CI: Test reusable actions

.github/actions/build.yml

@@ -0,0 +1,23 @@
+name: 'Build'
+
+runs:
+  runs-on: ubuntu-latest
+  steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    - name: Setup node
+      uses: actions/setup-node@v4
+      with:
+#         TODO: add version to a .nvmrc or at least a variable
+        node-version: 18.12.1
+        cache: npm
+    - name: Install
+      run: npm ci
+    - name: Build
+      run: npm run build
+    - name: Upload artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: lib-${{ github.sha }}
+        path: ./dist
+        if-no-files-found: error

.github/actions/tests.yml

@@ -0,0 +1,17 @@
+name: 'Run tests'
+
+runs:
+  runs-on: ubuntu-latest
+  steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    - name: Setup node
+      uses: actions/setup-node@v4
+      with:
+#         TODO: add version to a .nvmrc or at least a variable
+        node-version: 18.12.1
+        cache: npm
+    - name: Install
+      run: npm ci --prefer-offline
+    - name: Run tests
+      run: npm run test:unit

.github/workflows/CI.yml

@@ -0,0 +1,7 @@
+on: [push, workflow_dispatch]
+
+jobs:
+  run-tests:
+    uses: ./.github/actions/tests.yml
+  build:
+    uses: ./.github/actions/build.yml