multithreading: The missing standard library for multithreading in JavaScript (Works in Node.js, Deno, Bun, Web browser)

Multithreading.js brings Rust-inspired concurrency primitives to JavaScript, providing thread-pool architecture and memory safety through WebWorkers. It offers managed worker pools, shared memory primitives like Mutexes and Read-Write Locks, and channels for communication. The library abstracts WebWorker complexity, enabling multi-threaded code that feels like standard async JavaScript while maintaining strict memory safety.