diff --git a/package.json b/package.json
index a8fd7056eb..22bb7f5833 100644
--- a/package.json
+++ b/package.json
@@ -29,13 +29,14 @@
     "tsc": "tsc -p .",
     "doc": "node utils/doclint/cli.js",
     "test-infra": "node utils/doclint/check_public_api/test/test.js && node utils/doclint/preprocessor/test.js && node utils/testrunner/test/test.js",
-    "lint": "npm run eslint && npm run tsc && npm run doc && npm run test-infra",
+    "lint": "npm run eslint && npm run tsc && npm run doc && npm run test-types && npm run test-infra",
     "debug-test": "node --inspect-brk test/test.js",
     "clean": "rimraf lib && rimraf types",
     "prepare": "node install-from-github.js",
     "build": "node utils/runWebpack.js --mode='development' && tsc -p .",
     "watch": "node utils/runWebpack.js --mode='development' --watch --silent | tsc -w -p .",
     "version": "node utils/sync_package_versions.js && npm run doc",
+    "test-types": "npm run generate-types && npx -p typescript@3.2 tsc -p utils/generate_types/test/tsconfig.json",
     "generate-types": "node utils/generate_types/"
   },
   "author": {