JavaScript Type Testing Utility

The `is` library is a lightweight, comprehensive JavaScript utility designed for type and value testing. It provides a rich API to determine the type or specific characteristics of a variable, offering functions like `is.string()`, `is.array()`, `is.empty()`, `is.equal()`, and many more for common JavaScript types and states. Currently stable at version 3.3.2, the package maintains a steady but not rapid release cadence, primarily focusing on bug fixes and dependency updates. Its key differentiator is the extensive, declarative API that simplifies complex type checks, often replacing verbose `typeof` or `instanceof` chains, making code more readable and robust. It's widely used in both Node.js and browser environments for input validation, conditional logic, and defensive programming.