refactor: make code null safe and add tests

Author: sfxcode

package.json

@@ -91,37 +91,37 @@
     "@formkit/i18n": "^1.6.9",
     "@formkit/inputs": "^1.6.9",
     "@formkit/vue": "^1.6.9",
-    "@intlify/core": "^11.1.4",
+    "@intlify/core": "^11.1.5",
     "primeicons": "^7.0.0",
     "primevue": "^4.3.4",
     "uuid": "^11.1.0",
-    "vue-i18n": "^11.1.4"
+    "vue-i18n": "^11.1.5"
   },
   "devDependencies": {
     "@antfu/eslint-config": "^4.13.2",
     "@formkit/core": "^1.6.9",
     "@formkit/drag-and-drop": "^0.5.3",
     "@primeuix/themes": "^1.1.1",
-    "@types/node": "^22.15.21",
+    "@types/node": "^22.15.24",
     "@types/uuid": "^10.0.0",
     "@unocss/preset-icons": "66.1.2",
     "@unocss/preset-uno": "66.1.2",
     "@vitejs/plugin-vue": "^5.2.4",
     "@vitest/coverage-v8": "^3.1.4",
     "@vitest/ui": "^3.1.4",
-    "@vue/compiler-sfc": "^3.5.15",
-    "@vue/server-renderer": "^3.5.15",
+    "@vue/compiler-sfc": "^3.5.16",
+    "@vue/server-renderer": "^3.5.16",
     "@vue/test-utils": "^2.4.6",
     "@vue/tsconfig": "^0.7.0",
-    "@vueuse/core": "^13.2.0",
+    "@vueuse/core": "^13.3.0",
     "@vueuse/head": "^2.0.0",
     "changelogen": "^0.6.1",
     "chart.js": "^4.4.9",
     "consola": "^3.4.2",
     "cookie": "^1.0.2",
-    "esbuild": "^0.25.4",
+    "esbuild": "^0.25.5",
     "eslint": "^9.27.0",
-    "happy-dom": "^17.4.7",
+    "happy-dom": "^17.5.6",
     "json-editor-vue": "^0.18.1",
     "mkdist": "^2.3.0",
     "quill": "^2.0.3",
@@ -139,7 +139,7 @@
     "vite-ssg": "^27.0.1",
     "vitepress": "^1.6.3",
     "vitest": "^3.1.4",
-    "vue": "^3.5.15",
+    "vue": "^3.5.16",
     "vue-demi": "^0.14.10",
     "vue-router": "^4.5.1",
     "vue-tsc": "^2.2.10"