fix(tools): adjust create language block helper script (#62090)

tools/challenge-helper-scripts/helpers/create-project.test.ts

@@ -70,6 +70,26 @@ describe('updateSimpleSuperblockStructure', () => {
       }
     );
   });
+
+  it('should insert the block into the blocks array at the end when no order is given', async () => {
+    const existingBlocks = ['block1', 'block2'];
+    const superblockFilename = 'test-superblock';
+    const newBlock = 'block3';
+
+    mockGetSuperblockStructure.mockReturnValue({
+      blocks: existingBlocks
+    });
+
+    await updateSimpleSuperblockStructure(newBlock, {}, superblockFilename);
+
+    expect(mockGetSuperblockStructure).toHaveBeenCalledWith(superblockFilename);
+    expect(mockWriteSuperblockStructure).toHaveBeenCalledWith(
+      superblockFilename,
+      {
+        blocks: ['block1', 'block2', 'block3']
+      }
+    );
+  });
 });
 
 describe('updateChapterModuleSuperblockStructure', () => {

tools/challenge-helper-scripts/helpers/create-project.ts

@@ -8,14 +8,20 @@ import { insertInto } from './utils';
 
 export async function updateSimpleSuperblockStructure(
   block: string,
-  position: { order: number },
+  position: { order?: number },
   superblockFilename: string
 ) {
   const existing = getSuperblockStructure(superblockFilename) as {
     blocks: string[];
   };
+
+  const order =
+    typeof position.order === 'number'
+      ? position.order
+      : existing.blocks.length;
+
   const updated = {
-    blocks: insertInto(existing.blocks, position.order, block)
+    blocks: insertInto(existing.blocks, order, block)
   };
   await writeSuperblockStructure(superblockFilename, updated);
 }