Fix vitest-pool-workers when nodejs_compat is enabled

.changeset/gold-paws-serve.md

@@ -0,0 +1,5 @@
+---
+"@cloudflare/vitest-pool-workers": minor
+---
+
+Infer latest locally available compatibility date if none is provided in the test configuration

.changeset/true-groups-end.md

@@ -0,0 +1,5 @@
+---
+"@cloudflare/vitest-pool-workers": patch
+---
+
+ensure that vitest specific nodejs polyfills override native modules

fixtures/vitest-pool-workers-examples/ai-vectorize/wrangler.jsonc

@@ -1,6 +1,7 @@
 {
 	"name": "ai-vectorize",
 	"main": "src/index.ts",
+	// compatibility_date is required so we can run `wrangler build`
 	"compatibility_date": "2025-03-20",
 	"ai": {
 		"binding": "AI",

fixtures/vitest-pool-workers-examples/basics-integration-auxiliary/wrangler.jsonc

@@ -1,5 +1,6 @@
 {
 	"name": "basics-integration-auxiliary",
 	"main": "src/index.ts",
+	// compatibility_date is required so we can run `wrangler build`
 	"compatibility_date": "2024-01-01",
 }

fixtures/vitest-pool-workers-examples/basics-unit-integration-self/test/fetch-integration-self.test.ts

@@ -7,5 +7,5 @@ it("dispatches fetch event", async () => {
 	// Importantly, it uses the exact `import("../src").default` instance we could
 	// import in this file as its handler.
 	const response = await SELF.fetch("http://example.com");
-	expect(await response.text()).toBe("👋 http://example.com");
+	expect(await response.text()).toBe("👋 http://example.com/");
 });

fixtures/vitest-pool-workers-examples/basics-unit-integration-self/test/fetch-unit.test.ts

@@ -16,10 +16,10 @@ it("dispatches fetch event", async () => {
 	const ctx = createExecutionContext();
 	const response = await worker.fetch(request, env, ctx);
 	await waitOnExecutionContext(ctx);
-	expect(await response.text()).toBe("👋 http://example.com");
+	expect(await response.text()).toBe("👋 http://example.com/");
 });
 
 it("calls arbitrary function", () => {
 	const request = new Request("http://example.com");
-	expect(greet(request)).toBe("👋 http://example.com");
+	expect(greet(request)).toBe("👋 http://example.com/");
 });

fixtures/vitest-pool-workers-examples/basics-unit-integration-self/wrangler.jsonc

@@ -1,5 +1,5 @@
 {
 	"name": "basics-unit-integration-self",
 	"main": "src/index.ts",
-	"compatibility_date": "2024-01-01",
+	// don't provide compatibility_date so that vitest will infer the latest one
 }

fixtures/vitest-pool-workers-examples/container-app/wrangler.jsonc

@@ -1,7 +1,7 @@
 {
 	"name": "container-app",
 	"main": "src/index.ts",
-	"compatibility_date": "2025-04-03",
+	// don't provide compatibility_date so that vitest will infer the latest one
 	"containers": [
 		{
 			"image": "./Dockerfile",

fixtures/vitest-pool-workers-examples/d1/wrangler.jsonc

@@ -1,7 +1,7 @@
 {
 	"name": "d1",
 	"main": "src/index.ts",
-	"compatibility_date": "2024-01-01",
+	// don't provide compatibility_date so that vitest will infer the latest one
 	"env": {
 		"production": {
 			"d1_databases": [

fixtures/vitest-pool-workers-examples/durable-objects/wrangler.jsonc

@@ -1,7 +1,7 @@
 {
 	"name": "durable-objects",
 	"main": "src/index.ts",
-	"compatibility_date": "2024-01-01",
+	// don't provide compatibility_date so that vitest will infer the latest one
 	"durable_objects": {
 		"bindings": [
 			{

fixtures/vitest-pool-workers-examples/hyperdrive/wrangler.jsonc

@@ -1,7 +1,7 @@
 {
 	"name": "hyperdrive",
 	"main": "src/index.ts",
-	"compatibility_date": "2024-01-01",
+	// don't provide compatibility_date so that vitest will infer the latest one
 	"hyperdrive": [
 		{
 			"binding": "ECHO_SERVER_HYPERDRIVE",

