useadditional

Useadditional, often stylized useadditional, is a software design concept that describes a mechanism for providing supplementary data or behavior to a core unit such as a component, function, or module. It is not a formal standard but appears in documentation and codebases as a descriptive name for extending a base interface with optional extras. The purpose is to separate core functionality from optional capabilities, enabling modularity and configurability.

Common contexts include user interface components that accept base props and can augment them with extra properties, data loaders that fetch supplementary resources, or hooks and utilities that assemble composite configurations from a base set and an extension set.

Implementation patterns include merging base and extra inputs, often via a shallow merge, or through a small hook that returns a combined object. Example in JavaScript: function useadditional(baseProps, extraProps) { return { ...baseProps, ...extraProps }; } In a React-like setting this allows components to opt in to new features by supplying extraProps without altering the core API.

Limitations include risks of property name collisions, ambiguity about which side supplies which properties, and potential coupling between core and extended behavior. Good practice includes documenting which fields are optional, using explicit interfaces, and avoiding excessive propagation of extras.

See also: prop spreading, composition, higher-order components, hooks.