charts-8.x-4.x-dev/modules/charts_c3/js/charts_c3.js

/**
 * @file
 * JavaScript's integration between C3 and Drupal.
 */

/* global c3 */
(function (Drupal, once) {
  Drupal.behaviors.chartsC3 = {
    attach(context) {
      const contents = new Drupal.Charts.Contents();
      once('charts-c3', '.charts-c3', context).forEach(function (element) {
        const config = contents.getData(element.id);
        c3.generate(config);
        if (
          element.nextElementSibling &&
          element.nextElementSibling.hasAttribute('data-charts-debug-container')
        ) {
          element.nextElementSibling.querySelector('code').innerText =
            JSON.stringify(config, null, ' ');
        }
      });
    },
  };
})(Drupal, once);