update line number as splits index

Author: WeihanLi

src/components/editor/json-records-validation.ts

@@ -22,9 +22,9 @@ export function setupJsonRecordsValidation(monaco: typeof MonacoTypes) {
                         errors.forEach((err) => {
                             markers.push({
                                 severity: monaco.MarkerSeverity.Error,
-                                startLineNumber: 0,
-                                startColumn: offset, // +1 for the separator
-                                endLineNumber: 0,
+                                startLineNumber: i,
+                                startColumn: offset,
+                                endLineNumber: i,
                                 endColumn: offset + err.length,
                                 message: err.error.toString(),
                             })

src/model/events/body-formatting.ts

@@ -146,7 +146,7 @@ export const Formatters: { [key in ViewableContentType]: Formatter } = {
                         }
                     });
 
-                    return records.join('');
+                    return records.join('\n');
                     // ^ Same logic as in UI-worker-formatter
                 } catch (e) {
                     // Fallback to showing the raw un-formatted:

src/services/ui-worker-formatters.ts

@@ -93,7 +93,7 @@ const WorkerFormatters = {
                 }
             });
 
-            return records.join('');
+            return records.join('\n');
         } catch (e) {
             return content.toString('utf8');
         }