fixtures/vitest-pool-workers-examples/images/wrangler.jsonc

@@ -1,7 +1,7 @@
 {
 	"name": "images",
 	"main": "src/index.ts",
-	"compatibility_date": "2025-02-04",
+	// don't provide compatibility_date so that vitest will infer the latest one
 	"images": {
 		"binding": "IMAGES",
 	},

fixtures/vitest-pool-workers-examples/kv-r2-caches/wrangler.jsonc

@@ -1,7 +1,7 @@
 {
 	"name": "kv-r2-caches",
 	"main": "src/index.ts",
-	"compatibility_date": "2024-01-01",
+	// don't provide compatibility_date so that vitest will infer the latest one
 	"kv_namespaces": [
 		{
 			"binding": "KV_NAMESPACE",

fixtures/vitest-pool-workers-examples/misc/test/nodejs.test.ts

@@ -0,0 +1,8 @@
+import { afterEach, beforeEach, expect, it, vi } from "vitest";
+
+it("runs in Node.js compatibility mode", () => {
+	expect(typeof process).toBe("object");
+	expect(process.versions).toBeDefined();
+	expect(process.versions.node).toBeDefined();
+	expect(typeof Buffer).toBe("function");
+});

fixtures/vitest-pool-workers-examples/misc/test/pages-functions.test.ts

@@ -84,7 +84,7 @@ it("requires next property to call next()", async () => {
 	const fn: BareFunction = (ctx) => ctx.next();
 	const request = new IncomingRequest("https://example.com");
 	const ctx = createPagesEventContext<typeof fn>({ request });
-	expect(fn(ctx)).rejects.toThrowErrorMatchingInlineSnapshot(
+	await expect(fn(ctx)).rejects.toThrowErrorMatchingInlineSnapshot(
 		`[TypeError: Cannot call \`EventContext#next()\` without including \`next\` property in 2nd argument to \`createPagesEventContext()\`]`
 	);
 });

fixtures/vitest-pool-workers-examples/misc/vitest.config.ts

@@ -7,7 +7,7 @@ export default defineWorkersProject({
 		"CONFIG_NESTED.DEFINED.THING": "[1,2,3]",
 	},
 	test: {
-		exclude: ["test/assets.test.ts"],
+		exclude: ["test/assets.test.ts", "test/nodejs.test.ts"],
 		poolOptions: {
 			workers: {
 				singleWorker: true,

fixtures/vitest-pool-workers-examples/misc/vitest.nodejs.config.ts

@@ -0,0 +1,16 @@
+import { defineWorkersProject } from "@cloudflare/vitest-pool-workers/config";
+
+export default defineWorkersProject({
+	test: {
+		name: "misc-nodejs",
+		include: ["test/nodejs.test.ts"],
+		poolOptions: {
+			workers: {
+				singleWorker: true,
+				wrangler: {
+					configPath: "./wrangler.nodejs.jsonc",
+				},
+			},
+		},
+	},
+});

fixtures/vitest-pool-workers-examples/misc/wrangler.jsonc

@@ -1,6 +1,6 @@
 {
 	"$schema": "../node_modules/wrangler/config-schema.json",
-	"compatibility_date": "2024-01-01",
+	// don't provide compatibility_date so that vitest will infer the latest one
 	"define": {
 		"WRANGLER_DEFINED_THING": "\"thing\"",
 		"WRANGLER_NESTED.DEFINED.THING": "[1,2,3]",

fixtures/vitest-pool-workers-examples/misc/wrangler.nodejs.jsonc

@@ -0,0 +1,5 @@
+{
+	"$schema": "../node_modules/wrangler/config-schema.json",
+	// don't provide compatibility_date so that vitest will infer the latest one
+	"compatibility_flags": ["nodejs_compat"],
+}

fixtures/vitest-pool-workers-examples/module-resolution/wrangler.jsonc

@@ -1,5 +1,5 @@
 {
 	"name": "module-resolution",
 	"main": "src/index.ts",
-	"compatibility_date": "2024-04-05",
+	// don't provide compatibility_date so that vitest will infer the latest one
 }

fixtures/vitest-pool-workers-examples/multiple-workers/api-service/wrangler.jsonc

@@ -1,7 +1,7 @@
 {
 	"name": "api-service",
 	"main": "src/index.ts",
-	"compatibility_date": "2024-01-01",
+	// don't provide compatibility_date so that vitest will infer the latest one
 	"services": [
 		{
 			"binding": "AUTH_SERVICE",

fixtures/vitest-pool-workers-examples/multiple-workers/auth-service/wrangler.jsonc

