Ember InteractJS Simple Div

controllers.application\.js

import Controller from '@ember/controller';
import { tracked } from '@glimmer/tracking';
import { action } from '@ember/object';
import interact from 'interactjs';

export default class ApplicationController extends Controller {
		// initialise grid properties
    dragCardPositionDelta;

    // methods
    @action
    addCardInteraction(element) {
        this.boardElement = element;

        // make elements with a class of draggable
        this.draggableCards = interact('.draggable-card');

        this.draggableCards.draggable({
            origin: 'self',
            inertia: false,
            modifiers: [
                interact.modifiers.restrict({
                  	restriction: 'self'
                })
            ],
            listeners: {
                start: this.dragStart,
                move: this.dragMove,
                end: this.dragEnd
            }
        });
    }

    @action
    dragStart(event) {
        // modify dom to support dragging the element
        event.target.style.position = 'relative';
        event.target.style.touchAction = 'none';
        event.target.style.userSelect = 'none';       
        event.target.style.left = '0px';
        event.target.style.top = '0px';

        console.log('dragStart (card: ' + event.target.id + ')' );

        this.dragCardPositionDelta = { dx: 0, dy: 0 };     
    };

    @action
    dragMove(event) {
        console.log('dragMove()');

        let dx = event.dx == null ? 0 : event.dx;
        let dy = event.dy == null ? 0 : event.dy;

        this.dragCardPositionDelta.dx += dx;
        this.dragCardPositionDelta.dy += dy;

        // debugger;
        event.target.style.transform =
            `translate(
                ${this.dragCardPositionDelta.dx}px,
                ${this.dragCardPositionDelta.dy}px
            )`;
    };   
    
    @action
    dragEnd(event, pointer) {
        console.log('dragEnd()');
        console.dir(arguments);        
    };
}

templates.application\.hbs

<div
    role="button"
    class="draggable-card bg-gray-200 w-20 h-20 shadow rounded-sm text-transparent hover:text-gray-300 cursor-move"
    style="width: 25%; min-height: 6.5em; margin: 1rem 0 0 1rem; background-color: #29e; color: white; border-radius: 0.75em; padding: 4%; touch-action: none; user-select: none;"
    {{did-insert this.addCardInteraction}}
/>

twiddle\.json

{
  "version": "0.17.1",
  "EmberENV": {
    "FEATURES": {},
    "_TEMPLATE_ONLY_GLIMMER_COMPONENTS": false,
    "_APPLICATION_TEMPLATE_WRAPPER": true,
    "_JQUERY_INTEGRATION": true
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.js",
    "ember": "3.18.1",
    "ember-template-compiler": "3.18.1",
    "ember-testing": "3.18.1",
    "@ember/render-modifiers": "^1.0.2",
    "interactjs": "^1.10.1",
  },
  "addons": {
    "@glimmer/component": "1.0.0"
  }
}