swap to pnpm and turn on github actions

Author: mansona

.github/workflows/ci.yml

@@ -0,0 +1,32 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+      - master
+  pull_request: {}
+
+concurrency:
+  group: ci-${{ github.head_ref || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  test:
+    name: Test
+    runs-on: ${{ matrix.os }}
+    continue-on-error: true
+    strategy:
+      matrix:
+        os: [ ubuntu-latest, windows-latest, macos-latest ]
+        node_version: ['20', '22', '24']
+
+    steps:
+    - uses: actions/checkout@v6
+    - uses: pnpm/action-setup@v4
+    - uses: actions/setup-node@v6
+      with:
+        node-version: ${{ matrix.node_version }}
+    - run: pnpm install
+    - run: npm install -g cross-env
+    - run: pnpm test

.travis.yml

@@ -22,6 +22,7 @@
     "broccoli-plugin",
     "javascript"
   ],
+  "packageManager": "pnpm@10.25.0",
   "dependencies": {
     "broccoli-kitchen-sink-helpers": "^0.3.1",
     "broccoli-plugin": "^1.2.1",