remove extra newline from bulk mutation variables

Author: jordanverasamy

packages/app/src/cli/services/bulk-operations/stage-file.test.ts

@@ -69,7 +69,7 @@ describe('stageFile', () => {
     const uploadedBlob = fileAppendCall?.[1] as Blob
     const uploadedContent = await uploadedBlob?.text()
 
-    expect(uploadedContent).toBe('{"input":{"id":"gid://shopify/Product/123","tags":["test"]}}\n')
+    expect(uploadedContent).toBe('{"input":{"id":"gid://shopify/Product/123","tags":["test"]}}')
   })
 
   test('handles JSONL with multiple lines correctly', async () => {
@@ -94,7 +94,6 @@ describe('stageFile', () => {
       '{"input":{"id":"gid://shopify/Product/1","title":"New Shirt"}}',
       '{"input":{"id":"gid://shopify/Product/2","title":"Cool Pants"}}',
       '{"input":{"id":"gid://shopify/Product/3","title":"Nice Hat"}}',
-      '',
     ].join('\n')
 
     expect(uploadedContent).toBe(expectedContent)

packages/app/src/cli/services/bulk-operations/stage-file.ts

@@ -18,7 +18,7 @@ interface StageFileOptions {
 export async function stageFile(options: StageFileOptions): Promise<string> {
   const {adminSession, variablesJsonl} = options
 
-  const buffer = Buffer.from(variablesJsonl ? `${variablesJsonl}\n` : '', 'utf-8')
+  const buffer = Buffer.from(variablesJsonl ?? '', 'utf-8')
   const filename = 'bulk-variables.jsonl'
   const size = buffer.length