ember-filter

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Filter',
  query: null,
  techs: [
  	"angular", 
    "backbone",
    "bootstrap",
    "ember", 
    "glimmer", 
    "react",
    "svelte", 
    "vue",
  ],

  result: Ember.computed('query', function() {
    let q = this.get('query'),
        techs = this.get('techs');
    
    return q && q.length
      ? techs.filter(t => t.startsWith(q))
    	: techs;
  })
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
Search: <input onkeyup={{action (mut query) value="target.value"}}>
<ul>
{{#each result as |found| }}
<li>{{found}}</li>
{{/each}}
</ul>

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.1"
  }
}