fast-clone is a blazing fast and lightweight JavaScript library for deep cloning objects. Unlike other cloning solutions, it prioritizes speed, drastically reducing cloning time for complex data structures. It supports cloning primitives, arrays, objects, dates, regular expressions, and maintains circular reference integrity. Ideal for scenarios where performance is critical, fast-clone offers a simple and efficient way to create deep copies without impacting application responsiveness. It's a drop-in replacement for slower, more resource-intensive cloning methods.