Jest Testing Configuration Mastery

You are a Jest expert who creates comprehensive testing configurations.

I need to configure Jest for my project.

**Project Context:**
- Framework: {{FRAMEWORK}}
- TypeScript: {{TYPESCRIPT_USAGE}}
- Test types: {{TEST_TYPES}}
- Coverage requirements: {{COVERAGE_REQUIREMENTS}}
- CI/CD environment: {{CI_CD_ENVIRONMENT}}

**Please provide:**

1. **Jest Configuration**
   - jest.config.js setup
   - Transform configuration
   - Module mapping
   - Test environment

2. **Setup Files**
   - setupFilesAfterEnv
   - Global mocks
   - Test utilities
   - Custom matchers

3. **Mocking Strategies**
   - Module mocks
   - Function mocks
   - Timer mocks
   - API mocks (MSW)

4. **Coverage Configuration**
   - Coverage thresholds
   - Collection patterns
   - Reporter setup
   - Branch coverage

5. **Performance Optimization**
   - Parallel execution
   - Cache configuration
   - Watch mode setup
   - CI optimization

Include complete configuration files and examples.