Guid Generation

components.double-conditional-yield\.js

import Component from '@glimmer/component';
import { action, set } from '@ember/object';

export default class extends Component {
  showSecondYield = false;

  @action
  toggleSecondYield() {
    set(this, 'showSecondYield', !this.showSecondYield);
  }
}

components.double-yield\.js

import Component from '@glimmer/component';

export default class extends Component {
}

components.guid-for-two\.js

import Component from '@glimmer/component';
import { computed } from '@ember/object';
import { guidFor } from '@ember/object/internals';

export default class extends Component {
  @computed('args.input')
  get guid() {
    return guidFor(this.args.input);
  }
}

components.guid-for\.js

import Component from '@glimmer/component';
import { computed } from '@ember/object';
import { guidFor } from '@ember/object/internals';

export default class extends Component {
  @computed('args.input')
  get guid() {
    return guidFor(this.args.input);
  }
}

controllers.application\.js

import Controller from '@ember/controller';

export default class ApplicationController extends Controller {
  appName = 'Ember Twiddle';
}

templates.application\.hbs

<h1>Welcome to {{this.appName}}</h1>
<br>
<br>
<GuidFor @input='1234'/>
<GuidFor @input='1234'/>
<GuidFor @input=(hash foo='bar')/>
<DoubleYield as |guid|>
  <guid @input='1234'/>
</DoubleYield>
<DoubleYield as |guid|>
  <guid @input=(hash foo='bar')/>
</DoubleYield>
<DoubleConditionalYield as |guid|>
  <guid @input='1234'/>
</DoubleConditionalYield>
<DoubleConditionalYield as |guid|>
  <guid @input=(hash foo='bar')/>
</DoubleConditionalYield>
{{#let (hash foo='bar') as |foo|}}
  <GuidFor @input={{foo}}/>
  <GuidFor @input={{foo}}/>
  <DoubleYield as |guid|>
    <guid @input={{foo}}/>
  </DoubleYield>
  <DoubleConditionalYield as |guid|>
    <guid @input={{foo}}/>
  </DoubleConditionalYield>
{{/let}}
<br>
<br>

templates.components.double-conditional-yield\.hbs

Double Conditional Yield:
<button {{on 'click' this.toggleSecondYield}}>Toggle</button>
{{yield (component 'guid-for')}}
{{#if showSecondYield}}
	{{yield (component 'guid-for-two')}}
{{/if}}

templates.components.double-yield\.hbs

Double Yield:
{{yield (component 'guid-for')}}
{{yield (component 'guid-for-two')}}

templates.components.guid-for-two\.hbs

<p>GUID: {{this.guid}}</p>

templates.components.guid-for\.hbs

<p>GUID: {{this.guid}}</p>

twiddle\.json

{
  "version": "0.17.1",
  "EmberENV": {
    "FEATURES": {},
    "_TEMPLATE_ONLY_GLIMMER_COMPONENTS": false,
    "_APPLICATION_TEMPLATE_WRAPPER": true,
    "_JQUERY_INTEGRATION": true
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.js",
    "ember": "3.18.1",
    "ember-template-compiler": "3.18.1",
    "ember-testing": "3.18.1"
  },
  "addons": {
    "@glimmer/component": "1.0.0"
  }
}