fix: resolve TypeErrors, security issues, and add CI

- Fix cleandns-inc#16: handle non-iterable entities with toArray() utility
- Fix cleandns-inc#12: add Array.isArray() check before vcardArray[1].find()
- Fix cleandns-inc#13: replace console.warn with debug module
- Fix findTimestamps anti-pattern using proper loop with break
- Fix ReDoS vulnerability by escaping regex in registrar name matching
- Fix null pointer in ip.ts port43.match() access
- Add null safety to findInObject recursive function
- Add domain input validation
- Add comprehensive test suite (43 tests)
- Add GitHub Actions workflow for CI on Node 18/20/22
- Add test script to package.json

Author: titanism

.github/workflows/test.yml

@@ -0,0 +1,38 @@
+name: Test
+
+on:
+  push:
+    branches: [main, master]
+  pull_request:
+    branches: [main, master]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [18, 20, 22]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 9
+
+      - name: Setup Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: pnpm
+
+      - name: Install dependencies
+        run: pnpm install
+
+      - name: Build
+        run: pnpm run build
+
+      - name: Run tests
+        run: pnpm test

.gitignore

@@ -1,3 +1,4 @@
 dist/
 node_modules/
 .vscode
+.DS_Store