Reduced Computed Woes

a-widget.component.js

import Ember from 'ember';

export default Ember.Component.extend({
  isShowing: false,
  actions: {
    toggle: function() {
      this.toggleProperty('isShowing');
    },
    emit: function() {
      this.sendAction('action');
    }
  }
});

a-widget.template.hbs

<button {{action "toggle"}}>Click One</button>
{{#if isShowing}}
  <button {{action "emit"}}>Click Two</button>
{{/if}}

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  blah: 1,
  
  stuff: function() {
    console.log('updating!');
    return 'a b c d e'.w();
  }.property('blah'),
  
  actions: {
    update: function() {
      this.incrementProperty('blah');
    }
  }
});

application.template.hbs

{{#each stuff as |hmm|}}
  <p>{{hmm}} {{a-widget action="update"}}</p>
{{/each}}

Total: {{blah}}

twiddle.json

{
  "version": "0.6.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "1.13.13",
    "ember-data": "1.13.15",
    "ember-template-compiler": "1.13.13"
  }
}