console.log(books) //Print out the array

<h4>Filter out a number from a string</h4>
```javascript
const odrabiamy = require('odrabiamy-pl')
let example_string = "exercise 17"
let number_string = await odrabiamy.SanitizeString(example_string)

console.log(`Sanitized string: ${number_string}`) //Print out the filtered variable

Example below will return an array of books without using await/async