I am using Highcharts-7.x-2.x-dev to display line graphs and bar graphs on my site.

Now I would like to add an 'arearange' graph, like this (highcharts demo) or preferably with a line graph, like this (jsfiddle).

When I set my series type to 'areagraph', Javascript crashes and the graph is not displayed. I've tracked down the problem that the areagraph type requires highcharts-more.js (ref How to create area range with line highchart). This file is included in the Highcharts library but it doesn't seem to be loaded by the Highcharts Drupal module.

I've tried doing a simple drupal_add_js('path/to/libraries/highcharts/js/highcharts-more.js'), but that isn't solving the problem.

I also noticed the Highcharts Drupal module isn't loading the highcharts.js with drupal_add_js(), but rather in a hook_library(). Would I need to add highcharts-more.js that way? Has anyone else got arearange graphs to work in Drupal?