fix(wrangler): vectorize list-vectors should output valid json (#10517)

* fix(wrangler): vectorize list-vectors should output valid json

* add changeset

Author: edmundhung

.changeset/heavy-planets-feel.md

@@ -0,0 +1,5 @@
+---
+"wrangler": patch
+---
+
+fix: `wrangler vectorize list-vectors --json` now output valid json without an extra log line

packages/wrangler/src/__tests__/vectorize/vectorize.test.ts

@@ -781,8 +781,7 @@ describe("vectorize commands", () => {
 		mockVectorizeV2Request();
 		await runWrangler("vectorize list-vectors test-index --json");
 		expect(std.out).toMatchInlineSnapshot(`
-			"📋 Listing vectors in index 'test-index'...
-			{
+			"{
 			  \\"count\\": 3,
 			  \\"totalCount\\": 5,
 			  \\"isTruncated\\": true,

packages/wrangler/src/vectorize/listVectors.ts

@@ -47,7 +47,9 @@ export const vectorizeListVectorsCommand = createCommand({
 	},
 	positionalArgs: ["name"],
 	async handler(args, { config }) {
-		logger.log(`📋 Listing vectors in index '${args.name}'...`);
+		if (!args.json) {
+			logger.log(`📋 Listing vectors in index '${args.name}'...`);
+		}
 
 		const options: Parameters<typeof listVectors>[2] = {};
 		if (args.count !== undefined) {