ci: add typescript check to workflow

Author: masonlet

.github/workflows/tests.yml

@@ -22,5 +22,8 @@ jobs:
       - name: Install dependencies
         run: npm install
 
+      - name: Type check
+        run: npm run typecheck
+
       - name: Run tests
-        run: npm test
+        run: npm test

package.json

@@ -6,7 +6,8 @@
   "scripts": {
     "test": "vitest",
     "test:watch": "vitest --watch",
-    "test:coverage": "vitest --coverage"
+    "test:coverage": "vitest --coverage",
+    "typecheck": "tsc --noEmit"
   },
   "author": "Mason L'Etoile",
   "license": "MIT",