Text Ellipsis inside Parens

controllers.application.js

import Ember from 'ember';

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

styles.app.css

.container {
  display: flex;
  resize: horizontal;
  overflow:auto;
  width: 140px;
  height: 25px;
  background-color: lightgray;
}

.left, .center, .right {
  min-width: 0;
  display: inline-flex;
}

.left, .right {
  flex: 0 0 auto;
}

.center {
  flex: 0 1 auto;
}

.center .center__content {
  overflow: hidden;
	white-space: nowrap;
  text-overflow: ellipsis;
}

templates.application.hbs

<div class="container">
  <span class="left">
  	Before Paren (
  </span>
  <span class="center">
  	<span class="center__content">
    	WWWWWWWWWWWW
    </span>
  </span>
  <span class="right">)</span>
</div>

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"
  }
}