@@ -1,6 +1,7 @@
 {
 	"name": "auth-service",
 	"main": "src/index.ts",
+	// compatibility_date is required so we can run `wrangler build`
 	"compatibility_date": "2024-01-01",
 	/*
    `AUTH_PUBLIC_KEY` would be a secret created with `wrangler secret put`, and

fixtures/vitest-pool-workers-examples/multiple-workers/database-service/wrangler.jsonc

@@ -1,6 +1,7 @@
 {
 	"name": "database-service",
 	"main": "src/index.ts",
+	// compatibility_date is required so we can run `wrangler build`
 	"compatibility_date": "2024-01-01",
 	"kv_namespaces": [
 		{

fixtures/vitest-pool-workers-examples/package.json

@@ -4,11 +4,11 @@
 	"type": "module",
 	"scripts": {
 		"check:type": "node tsc-all.mjs",
-		"list": "vitest --config vitest.workers.config.ts list",
-		"test": "vitest --config vitest.workers.config.ts",
+		"list": "vitest list",
+		"test": "vitest",
 		"test:ci": "run-script-os",
-		"test:ci:default": "vitest run --config vitest.workers.config.ts",
-		"test:ci:win32": "vitest run --config vitest.workers.config.ts --exclude test/sqlite-in-do.test.ts"
+		"test:ci:default": "vitest run",
+		"test:ci:win32": "vitest run --exclude test/sqlite-in-do.test.ts"
 	},
 	"devDependencies": {
 		"@cloudflare/containers": "^0.0.25",

fixtures/vitest-pool-workers-examples/pages-with-config/wrangler.jsonc

@@ -1,5 +1,5 @@
 {
 	"name": "pages-with-config",
-	"compatibility_date": "2024-09-19",
+	// don't provide compatibility_date so that vitest will infer the latest one
 	"pages_build_output_dir": "public",
 }

fixtures/vitest-pool-workers-examples/pipelines/wrangler.jsonc

@@ -1,7 +1,7 @@
 {
 	"name": "pipelines",
 	"main": "src/index.ts",
-	"compatibility_date": "2025-01-01",
+	// don't provide compatibility_date so that vitest will infer the latest one
 	"pipelines": [
 		{
 			"binding": "PIPELINE",

fixtures/vitest-pool-workers-examples/queues/wrangler.jsonc

@@ -1,7 +1,7 @@
 {
 	"name": "queues",
 	"main": "src/index.ts",
-	"compatibility_date": "2024-01-01",
+	// don't provide compatibility_date so that vitest will infer the latest one
 	"kv_namespaces": [
 		{
 			"binding": "QUEUE_RESULTS",

fixtures/vitest-pool-workers-examples/request-mocking/wrangler.jsonc

@@ -1,5 +1,5 @@
 {
 	"name": "request-mocking",
 	"main": "src/index.ts",
-	"compatibility_date": "2024-01-01",
+	// don't provide compatibility_date so that vitest will infer the latest one
 }

fixtures/vitest-pool-workers-examples/rpc/test/unit.test.ts

@@ -22,7 +22,7 @@ describe("named entrypoints", () => {
 			  ],
 			  "method": "GET",
 			  "source": "testNamedHandler",
-			  "url": "https://example.com",
+			  "url": "https://example.com/",
 			}
 		`);
 	});
@@ -31,19 +31,19 @@ describe("named entrypoints", () => {
 			"https://example.com"
 		);
 		expect(await response.json()).toMatchInlineSnapshot(`
-		{
-		  "ctxWaitUntil": "function",
-		  "envKeys": [
-		    "KV_NAMESPACE",
-		    "TEST_NAMED_ENTRYPOINT",
-		    "TEST_NAMED_HANDLER",
-		    "TEST_OBJECT",
-		  ],
-		  "method": "GET",
-		  "source": "TestNamedEntrypoint",
-		  "url": "https://example.com",
-		}
-	`);
+			{
+			  "ctxWaitUntil": "function",
+			  "envKeys": [
+			    "KV_NAMESPACE",
+			    "TEST_NAMED_ENTRYPOINT",
+			    "TEST_NAMED_HANDLER",
+			    "TEST_OBJECT",
+			  ],
+			  "method": "GET",
+			  "source": "TestNamedEntrypoint",
+			  "url": "https://example.com/",
+			}
+		`);
 	});
 	it("calls method with rpc", async () => {
 		const result = await env.TEST_NAMED_ENTRYPOINT.ping();
@@ -85,7 +85,7 @@ describe("Durable Object", () => {
 			  ],
 			  "method": "GET",
 			  "source": "TestObject",
-			  "url": "https://example.com",
+			  "url": "https://example.com/",
 			}
 		`);
 	});

