diff --git a/e2e/fixtures/login.js b/e2e/fixtures/login.ts
similarity index 82%
rename from e2e/fixtures/login.js
rename to e2e/fixtures/login.ts
index 85260c2..5991daf 100644
--- a/e2e/fixtures/login.js
+++ b/e2e/fixtures/login.ts
@@ -1,7 +1,13 @@
+import type { Page } from "@playwright/test";
+
 // Drives the real OAuth flow (PAR/PKCE/DPoP) against the devnet PDS: the
 // login form, the PDS's own sign-in page, and its consent screen. Not a
 // mock — this is the actual redirect chain a browser goes through.
-export async function loginAs(page, handle, password) {
+export async function loginAs(
+  page: Page,
+  handle: string,
+  password: string,
+): Promise<void> {
   await page.goto("/");
   await page.fill('input[type="text"]', handle);
   await page.click("text=LOG IN WITH ATPROTO");
diff --git a/e2e/package-lock.json b/e2e/package-lock.json
index e02a9d3..27d61da 100644
--- a/e2e/package-lock.json
+++ b/e2e/package-lock.json
@@ -6,7 +6,9 @@
     "": {
       "name": "at-record-e2e",
       "devDependencies": {
-        "@playwright/test": "^1.48.0"
+        "@playwright/test": "^1.48.0",
+        "@types/node": "^26.1.1",
+        "typescript": "^5.6.0"
       }
     },
     "node_modules/@playwright/test": {
@@ -25,6 +27,16 @@
         "node": ">=18"
       }
     },
+    "node_modules/@types/node": {
+      "version": "26.1.1",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-26.1.1.tgz",
+      "integrity": "sha512-nxAkRSVkN1Y0JC1W8ky/fTfkGsMmcrRsbx+3XoZE+rMOX71kLYTV7fLXpqud1GpbpP5TuffXFqfX7fH2GgZREw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "undici-types": "~8.3.0"
+      }
+    },
     "node_modules/fsevents": {
       "version": "2.3.2",
       "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.2.tgz",
@@ -71,6 +83,27 @@
       "engines": {
         "node": ">=18"
       }
+    },
+    "node_modules/typescript": {
+      "version": "5.9.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
+      "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "bin": {
+        "tsc": "bin/tsc",
+        "tsserver": "bin/tsserver"
+      },
+      "engines": {
+        "node": ">=14.17"
+      }
+    },
+    "node_modules/undici-types": {
+      "version": "8.3.0",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-8.3.0.tgz",
+      "integrity": "sha512-j375ScV60dom+YkPFIfTLcOiPxkN/buHz5GobjLhixFuANaNs3C9l4GmrWqejgXWJ7BbJcFYpTEUkS1Ge8bpZQ==",
+      "dev": true,
+      "license": "MIT"
     }
   }
 }
diff --git a/e2e/package.json b/e2e/package.json
index 44ae38d..cc059d6 100644
--- a/e2e/package.json
+++ b/e2e/package.json
@@ -3,9 +3,12 @@
   "private": true,
   "type": "module",
   "scripts": {
-    "test": "playwright test"
+    "test": "playwright test",
+    "typecheck": "tsc --noEmit"
   },
   "devDependencies": {
-    "@playwright/test": "^1.48.0"
+    "@playwright/test": "^1.48.0",
+    "@types/node": "^26.1.1",
+    "typescript": "^5.6.0"
   }
 }
diff --git a/e2e/playwright.config.js b/e2e/playwright.config.ts
similarity index 100%
rename from e2e/playwright.config.js
rename to e2e/playwright.config.ts
diff --git a/e2e/tests/adoption.spec.js b/e2e/tests/adoption.spec.ts
similarity index 92%
rename from e2e/tests/adoption.spec.js
rename to e2e/tests/adoption.spec.ts
index 6849a49..a68d015 100644
--- a/e2e/tests/adoption.spec.js
+++ b/e2e/tests/adoption.spec.ts
@@ -1,9 +1,9 @@
-import { test, expect } from "@playwright/test";
+import { test, expect, type Page } from "@playwright/test";
 import { loginAs } from "../fixtures/login.js";
 
 const PASSWORD = process.env.TEST_ACCOUNT_PASSWORD || "e2e-test-password";
 
-async function addFirstSearchResult(page, query) {
+async function addFirstSearchResult(page: Page, query: string): Promise<void> {
   await page.goto("/add");
   await page.fill(".autocomplete input", query);
   await page.waitForSelector(".suggestions li", { timeout: 15_000 });
diff --git a/e2e/tsconfig.json b/e2e/tsconfig.json
new file mode 100644
index 0000000..503a254
--- /dev/null
+++ b/e2e/tsconfig.json
@@ -0,0 +1,12 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "ESNext",
+    "moduleResolution": "bundler",
+    "strict": true,
+    "noUncheckedIndexedAccess": true,
+    "skipLibCheck": true,
+    "types": ["@playwright/test", "node"]
+  },
+  "include": ["**/*.ts"]
+}