Version 4 - Alpha 1

Version 4 is a rewrite of the libraries using React hooks.

What's new in version 4:

• React rerender performance should be improved
• Full bundle size is around 25% smaller
• React devtools shows shallower tree which eases debugging

Most of the time upgrade to version 4 should go without changes to the code, but there are some breaking changes. If you are having problems with upgrade, be feed back via this issue

Breaking changes

• Requires React 16.8.6 or higher
• Requires Highcharts 7.2.0 or higher
• Drops support for immutable-js
• Props are now shallow compared instead of version 3's deep equal checks.
  • Be sure you are not placing new objects or arrays to props, otherwise the components will rerender needlessly
• Minimum supported version of IE is 11
  • IE needs to be polyfilled to at least ES2015 level, which you are probably already doing with core-js. If you are using create-react-app, please see https://github.com/facebook/create-react-app/tree/master/packages/react-app-polyfill#user-content-polyfilling-other-language-features

These should not affect many users:

• provide methods are replaced with hooks:
  • provideHighcharts --> useHighcharts
  • provideChart --> useChart
  • provideAxis --> useAxis
  • provideSeries --> useSeries
• Values in Contexts are changed from functions to objects

New features

• Caption component for setting chart caption

<Caption>
  This is a caption.
</Caption>

• Hooks for extending the library