Change highlight syntax

Author: Ives van Hoorne

src/app/components/sandbox/CodeEditor/CodeMirror.js

@@ -205,7 +205,7 @@ const highlightLines = (
   highlightedLines: Array<string>
 ) => {
   highlightedLines.forEach(line => {
-    cm.addLineClass(+line, 'background', 'cm-line-highlight');
+    cm.addLineClass(+line - 1, 'background', 'cm-line-highlight');
   });
 };
 

src/common/url.js

@@ -20,12 +20,8 @@ export const getSandboxOptions = (url: string) => {
   }
 
   const highlightMatch = url.match(/(\?|&)(highlights)=([^&]+)/);
-  if (highlightMatch) {
-    const lineHighlightsMatch = highlightMatch[3].match(/{(.*)}/);
-
-    if (lineHighlightsMatch) {
-      result.highlightedLines = lineHighlightsMatch[1].split(',');
-    }
+  if (highlightMatch && highlightMatch[3]) {
+    result.highlightedLines = highlightMatch[3].split(',');
   }
 
   const editorSizeMatch = url.match(/(\?|&)(editorsize)=([^&]+)/);