fix(wrangler): default worker entrypoint suport with wrangler types (#9897)

Author: edmundhung

.changeset/sad-experts-return.md

@@ -0,0 +1,5 @@
+---
+"wrangler": patch
+---
+
+fix: wrangler types should infer the types of the default worker entrypoint

packages/wrangler/src/__tests__/type-generation.test.ts

@@ -701,9 +701,9 @@ describe("generate types", () => {
 					D1_TESTING_SOMETHING: D1Database;
 					SECRET: SecretsStoreSecret;
 					HELLO_WORLD: HelloWorldBinding;
-					SERVICE_BINDING: Fetcher /* service_name */;
+					SERVICE_BINDING: Service<typeof import(\\"../b/index\\").default>;
 					OTHER_SERVICE_BINDING: Service /* entrypoint FakeEntrypoint from service_name_2 */;
-					OTHER_SERVICE_BINDING_ENTRYPOINT: Service<import(\\"../c/index\\").RealEntrypoint>;
+					OTHER_SERVICE_BINDING_ENTRYPOINT: Service<typeof import(\\"../c/index\\").RealEntrypoint>;
 					AE_DATASET_BINDING: AnalyticsEngineDataset;
 					NAMESPACE_BINDING: DispatchNamespace;
 					LOGFWDR_SCHEMA: any;

packages/wrangler/src/type-generation/index.ts

@@ -464,13 +464,13 @@ export async function generateEnvTypes(
 				: undefined;
 
 			const exportExists = serviceEntry?.exports?.some(
-				(e) => e === service.entrypoint
+				(e) => e === (service.entrypoint ?? "default")
 			);
 
 			let typeName: string;
 
 			if (importPath && exportExists) {
-				typeName = `Service<import("${importPath}").${service.entrypoint ?? "default"}>`;
+				typeName = `Service<typeof import("${importPath}").${service.entrypoint ?? "default"}>`;
 			} else if (service.entrypoint) {
 				typeName = `Service /* entrypoint ${service.entrypoint} from ${service.service} */`;
 			} else {