[wrangler] Allow r2 bucket list with invalid config

.changeset/r2-bucket-list-no-config.md

@@ -0,0 +1,7 @@
+---
+"wrangler": patch
+---
+
+Allow `wrangler r2 bucket list` to run without a valid Wrangler config
+
+This is an account-level command and does not require parsing `wrangler.toml`/`wrangler.jsonc`. Previously, an invalid local config could prevent listing buckets, making it harder to fix the config.

packages/wrangler/src/__tests__/r2/bucket.test.ts

@@ -208,6 +208,60 @@ describe("r2", () => {
 					creation_date:  01-01-2001"
 				`);
 			});
+
+			it("should list buckets even if the local wrangler config is invalid", async () => {
+				writeWranglerConfig(
+					{
+						r2_buckets: [
+							{
+								binding: "BUCKET",
+								bucket_name: "Invalid_Bucket",
+							},
+						],
+					},
+					"./wrangler.jsonc"
+				);
+
+				const mockBuckets = [
+					{
+						name: "bucket-1-local-once",
+						creation_date: "01-01-2001",
+					},
+					{
+						name: "bucket-2-local-once",
+						creation_date: "01-01-2001",
+					},
+				];
+				msw.use(
+					http.get(
+						"*/accounts/:accountId/r2/buckets",
+						async ({ request, params }) => {
+							const { accountId } = params;
+							expect(accountId).toEqual("some-account-id");
+							expect(await request.text()).toEqual("");
+							return HttpResponse.json(
+								createFetchResult({
+									buckets: mockBuckets,
+								})
+							);
+						},
+						{ once: true }
+					)
+				);
+
+				await runWrangler(`r2 bucket list`);
+				expect(std.out).toMatchInlineSnapshot(`
+					"
+					 ⛅️ wrangler x.x.x
+					──────────────────
+					Listing buckets...
+					name:           bucket-1-local-once
+					creation_date:  01-01-2001
+
+					name:           bucket-2-local-once
+					creation_date:  01-01-2001"
+				`);
+			});
 		});
 
 		describe("info", () => {

packages/wrangler/src/r2/bucket.ts

@@ -183,6 +183,12 @@ export const r2BucketListCommand = createCommand({
 		status: "stable",
 		owner: "Product: R2",
 	},
+	behaviour: {
+		// This is an account-level command and does not require a valid project config.
+		// Keeping config parsing out of the critical path avoids blocking users who are
+		// using `wrangler r2 bucket list` to debug/fix an invalid wrangler.jsonc/toml.
+		provideConfig: false,
+	},
 	args: {
 		jurisdiction: {
 			describe: "The jurisdiction to list",