How is the function exported? Is it a default export or a named one?

The function is exported as a default export.

This is evident from both the implementation and type definitions:

• In [index.js:L1], the function is declared as export default function escapeStringRegexp(string) { ... }
• In [index.d.ts:L16], the TypeScript declaration also uses export default function escapeStringRegexp(string: string): string;

The usage example in [readme.md:L17] confirms this pattern: import escapeStringRegexp from 'escape-string-regexp'; — importing without curly braces, which is the syntax for default imports.

FOLLOW_UPS:

• What special characters does this function escape?
• How does the function handle the hyphen character differently?
• What are the test cases for this library?