Why isn’t the express-validator `.escape()` method working as expected?

I'm using the express-validator middleware to sanitize input, but I'm having trouble with the `query.escape()` method. I followed the getting started tutorial from their site, which shows how to use it. Here's a piece of code I implemented:

```javascript
const express = require('express');
const { query, validationResult } = require('express-validator');
const app = express();

app.use(express.json());
app.get('/hello', query('person').notEmpty().escape(), (req, res) => {
const result = validationResult(req);
if (result.isEmpty()) {
return res.send(`Hello, ${req.query.person}!`);
}
res.send({ errors: result.array() });
});

app.listen(3000);
```

However, when I make a request to `http://localhost:3000/hello?person=John`, it still logs "Hello, John!" with "John" bolded, which is not the expected outcome. I've also tested with different scripts, and they execute as well. Can someone help me understand what's going wrong? Is there something incorrect in the express-validator documentation? You can look at the tutorial [here](https://express-validator.github.io/docs/guides/getting-started#sanitizing-inputs) for context.