chore: attempted advice from #3 (comment).

Author: Blankeos

.github/workflows/build.yml

@@ -0,0 +1,37 @@
+name: Build
+
+on:
+  push:
+    branches: [ main, rolldown ]
+  pull_request:
+    branches: [ main, rolldown ]
+
+jobs:
+  build:
+    name: Build on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+    
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Set up Bun
+      uses: oven-sh/setup-bun@v2
+      with:
+        bun-version: latest
+
+    - name: Install dependencies
+      run: bun install
+
+    - name: Run build
+      run: bun run build
+
+    - name: Upload build artifacts
+      if: success()
+      uses: actions/upload-artifact@v4
+      with:
+        name: build-artifacts-${{ matrix.os }}
+        path: dist/