diff --git a/.github/workflows/node.js.yml b/.github/workflows/node.js.yml
index 832486c..25d67cb 100644
--- a/.github/workflows/node.js.yml
+++ b/.github/workflows/node.js.yml
@@ -26,6 +26,6 @@ jobs:
       with:
         node-version: ${{ matrix.node-version }}
     - run: npm install
-    - run: npm run build
+    - run: npm run build:umd
     - run: npm test
     - run: npm run lint
diff --git a/package.json b/package.json
index 8a22080..9524087 100644
--- a/package.json
+++ b/package.json
@@ -59,6 +59,7 @@
     "jest": "^26.4.2",
     "terser-webpack-plugin": "^5.1.1",
     "threads-plugin": "^1.4.0",
+    "typescript": "^4.1.3",
     "typescript-eslint": "^0.0.1-alpha.0",
     "webpack": "^5.11.1",
     "webpack-cli": "^4.3.1"