open-consul/ui/packages/consul-ui/app/components/code-editor/index.hbs

<IvyCodemirror @value={{value}} @name={{name}} @class={{class}} @options={{options}} @valueUpdated={{action onkeyup}} />
<pre><code>{{yield}}</code></pre>
{{#if (and (not readonly) (not syntax))}}
  <PowerSelect
      @onChange={{action "change"}}
      @selected={{mode}}
      @searchEnabled={{false}}
      @options={{modes}} as |mode|>
    {{mode.name}}
  </PowerSelect>
{{/if}}