From 5514d461a1f921845611c81cce51a9b044560020 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=EB=A3=A8=EB=B0=80LuMir?= <rpfos@naver.com>
Date: Tue, 9 Dec 2025 16:39:28 +0900
Subject: [PATCH] ci: run `arethetypeswrong` in CI

---
 .github/workflows/ci.yml | 22 +++++++++++++++++-----
 package.json             |  2 ++
 2 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4c8362b6..7cb02856 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -73,6 +73,7 @@ jobs:
               run: npm install eslint@${{  matrix.eslint  }}
             - name: Test
               run: npm run test
+
     test_types:
         name: Test Types
         runs-on: ubuntu-latest
@@ -84,10 +85,23 @@ jobs:
                   node-version: "lts/*"
             - name: Install dependencies
               run: npm install
-            - name: Build
-              run: npm run build
             - name: Check Types
               run: npm run test:types
+
+    are-the-types-wrong:
+        name: Are the types wrong?
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v6
+            - name: Setup Node.js
+              uses: actions/setup-node@v6
+              with:
+                  node-version: "lts/*"
+            - name: Install Packages
+              run: npm install
+            - name: Check validity of type definitions
+              run: npm run lint:types
+
     jsr_test:
         name: Verify JSR Publish
         runs-on: ubuntu-latest
@@ -99,6 +113,4 @@ jobs:
             - name: Install Packages
               run: npm install
             - name: Run --dry-run
-              run: |
-                  npm run build
-                  npm run test:jsr
+              run: npm run test:jsr
diff --git a/package.json b/package.json
index f9d07da8..56104bdb 100644
--- a/package.json
+++ b/package.json
@@ -61,6 +61,7 @@
   "scripts": {
     "lint": "eslint && eslint -c eslint.config-content.js",
     "lint:fix": "eslint --fix && eslint --fix -c eslint.config-content.js",
+    "lint:types": "attw --pack --profile esm-only",
     "lint:unused": "knip",
     "fmt": "prettier --write .",
     "fmt:check": "prettier --check .",
@@ -74,6 +75,7 @@
     "test:types": "tsc -p tests/types/tsconfig.json"
   },
   "devDependencies": {
+    "@arethetypeswrong/cli": "^0.18.2",
     "@eslint/js": "^9.39.1",
     "@eslint/json": "^0.14.0",
     "@types/mdast": "^4.0.4",