feat(ci): add coverage configuration

package.json

@@ -10,6 +10,7 @@
     "preview": "vite preview",
     "test": "vitest",
     "test:run": "vitest run",
+    "test:coverage": "vitest run --coverage",
     "test:integration": "vitest run tests/integration",
     "test:regression": "vitest run tests/regression --update",
     "test:e2e": "playwright test",

vitest.config.js

@@ -0,0 +1,31 @@
+import { defineConfig } from 'vitest/config'
+import react from '@vitejs/plugin-react'
+
+export default defineConfig({
+  plugins: [react()],
+  test: {
+    environment: 'jsdom',
+    globals: true,
+    setupFiles: ['./src/test/setup.js'],
+    include: ['src/**/*.{test,spec}.{js,jsx}', 'tests/**/*.{test,spec}.js'],
+    exclude: ['tests/e2e/**', 'tests/performance/**', 'tests/regression/visual.test.js', 'node_modules/**'],
+    snapshotFormat: {
+      escapeString: true,
+      printBasicPrototype: false,
+    },
+    coverage: {
+      provider: 'v8',
+      reporter: ['text', 'lcov', 'html'],
+      exclude: [
+        'node_modules/',
+        'tests/',
+        '**/*.test.js',
+        '**/*.config.js'
+      ],
+      lines: 80,
+      functions: 80,
+      branches: 80,
+      statements: 80
+    },
+  },
+})