chore: bootstrap vitest + vue-test-utils

notes.web had no test setup at all. Vitest requires Vite >=5, so bump
vite 4->6 and @vitejs/plugin-vue 4->5; vue-tsc stays at 1.8.8 since
3.x surfaces unrelated pre-existing errors in @codexteam/ui.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

Author: 2 people

package.json

@@ -12,7 +12,10 @@
     "lint": "eslint",
     "lint:fix": "yarn lint --fix",
     "watch-ts": "vue-tsc --noEmit --watch",
-    "format": "prettier --write --cache ."
+    "format": "prettier --write --cache .",
+    "test": "vitest run",
+    "test:dev": "vitest",
+    "coverage": "vitest run --coverage"
   },
   "private": true,
   "workspaces": [
@@ -38,16 +41,19 @@
   "devDependencies": {
     "@eslint/eslintrc": "^3.1.0",
     "@eslint/js": "^9.3.0",
-    "@hawk.so/vite-plugin": "^1.0.2",
+    "@hawk.so/vite-plugin": "^1.0.6",
     "@types/node": "^20.10.7",
-    "@vitejs/plugin-vue": "^4.1.0",
+    "@vitejs/plugin-vue": "^5.2.4",
+    "@vitest/coverage-v8": "^4.1.10",
+    "@vue/test-utils": "^2.4.11",
     "eslint": "^9.3.0",
     "eslint-config-codex": "^2.0.0",
     "eslint-config-prettier": "^9.1.0",
     "eslint-import-resolver-typescript": "^3.5.5",
     "eslint-plugin-boundaries": "^3.1.1",
     "eslint-plugin-prettier-vue": "^5.0.0",
     "eslint-plugin-vue": "^9.15.1",
+    "happy-dom": "^20.11.1",
     "postcss": "^8.4.26",
     "postcss-apply": "^0.12.0",
     "postcss-hover-media-feature": "^1.0.2",
@@ -56,7 +62,8 @@
     "prettier": "3.2.5",
     "typescript": "^5.4.5",
     "typescript-eslint": "^7.9.0",
-    "vite": "^4.4.9",
+    "vite": "^6.4.3",
+    "vitest": "^4.1.10",
     "vue-eslint-parser": "9.4.2",
     "vue-tsc": "^1.8.8"
   },

tsconfig.eslint.json

@@ -4,6 +4,7 @@
     "src/**/*.ts",
     "src/**/*.vue",
     "vite.config.ts",
+    "vitest.config.ts",
     "eslint.config.mjs",
     "postcss.config.js",
   ],

tsconfig.json

@@ -8,7 +8,7 @@
     "module": "ESNext",
     "lib": ["ES2020", "DOM", "DOM.Iterable"],
     "skipLibCheck": true,
-    "moduleResolution": "node",
+    "moduleResolution": "bundler",
     "allowImportingTsExtensions": true,
     "resolveJsonModule": true,
     "isolatedModules": true,

vitest.config.ts

@@ -0,0 +1,20 @@
+import { defineConfig } from 'vitest/config';
+import vue from '@vitejs/plugin-vue';
+import { fileURLToPath } from 'node:url';
+
+export default defineConfig({
+  plugins: [vue()],
+  test: {
+    environment: 'happy-dom',
+    coverage: {
+      reporter: ['text', 'json-summary', 'json'],
+      reportOnFailure: true,
+    },
+  },
+  resolve: {
+    alias: {
+      /* eslint-disable-next-line @typescript-eslint/naming-convention */
+      '@/': fileURLToPath(new URL('./src/', import.meta.url)),
+    },
+  },
+});