x-is-string Type Check Utility

The `x-is-string` package offers a singular, lightweight utility function designed to determine if a given JavaScript value is a string, encompassing both primitive string literals and `String` objects (e.g., `new String("value")`). Currently at version 0.1.0, the package was last published over 12 years ago and has received no updates or new releases since its inception. Despite its dormant status, it maintains a considerable number of weekly downloads, often due to its inclusion as a deep, indirect dependency in older projects. Its core appeal lies in its extremely minimal footprint and zero external dependencies, providing a direct, unopinionated string check. This contrasts with more actively maintained and feature-rich alternatives, which might include additional logic for cross-realm string detection or more robust type narrowing. Primarily targeting CommonJS environments given its age, `x-is-string` does not include explicit ECMAScript Module (ESM) export definitions in its `package.json`, relying instead on Node.js's backward compatibility for ESM interoperability.