Instruction: Explain the concept of Decorators and demonstrate their use in modifying a class property with an example.
Context: Although Decorators are mentioned in the initial list, this question dives deeper into their practical application, specifically in modifying class properties, to gauge the candidate's expertise in advanced TypeScript features.
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At its core, a Decorator is a special kind of declaration that can be attached to a class declaration, method, accessor, property, or parameter. Decorators use the form @expression, where expression must evaluate to a function that will be called at runtime with information about the decorated declaration.
To clarify, when we talk about modifying a class property using a Decorator, we're usually referring to extending or altering its behavior without changing the original class code. This is particularly useful for cross-cutting concerns like logging, performance monitoring, validation, or applying business logic rules....