What is the 'Disposable' pattern in TS 5.2+ (using 'using')?

Automates resource cleanup (like closing files or database connections) when a variable goes out of scope.

Based on the ECMAScript 'Explicit Resource Management' proposal, TS 5.2 introduced the using keyword. Objects that implement the Symbol.dispose method can be declared with using. When the block scope ends, the cleanup logic is automatically executed, even if an error occurred. This replaces the verbose and error-prone try...finally pattern for managing sensitive resources.