- Introduce React.PureComponent as a new base class and add numerous developer warnings (props.children modification, undefined mixins, PropTypes misuse, Maps as children, etc.).
- Expand supported attributes (SVG xmlns/xmlnsXlink, HTML referrerPolicy) and fix several bugs (ref resolution order, nested server rendering, range input rounding, excessive perf warnings, TestUtils crash).
- Release the react-test-renderer package for focused testing and enhance TestUtils with event type property support.
Community impact
Community ratings: 0 Useful, 0 Noise, 0 Risky, 0 Broke, 0 Try.