New Twiddle

components.my-component.js

import imageCropper from 'ember-cli-image-cropper/components/image-cropper';

export default imageCropper.extend({
  //override default options of cropper
  aspectRatio: 1,
  minCropBoxWidth: 100,
  minCropBoxHeight: 100,
  cropperContainer: '.cropper-container > img',
  previewClass: '.img-preview',
  croppedAvatar: null,
  checkCrossOrigin: false,
  actions: {
    getCroppedAvatar() {
      let cropper = this.get('cropper'),
          croppedImage = cropper.getCroppedCanvas();
      this.set('croppedAvatar', croppedImage);
    }
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
{{
	my-component
	image="https://www.suck.uk.com/binary_data/11885_sprout-product-on-white1.jpg"
}}
<br>
<br>

templates.components.my-component.hbs

<div class="cropper">
  <div class="cropper-container" style="width:400px;">
    <img src={{image}} width="400px">
  </div>
  <div class="preview">
    <div class="img-preview"></div>
    Preview
  </div>
  <div class="cropped">
    <div class="cropped-avatar">
      {{croppedAvatar}}
    </div>
    Cropped Avatar
  </div>
</div>

<button {{action "getCroppedAvatar"}}>Crop Avatar</button>

twiddle.json

{
  "version": "0.15.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.2.2",
    "ember-template-compiler": "3.2.2",
    "ember-testing": "3.2.2"
  },
  "addons": {
    "ember-data": "3.2.0",
    "ember-cli-image-cropper": "0.0.13"
  }
}