Run CI on GitHub Actions

.github/workflows/continuous-integration.yml

@@ -0,0 +1,40 @@
+name: CI
+
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  frontend-tests:
+    name: "Tests: Frontend"
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node: [ '12', '13', '14' ]
+    steps:
+
+      - uses: actions/checkout@v2
+
+      - uses: actions/cache@v2
+        with:
+          path: ~/.npm
+          key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-node-
+
+      - name: Setup node
+        uses: actions/setup-node@v2
+        with:
+          node-version: ${{ matrix.node }}
+
+      - run: npm ci
+
+      - run: npm run coverage
+
+      - run: cat ./coverage/lcov.info | npx coveralls .
+        env:
+          COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          COVERALLS_SERVICE_NAME: github
+          COVERALLS_SERVICE_NUMBER: ${{ github.run_id }}
+          CI_PULL_REQUEST: ${{ github.event.number }}