Matt Smith

JavaScript now supports explicit resource management through the `using` keyword and disposal symbols (`Symbol.dispose`, `Symbol.asyncDispose`). This language-level feature automatically cleans up resources like files, streams, locks, and database connections when they go out of scope, eliminating the need for verbose `try/finally` blocks. Resources are disposed in reverse order of declaration, similar to a stack. For more complex scenarios, `DisposableStack` and `AsyncDisposableStack` provide programmatic control. The feature is available in Chrome 123+, Firefox 119+, and Node.js 20.9+, with Safari support pending.