THIS 4 year old Vue feature helps with nested components

Vue.js offers namespaced components, a 4-year-old feature that helps organize related components by grouping them under a single namespace. Instead of using long component names like 'FormInput' or 'DialogTitle', developers can create a namespace file that exports multiple components, allowing usage like 'Form.Input' or 'Dialog.Title'. This pattern makes component relationships more explicit and is particularly useful for design systems, tightly coupled component groups, and libraries like Radix UI. The feature improves code organization and makes it clearer which components belong together, though it's best suited for components that are always used in conjunction with each other.