add GitHub Actions

.github/workflows/ci.yml

@@ -0,0 +1,56 @@
+name: CI
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    paths:
+      - "**.js"
+      - "package.json"
+      - ".github/workflows/ci.yml"
+
+jobs:
+  test:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macOS-latest]
+        node: ["14", "12", engines]
+        exclude:
+          # On Windows, run tests with only the LTS environments.
+          - os: windows-latest
+            node: engines
+          - os: windows-latest
+            node: "14"
+          # On macOS, run tests with only the LTS environments.
+          - os: macOS-latest
+            node: engines
+          - os: macOS-latest
+            node: "14"
+
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Get Node.JS version from package.json
+        if: matrix.node == 'engines'
+        id: get-version
+        run: echo ::set-output name=node::$(npx --q minimum-node-version)
+
+      - uses: actions/setup-node@v2-beta
+        if: matrix.node != 'engines'
+        with:
+          node-version: ${{ matrix.node }}
+
+      - uses: actions/setup-node@v2-beta
+        if: matrix.node == 'engines'
+        with:
+          node-version: ${{steps.get-version.outputs.node}}
+
+      - run: npm install
+
+      - run: npm run report -- --colors
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v1
+        with:
+          file: ./coverage/coverage-final.json

.github/workflows/lint.yml

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+name: CI
+
+on:
+  pull_request:
+    paths:
+      - "**.js"
+      - "**eslint**"
+      - "package.json"
+      - ".github/workflows/lint.yml"
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js
+        uses: actions/setup-node@v2-beta
+        with:
+          node-version: 14
+      - run: npm install
+      - run: npm run lint