frontend/src/components/InputEditorPreview.vue

@@ -33,9 +33,6 @@
 				HTML: ''
 			}
 		},
-		watch: {
-			value: 'getHTML'
-		},
 		computed: {
 			valueWatch () {
 				this.getHTML();

lib/linkPreview/index.js

@@ -10,7 +10,7 @@ let previewPatterns =
 	      return require(path.join(__dirname, 'patterns', file));
 	  });
 
-module.exports =  async function linkPreview(url) {
+module.exports =  async function linkPreview(url = '') {
 	let previewData;
 
 	for(let pattern of previewPatterns) {