New Twiddle

components.amount-input.js

import Ember from 'ember';
import { computed } from '@ember/object';
import { createNumberMask } from 'ember-text-mask-addons';

const numberMask = createNumberMask({
  prefix: "$"
})

export default Ember.Component.extend({
  mask: numberMask,
  
  value: null,
  
  cleanValue: computed('value', function() {
    let value = this.get('value');
    if (value) {
	    return value.replace(/[^0-9]/g, '');
    } 
  })
});

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}}
<br>
<br>

{{amount-input}}

templates.components.amount-input.hbs

{{masked-input mask=mask value=value}}
value: {{cleanValue}}

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-text-mask": "6.1.2",
    "ember-text-mask-addons": "5.0.1"
  }
}