fixtures/vitest-pool-workers-examples/rpc/wrangler.jsonc

@@ -1,8 +1,7 @@
 {
 	"name": "rpc",
 	"main": "src/index.ts",
-	"compatibility_date": "2024-01-01",
-	"compatibility_flags": ["rpc"],
+	// don't provide compatibility_date so that vitest will infer the latest one
 	"kv_namespaces": [
 		{
 			"binding": "KV_NAMESPACE",

fixtures/vitest-pool-workers-examples/vitest.workers.config.ts → fixtures/vitest-pool-workers-examples/vitest.config.ts

@@ -14,6 +14,7 @@ class FilteredPushArray<T> extends Array<T> {
 
 export default defineConfig({
 	test: {
+		projects: ["*/vitest.*config.*ts"],
 		globalSetup: ["./vitest.global.ts"],
 		// Configure the `vite-node` server used by Vitest code to import configs,
 		// custom pools and tests. By default, Vitest effectively applies Vite

fixtures/vitest-pool-workers-examples/web-assembly/wrangler.jsonc

@@ -1,5 +1,5 @@
 {
 	"name": "web-assembly",
 	"main": "src/index.ts",
-	"compatibility_date": "2024-01-01",
+	// don't provide compatibility_date so that vitest will infer the latest one
 }

fixtures/vitest-pool-workers-examples/workers-assets-only/wrangler.jsonc

@@ -1,6 +1,6 @@
 {
 	"name": "workers-static-assets-only",
-	"compatibility_date": "2024-09-19",
+	// don't provide compatibility_date so that vitest will infer the latest one
 	"assets": {
 		"directory": "./public",
 		"html_handling": "none",

fixtures/vitest-pool-workers-examples/workers-assets-run-worker-first/wrangler.jsonc

@@ -1,7 +1,7 @@
 {
 	"name": "workers-static-assets-with-user-worker-run-first",
 	"main": "src/index.ts",
-	"compatibility_date": "2024-09-19",
+	// don't provide compatibility_date so that vitest will infer the latest one
 	"assets": {
 		"directory": "./public",
 		"binding": "ASSETS",

fixtures/vitest-pool-workers-examples/workers-assets/wrangler.jsonc

@@ -1,7 +1,7 @@
 {
 	"name": "workers-static-assets-with-user-worker",
 	"main": "src/index.ts",
-	"compatibility_date": "2024-09-19",
+	// don't provide compatibility_date so that vitest will infer the latest one
 	"assets": {
 		"directory": "./public",
 		"binding": "ASSETS",

fixtures/vitest-pool-workers-examples/workflows/wrangler.jsonc

@@ -1,7 +1,7 @@
 {
 	"name": "workflows",
 	"main": "src/index.ts",
-	"compatibility_date": "2025-02-04",
+	// don't provide compatibility_date so that vitest will infer the latest one
 	"workflows": [
 		{
 			"binding": "MODERATOR",

packages/miniflare/src/index.ts

@@ -1055,7 +1055,9 @@ export class Miniflare {
 				this.#log.debug(`Unable to remove temporary directory: ${String(e)}`);
 			}
 			// Unregister all workers from the dev registry
-			void this.#devRegistry.dispose();
+			this.#devRegistry.dispose()?.catch((e) => {
+				this.#log.debug(`Error disposing Dev Registry: ${getErrorMessage(e)}`);
+			});
 		});
 
 		this.#disposeController = new AbortController();

packages/vitest-pool-workers/scripts/bundle.mjs

@@ -78,7 +78,10 @@ await esbuild.build({
 });
 
 // Build pool, worker and libs
-const libPaths = Array.from(walk(path.join(pkgRoot, "src", "worker", "lib")));
+const libPaths = [
+	...walk(path.join(pkgRoot, "src/worker/lib")),
+	...walk(path.join(pkgRoot, "src/worker/node")),
+];
 
 /** @type {import("esbuild").BuildOptions} */
 const commonOptions = {