proxy-pattern

You can enforce validation on object property assignments by defining a Proxy with a set trap, allowing you to intercept assignments and apply validation logic without altering the target object directly.

A JavaScript Proxy intercepts property access and function calls through handler traps like get and set, regulating interactions with the target object by defining custom behavior for each operation.

The best way to add logging or access control to object interactions is using a Proxy pattern, where handler traps monitor property gets and sets to enforce auditing and control rules.

Yes, you can use Reflect within Proxy handler traps to safely delegate operations back to the target object, ensuring standard object behaviors are preserved while adding interception logic.

You should avoid using a Proxy when you need to modify the object's structure directly or when standard property descriptors suffice, as Proxy introduces interception overhead for dynamic behavior regulation.

To set up a Proxy handler for validation, create a target object and a handler object containing get and set traps, applying optional validation logic inside the set trap before assignment.