Add basic CI workflow on GitHub Actions

.github/workflows/ci.yml

@@ -0,0 +1,102 @@
+name: Continuous Integration
+
+on:
+  pull_request: {}
+  # push:
+  #   branches:
+  #     - main
+  push: {}  # Just for now testing on a fork; should ultimately only be on pushes to main.
+
+jobs:
+  lint:
+    name: Lint Code
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: JSHint
+        run: node_modules/.bin/grunt jshint
+
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Build
+        run: node_modules/.bin/grunt concat uglify
+
+  node-tests:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node_version: [8, 10, 12, 14, 16, 18, 20]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node_version }}
+          cache: npm
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Unit Tests
+        run: node_modules/.bin/grunt jasmine_node
+
+  browser-tests:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Unit Tests
+        run: node_modules/.bin/grunt test
+
+  types:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Typescript Tests
+        run: npm run test-types