JS error related to Drupal.behaviors

Problem/Motivation

The function defined in the Drupal behavior attach property (js/views_timelinejs.js) is executed more than once when the page containing the timeline is viewed as logged in administrator/editor (i.e., with the admin toolbar). This results in a console error:

DOMMixins.js:35 Uncaught NotFoundError: Failed to execute 'removeChild' on 'Node': The node to be removed is not a child of this node.
    at Rt.removeFrom (DOMMixins.js:35:19)
    at Xe._initLayout (Timeline.js:403:22)
    at Xe._onDataLoaded (Timeline.js:382:14)

as the 'removeChild' function is executed outside of the document context. Not sure, if only my environment is affected. The functionality of the timeline is not affected though, so the proposed fix below might be merely cosmetic.

Steps to reproduce

• Drupal core 10.4.6
• drupal/views_timelinejs 4.1.1
• Timeline.js 3.8.18, locally served
• Timeline view has been set up as a page

Proposed resolution

Wrapping the content of the attach function (js/views_timelinejs.js) with

if (context === document) {
	for (const key in settings.TimelineJS) {
	...
	}
}

seems to fix the JS error.