
## Input

```javascript
// @skip
// Unsupported input

// Valid -- this is a regression test.
jest.useFakeTimers();
beforeEach(() => {
  jest.useRealTimers();
});

```

## Code

```javascript
// @skip
// Unsupported input

// Valid -- this is a regression test.
jest.useFakeTimers();
beforeEach(() => {
  jest.useRealTimers();
});

```
      