Highcharts Gantt v12.0.0

• When importing Highcharts as a node module, additional modules no longer require initialization. Previously modules would be first imported, then initialized:

// Imports for Highcharts v11
import * as Highcharts from 'highcharts';
import addAccessibility from 'highcharts/modules/accessibility';

addAccessibility(Highcharts); // <== This no longer works!

Since v12, the module will not return a factory function, so above code will cause an error. Instead, import it like this:

// Imports for Highcharts v12
import * as Highcharts from 'highcharts';
import 'highcharts/modules/accessibility';

See the elaborate article in the docs.

• All date and time strings are now by default rendered in the web page’s default language as set in the html.lang attribute, or falls back to the browser default. Setting lang.locale to en-GB will restore the labels approximately as they were prior to v12. For exact backwards compatibility, set all the time format options (xAxis.dateTimeLabelFormats, tooltip.dateTimeLabelFormats etc) back to their v11 defaults in addition.
• The time.getTimezoneOffset function callback no longer works. Instead, use the timezone option.
• All time-related options in the global group were removed. Use the time options instead.
• The data handling of the Series class has been rewritten to use the DataTable class directly. As a consequence, the parallel arrays storing the series data are removed, and replaced by Series.getColumn().
  • Series.xData is replaced by Series.getColumn('x')
  • Series.yData is replaced by Series.getColumn('y')
  • Series.processedXData is replaced by Series.getColumn('x', true)
  • Series.processedYData is replaced by Series.getColumn('y', true)
• The “Download PDF” menu item was removed from the default exporting menu, in preparation for a future update where exporting is done on the client side by default. The future update will require PDF download to either run via the export server like before, or to load a third party script. To re-enable the PDF download in the menu, add downloadPDF in the contextButton.menuItems.
• The HighchartModuleLoaded window event is no longer supported as we moved to webpack builds with tree shaking capabilites. Instead, extensions must rely on events and wrapped methods.
• The title.widthAdjust option is removed. Instead, use contextButton.buttonSpacing to make space for non-default context button.
• Titles and subtitles now have adaptive alignment. To revert to the pre-v12 defaults, set title.align and subtitle.align to center, and title.minScale to 1.
• The Point instances are now used as context for tooltip and data label formatters and format strings, instead of an abstract context object. In most cases this will cause no changes as the properties of the context object are now moved to the Point itself, but some changes may occur. Specifically the {point.x} key for points on a category axes will no longer return the category name. Instead, use {category}.