How does this function validate its input — does it throw on bad arguments?

Question

RepoPilot · Accepted Answer

Yes, the function validates its input and throws on bad arguments. Looking at [index.js:L1-L4], the function includes a type check:

```javascript
export default function escapeStringRegexp(string) {
	if (typeof string !== 'string') {
		throw new TypeError('Expected a string');
	}
```

If the argument is not a string, it throws a `TypeError` with the message "Expected a string". This ensures the function only accepts string inputs and fails fast with a clear error if called with other types like numbers, objects, or null.

FOLLOW_UPS:
- What characters does the function escape?
- How are hyphens handled differently than other characters?
- What are the test cases for this function?