JavaScript Runtimes Explained

Luca highlights the differences between Deno and Node, emphasizing Deno's strict sandboxing compared to Node's more permissive approach. The discussion also touches on various JavaScript runtimes, including embedded engines like Hermes for React Native. Jeremy adds that while V8 executes pure functions, it relies on external runtimes for I/O operations, showcasing the complexity and versatility of JavaScript environments.