chore: add GH Actions CI (#9101)

Author: SimenB

.github/workflows/nodejs.yml

@@ -9,6 +9,14 @@ on:
       - '**'
 
 jobs:
+  cleanup-runs:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: rokroskar/workflow-run-cleanup-action@master
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    if: "!startsWith(github.ref, 'refs/tags/') && github.ref != 'refs/heads/master'"
+
   lint-and-typecheck:
     name: Running TypeScript compiler & ESLint
     runs-on: ubuntu-latest
@@ -41,3 +49,35 @@ jobs:
         run: yarn lint:prettier:ci
       - name: check copyright headers
         run: yarn check-copyright-headers
+  test:
+    name: Node v${{ matrix.node-version }} on ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        # https://github.com/actions/setup-node/issues/27
+        node-version: [8.17.0, 10.x, 12.x, 13.x]
+        # Windows tests are failing for whatever reason, so just do linux and mac for now
+        os: [ubuntu-latest, macOS-latest]
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Get yarn cache
+        id: yarn-cache
+        run: echo "::set-output name=dir::$(yarn cache dir)"
+      - uses: actions/cache@v1
+        with:
+          path: ${{ steps.yarn-cache.outputs.dir }}
+          key: ${{ runner.os }}-node-${{ matrix.node-version }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-node-${{ matrix.node-version }}-yarn-
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+      - name: install
+        run: yarn install-no-ts-build
+      - name: run tests
+        run: yarn test-ci-partial
+        env:
+          CI: true