Merge pull request #20009 from npiyush97/fix-18778

Fix 18778 : template editor fails with multiple templates per file

.changeset/large-comics-knock.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-scaffolder': patch
+---
+
+fixed issue related template editor fails with multiple templates per file.

plugins/scaffolder/src/components/TemplateEditorPage/TemplateEditorForm.tsx

@@ -123,7 +123,10 @@ export function TemplateEditorForm(props: TemplateEditorFormProps) {
           setSteps(undefined);
           return;
         }
-        const parsed: JsonValue = yaml.parse(content);
+        const parsed: JsonValue = yaml
+          .parseAllDocuments(content)
+          .filter(c => c)
+          .map(c => c.toJSON())[0];
 
         if (!isJsonObject(parsed)) {
           setSteps(undefined);