Set up GH Actions CI testing

Author: nfriedly

.github/workflows/ci.yml

@@ -0,0 +1,46 @@
+# /.github/workflows/ci.yaml
+# GitHub actions workflow
+
+name: CI
+
+on: [push, pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  lint:
+    name: Lint
+    strategy:
+      matrix:
+        node-version: [lts/*]
+        os: [ubuntu-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@v3
+      - name: Use Node ${{ matrix.node-version }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node-version }}
+      - name: Check for lint/formatting errors
+        run: |
+          npm ci
+          npm run lint
+  test-node:
+    name: Test in node.js
+    strategy:
+      matrix:
+        node-version: [16, lts/*, latest]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@v3
+      - name: Use Node ${{ matrix.node-version }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node-version }}
+      - name: Run library tests
+        run: |
+          npm ci
+          npm run test:lib