React LinkedStateMixin

A legacy React addon providing LinkedStateMixin for two-way binding in React forms, allowing components to easily sync state with input values. Current stable version is 15.6.2, but it is no longer maintained and deprecated in favor of explicit value/onChange patterns. For React 16+, separate react-linked-input package is required. It uses mixins, which are incompatible with ES6 classes and modern React. Alternatives include controlled components with useState.