In LWC, what decorator is used to expose properties and methods to other components?

In Lightning Web Components (LWC), the decorator used to expose properties and methods to other components is @api. This decorator allows properties and methods to be accessible from outside the component, meaning they can be called or assigned values by parent components or other components that import the component exposing these APIs.

When a property is marked with @api, it indicates that the property is public, and other components can modify its value. Similarly, methods decorated with @api can be invoked by external components, enabling inter-component communication and functionality sharing.

This is essential for building reusable components since it allows for interaction in a controlled manner, promoting encapsulation while still offering flexibility.

The other decorators serve different purposes: @track is used for tracking reactive properties within a component, facilitating automatic updates to the UI when the property value changes, while @wire is used for wiring data to a property or function from an Apex method or other data sources. @static is not a valid LWC decorator and does not have a relevant role in this context.