diff --git a/packages/integrations/alpinejs/package.json b/packages/integrations/alpinejs/package.json
index 4e0f4843709d..55f505440206 100644
--- a/packages/integrations/alpinejs/package.json
+++ b/packages/integrations/alpinejs/package.json
@@ -31,7 +31,8 @@
     "build": "astro-scripts build \"src/**/*.ts\" && tsc",
     "build:ci": "astro-scripts build \"src/**/*.ts\"",
     "dev": "astro-scripts dev \"src/**/*.ts\"",
-    "test:e2e": "playwright test"
+    "test:e2e": "playwright test",
+    "typecheck:tests": "tsc --build tsconfig.test.json"
   },
   "peerDependencies": {
     "@types/alpinejs": "^3.0.0",
diff --git a/packages/integrations/alpinejs/test/basics.test.js b/packages/integrations/alpinejs/test/basics.test.ts
similarity index 100%
rename from packages/integrations/alpinejs/test/basics.test.js
rename to packages/integrations/alpinejs/test/basics.test.ts
diff --git a/packages/integrations/alpinejs/test/directive.test.js b/packages/integrations/alpinejs/test/directive.test.ts
similarity index 100%
rename from packages/integrations/alpinejs/test/directive.test.js
rename to packages/integrations/alpinejs/test/directive.test.ts
diff --git a/packages/integrations/alpinejs/test/plugin-script-import.test.js b/packages/integrations/alpinejs/test/plugin-script-import.test.ts
similarity index 100%
rename from packages/integrations/alpinejs/test/plugin-script-import.test.js
rename to packages/integrations/alpinejs/test/plugin-script-import.test.ts
diff --git a/packages/integrations/alpinejs/test/test-utils.js b/packages/integrations/alpinejs/test/test-utils.ts
similarity index 74%
rename from packages/integrations/alpinejs/test/test-utils.js
rename to packages/integrations/alpinejs/test/test-utils.ts
index f18bf6add250..16c57ff68553 100644
--- a/packages/integrations/alpinejs/test/test-utils.js
+++ b/packages/integrations/alpinejs/test/test-utils.ts
@@ -2,7 +2,12 @@ import fs from 'node:fs/promises';
 import path from 'node:path';
 import { fileURLToPath } from 'node:url';
 import { test as testBase } from '@playwright/test';
-import { loadFixture as baseLoadFixture } from '../../../astro/test/test-utils.js';
+import {
+	loadFixture as baseLoadFixture,
+	type Fixture,
+	type AstroInlineConfig,
+	type DevServer,
+} from '../../../astro/test/test-utils.js';
 
 // Get all test files in directory, assign unique port for each of them so they don't conflict
 const testFiles = await fs.readdir(new URL('.', import.meta.url));
@@ -14,7 +19,7 @@ for (let i = 0; i < testFiles.length; i++) {
 	}
 }
 
-function loadFixture(inlineConfig) {
+function loadFixture(inlineConfig: AstroInlineConfig) {
 	if (!inlineConfig?.root) throw new Error("Must provide { root: './fixtures/...' }");
 
 	// resolve the relative root (i.e. "./fixtures/tailwindcss") to a full filepath
@@ -23,15 +28,15 @@ function loadFixture(inlineConfig) {
 		...inlineConfig,
 		root: fileURLToPath(new URL(inlineConfig.root, import.meta.url)),
 		server: {
-			port: testFileToPort.get(path.basename(inlineConfig.root)),
+			port: testFileToPort.get(path.basename(String(inlineConfig.root))),
 		},
 	});
 }
 
-function testFactory(inlineConfig) {
-	let fixture;
+function testFactory(inlineConfig: AstroInlineConfig) {
+	let fixture: Fixture;
 
-	const test = testBase.extend({
+	const test = testBase.extend<{ astro: Fixture }>({
 		// biome-ignore lint/correctness/noEmptyPattern: playwright needs this
 		astro: async ({}, use) => {
 			fixture = fixture || (await loadFixture(inlineConfig));
@@ -46,10 +51,10 @@ function testFactory(inlineConfig) {
 	return test;
 }
 
-export function prepareTestFactory(opts) {
+export function prepareTestFactory(opts: AstroInlineConfig) {
 	const test = testFactory(opts);
 
-	let devServer;
+	let devServer: DevServer;
 
 	test.beforeAll(async ({ astro }) => {
 		devServer = await astro.startDevServer();
diff --git a/packages/integrations/alpinejs/tsconfig.test.json b/packages/integrations/alpinejs/tsconfig.test.json
new file mode 100644
index 000000000000..27c89c5fe7a7
--- /dev/null
+++ b/packages/integrations/alpinejs/tsconfig.test.json
@@ -0,0 +1,17 @@
+{
+  "extends": "../../../tsconfig.base.json",
+  "include": ["test/**/*.ts"],
+  "exclude": ["test/fixtures/**"],
+  "compilerOptions": {
+    "noEmit": true,
+    "allowJs": true,
+    "noUnusedLocals": false,
+    "noUnusedParameters": false,
+    "rewriteRelativeImportExtensions": true
+  },
+  "references": [
+    {
+      "path": "../../astro/tsconfig.test.json"
+    }
+  ]
+}