CSSM

components.s-button.js

import Ember from 'ember';

export default Ember.Component.extend({
  tagName: 'button',
  classNames: ['SuitButton', 'u-color-button', 'u-color-button-bg'],
  attributeBindings: ['disabled'],
  disabled: false,
});

controllers.application.js

import Ember from 'ember';

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

styles.app.css

body {
  margin: 12px 16px;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 12pt;
}

.u-color-button {
  color: white;
}
.u-color-button-bg {
  background-color: blue;
}
.u-color-button-disabled {
  color: black;
}
.u-color-button-disabled-bg {
  background-color: gray;
}

.SuitButton {
  padding: 0.5rem 1rem;
}
.SuitButton:hover {
  opacity: 0.8;
}

templates.application.hbs

<br>
<br>
{{outlet}}
<br>
<br>

templates.components.s-button.hbs

{{yield}}

templates.index.hbs

{{#s-button}}Default{{/s-button}}

{{#s-button disabled=true}}Disabled{{/s-button}}

twiddle.json

{
  "version": "0.15.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.4.3",
    "ember-template-compiler": "3.4.3",
    "ember-testing": "3.4.3"
  },
  "addons": {
    "ember-data": "3.4.2"
  }
}