Analyze and generate complete Jest test suite with strict TypeScript validation:

### Core Requirements:
1. **Type Safety**:
   - Use `Partial<T>` for test doubles when incomplete
   - Mark all intentional type deviations with `// @ts-expect-error: <reason>`
   - Add `@ts-ignore` only for unavoidable cases with explanation

2. **Test Structure**:
   ```typescript
   describe('ModuleName', () => {
     it('should...', () => {
       // Test logic
     });
     
     it.each([...])('should $when $input', ({input}) => { ... });
   });
   ```

3. **Automatic Detection**:
   - If file exports class → test methods
   - If file exports functions → test each function
   - If utils file → add parameterized tests

### Examples:
```typescript
// For partial mocks:
const mock: Partial<Interface> = {
  method: jest.fn() // @ts-expect-error: Mock missing return type
};

// For type validation:
const result = testFn();
expect(result).toBeDefined();
expectType<ExpectedType>(result);
```

### Output Rules:
1. 100% coverage of exported members
2. 3+ edge cases per logical branch
3. Complete jest.fn() mocks with types
4. Separate describe() blocks per logical unit