Use shards to parallelize test runs

Author: pichfl

.github/workflows/ci.yml

@@ -24,12 +24,21 @@ jobs:
   test:
     name: Test
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        shardIndex: [1, 2, 3]
+        shardTotal: [3]
     steps:
       - uses: actions/checkout@v4
-      - uses: pnpm/action-setup@v4
       - uses: actions/setup-node@v4
         with:
           node-version: 18
-          cache: pnpm
-      - run: pnpm install --frozen-lockfile
-      - run: pnpm test
+
+      - name: Install pnpm
+        uses: pnpm/action-setup@v4
+
+      - name: Install dependencies
+        run: pnpm i
+
+      - name: Run tests
+        run: pnpm run test --shard=${{ matrix.shardIndex }}/${{ matrix.shardTotal }}