Add vitest and fix memory leak

.eslintrc

@@ -35,5 +35,16 @@
     "import/export": 0,
     "n/no-callback-literal": 0,
     "@typescript-eslint/no-explicit-any": 0
-  }
+  },
+  "overrides": [
+    {
+      "files": ["src/__tests__/**"],
+      "rules": {
+        "import/first": 0,
+        "no-useless-return": 0,
+        "@typescript-eslint/no-non-null-assertion": 0,
+        "@typescript-eslint/no-non-null-asserted-optional-chain": 0
+      }
+    }
+  ]
 }

.github/workflows/ci.yml

@@ -0,0 +1,28 @@
+name: CI
+
+on:
+  pull_request:
+    branches:
+      - master
+      - beta
+
+concurrency:
+  group: ci-${{ github.workflow }}-${{ github.event.pull_request.number }}
+  cancel-in-progress: true
+
+jobs:
+  test:
+    name: Lint, unit, build
+    runs-on: ubuntu-24.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup node
+        uses: actions/setup-node@v4
+        with:
+          node-version: 24
+          cache: 'npm'
+      - name: Install dependencies
+        run: npm ci
+      - name: Test
+        run: npm run test

.github/workflows/publish.yaml

@@ -17,7 +17,7 @@ jobs:
       - name: Setup node
         uses: actions/setup-node@v1
         with:
-          node-version: 22
+          node-version: 24
       - name: Install dependencies
         run: npm ci
       - name: Build