build in github actions.

.github/dependabot.yml

@@ -0,0 +1,13 @@
+# Keep GitHub Actions up to date with GitHub's Dependabot...
+# https://docs.github.com/en/code-security/dependabot/working-with-dependabot/keeping-your-actions-up-to-date-with-dependabot
+# https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file#package-ecosystem
+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: /
+    groups:
+      github-actions:
+        patterns:
+          - "*"  # Group all Actions updates into a single larger pull request
+    schedule:
+      interval: weekly

.github/workflows/configure.yml

@@ -0,0 +1,41 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  build_and_test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix: # macos-latest -> arm64, macos-13 -> x64
+        #os: [windows-latest, ubuntu-latest, macos-latest, macos-13]
+        #os: [macos-13, macos-latest]
+        os: [macos-latest]
+        # < 16 not available in testing images
+        #node-version: [22, 20, 18]
+        node-version: [22]
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: 3.9
+      - uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+      - name: install dependencies and test
+        shell: bash
+        run: |
+          npm install
+          npm test
+      - name: prebuild
+        shell: bash
+        run: |
+          npm run prebuild
+      - uses: actions/upload-artifact@v4
+        with:
+          name: PREBUILD-${{ matrix.os }}-${{ matrix.node-version }}
+          path: prebuilds/ # or path/to/artifact
+
+