feat: switching from jest to vitest and adding "test:bench" and "test:coverage" scripts

.github/workflows/main.yml

@@ -14,6 +14,12 @@ jobs:
     build:
         runs-on: ubuntu-latest
 
+        permissions:
+            # Required to checkout the code
+            contents: read
+            # Required to put a comment into the pull-request
+            pull-requests: write
+
         steps:
             - uses: actions/checkout@v4
             - uses: actions/setup-node@v4
@@ -23,7 +29,8 @@ jobs:
 
             - run: npm ci
             - run: npm run build
-            - run: npm test
+            - run: npm run test:coverage
+            - uses: davelosert/vitest-coverage-report-action@v2
             - run: npm run lint
 
     publish:

CLAUDE.md

@@ -6,15 +6,17 @@
 npm run build        # Build ESM and CJS versions
 npm run lint         # Run ESLint
 npm test             # Run all tests
-npx jest path/to/file.test.ts  # Run specific test file
-npx jest -t "test name"        # Run tests matching pattern
+npm test:coverage    # Run coverage of all tests
+npm test:bench       # Run all benchmark tests
+npx vitest path/to/file.test.ts  # Run specific test file
+npx vitest -t "test name"        # Run tests matching pattern
 ```
 
 ## Code Style Guidelines
 
 - **TypeScript**: Strict type checking, ES modules, explicit return types
 - **Naming**: PascalCase for classes/types, camelCase for functions/variables
-- **Files**: Lowercase with hyphens, test files with `.test.ts` suffix
+- **Files**: Lowercase with hyphens, test files with `.test.ts` suffix, benchmark files with `.bench.ts` suffix
 - **Imports**: ES module style, include `.js` extension, group imports logically
 - **Error Handling**: Use TypeScript's strict mode, explicit error checking in tests
 - **Formatting**: 2-space indentation, semicolons required, single quotes preferred
@@ -25,4 +27,5 @@ npx jest -t "test name"        # Run tests matching pattern
 
 - `/src`: Source code with client, server, and shared modules
 - Tests alongside source files with `.test.ts` suffix
+- Benchmark tests alongside source files with `.bench.ts` suffix
 - Node.js >= 18 required

eslint.config.mjs

@@ -17,7 +17,7 @@ export default tseslint.config(
     },
     {
         files: ['src/client/**/*.ts', 'src/server/**/*.ts'],
-        ignores: ['**/*.test.ts'],
+        ignores: ['**/*.bench.ts', '**/*.test.ts'],
         rules: {
             'no-console': 'error'
         }