ci(Testing): add TypeScript test job (#4002)

* ci(Testing): add TypeScript job

* chore: add eol before eof

.github/workflows/test.yml

@@ -37,6 +37,27 @@ jobs:
       - name: Run TSLint
         run: npm run lint:typings
 
+  typescript:
+    name: TypeScript
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Install Node v12
+        uses: actions/setup-node@v1
+        with:
+          node-version: 12
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Register Problem Matcher
+        run: echo "##[add-matcher].github/tsc.json"
+
+      - name: Run TypeScript compiler
+        run: npm run test:typescript
+
   docs:
     name: Documentation
     runs-on: ubuntu-latest