From d5d45f8a96ef381208a2b1504760c66fda23ac62 Mon Sep 17 00:00:00 2001
From: BlankParticle <blankparticle@gmail.com>
Date: Fri, 14 Aug 2026 17:52:38 +0530
Subject: [PATCH] fix: type error in early hints and add typecheck to CI

---
 .github/workflows/ci.yml       |  1 +
 benchmarks/fetch/tsconfig.json | 16 ++++++++++++++++
 package.json                   |  1 +
 src/early-hints.ts             |  2 +-
 4 files changed, 19 insertions(+), 1 deletion(-)
 create mode 100644 benchmarks/fetch/tsconfig.json

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bc48a9e6..1a0a765e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -28,6 +28,7 @@ jobs:
           run_install: true
       - run: pnpm run format
       - run: pnpm run lint
+      - run: pnpm run typecheck
       - run: pnpm run test
 
   ci-build:
diff --git a/benchmarks/fetch/tsconfig.json b/benchmarks/fetch/tsconfig.json
new file mode 100644
index 00000000..37e1c9c2
--- /dev/null
+++ b/benchmarks/fetch/tsconfig.json
@@ -0,0 +1,16 @@
+{
+  "compilerOptions": {
+    "target": "es2022",
+    "module": "ESNext",
+    "declaration": true,
+    "moduleResolution": "Bundler",
+    "esModuleInterop": true,
+    "forceConsistentCasingInFileNames": true,
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "types": ["node"],
+    "noEmit": true
+  },
+  "include": ["src/**/*", "scripts/**/*"]
+}
diff --git a/package.json b/package.json
index 1c4f269e..40fd9dca 100644
--- a/package.json
+++ b/package.json
@@ -86,6 +86,7 @@
     "postbuild": "publint",
     "prerelease": "pnpm run build && pnpm run test --run",
     "release": "np --no-publish",
+    "typecheck": "tsc --noEmit",
     "lint": "eslint src test",
     "lint:fix": "eslint src test --fix",
     "format": "prettier --check \"src/**/*.{js,ts}\" \"test/**/*.{js,ts}\"",
diff --git a/src/early-hints.ts b/src/early-hints.ts
index ecbf026e..9f416f55 100644
--- a/src/early-hints.ts
+++ b/src/early-hints.ts
@@ -27,7 +27,7 @@ export const earlyHints = <E extends Env = any>(
     }
 
     const env = c.env || {}
-    const bindings = (env.server ? env.server : env) as HttpBindings
+    const bindings = ('server' in env ? env.server : env) as HttpBindings
     const outgoing = bindings?.outgoing
 
     // Capability check: outgoing.writeEarlyHints exists and is a function.