Enhance "tests" workflow

Exercise more package scripts.

Author: wimpyprogrammer

.github/workflows/tests.yml

@@ -12,13 +12,16 @@ on:
 
 jobs:
   test:
+    name: Test
     runs-on: ubuntu-latest
 
     strategy:
+      fail-fast: false
       matrix:
         node-version: [10.x, 14.x]
 
     steps:
+      - name: Checkout repository
       - uses: actions/checkout@v2
         with:
           fetch-depth: '2'
@@ -29,6 +32,10 @@ jobs:
           node-version: ${{ matrix.node-version }}
       - run: npm install
       - run: npm run lint
+      - run: npm run lint-demo
+      - run: npm run build
+      - run: npm run build-demo
+      - run: npm run build-types
       - run: npm run test
 
       - name: Upload test coverage report to Codecov