Run typecheck on CI (#478)

package.json

@@ -12,7 +12,7 @@
     "@changesets/write": "^0.1.6",
     "@types/fs-extra": "^8.0.0",
     "@types/jest": "^29.5.1",
-    "@types/node": "^20.11.17",
+    "@types/node": "^22.15.17",
     "@types/semver": "^7.5.0",
     "@vercel/ncc": "^0.36.1",
     "babel-jest": "^29.5.0",
@@ -20,12 +20,13 @@
     "husky": "^3.0.3",
     "jest": "^29.5.0",
     "prettier": "^2.0.5",
-    "typescript": "^5.0.4"
+    "typescript": "^5.8.3"
   },
   "scripts": {
     "build": "ncc build src/index.ts -o dist --transpile-only --minify",
     "test": "jest",
     "test:watch": "yarn test --watch",
+    "typecheck": "tsc",
     "changeset": "changeset",
     "bump": "node ./scripts/bump.js",
     "release": "node ./scripts/release.js"
@@ -43,6 +44,7 @@
     "@manypkg/get-packages": "^1.1.3",
     "@octokit/core": "^5.2.1",
     "@octokit/plugin-throttling": "^8.0.0",
+    "@types/mdast": "^3.0.0",
     "fs-extra": "^8.1.0",
     "mdast-util-to-string": "^1.0.6",
     "remark-parse": "^7.0.1",