The React add-ons are a collection of useful utility modules for building React apps. These should be considered experimental and tend to change more often than the core.
CSSTransitionGroup, for dealing with animations and transitions that are usually not simple to implement, such as before a component's removal.
LinkedStateMixin, to simplify the coordination between user's form input data and the component's state.
cloneWithProps, to make shallow copies of React components and change their props.
createFragment, to create a set of externally-keyed children.
PureRenderMixin, a performance booster under certain situations.
shallowCompare, a helper function that performs a shallow comparison for props and state in a component to decide if a component should update.
The add-ons below are in the development (unminified) version of React only:
TestUtils, simple helpers for writing test cases.
Perf, a performance profiling tool for finding optimization opportunities.
To get the add-ons, install them individually from npm (e.g.,
npm install react-addons-pure-render-mixin). We don't support using the addons if you're not using npm.