New Twiddle

controllers.application\.js

import Controller from '@ember/controller';

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

helpers.goto\.js

import Helper from '@ember/component/helper'
import { inject as service } from '@ember/service'
import { assert } from '@ember/debug'

export default Helper.extend({

    router: service(),

    compute(params, { queryParams }) {
        assert('goto requires at least route name as first parameter', params.length > 0)

        return () => {
            if ( queryParams ) {
                return this.router.transitionTo(...params, { queryParams })
            } else {
                return this.router.transitionTo(...params)
            }
        }
    }
})

router\.js

import EmberRouter from '@ember/routing/router';
import config from './config/environment';

const Router = EmberRouter.extend({
  location: 'none',
  rootURL: config.rootURL
});

Router.map(function() {
  this.route('my-route', { path: '/my-route/:id1/:id2' })
});

export default Router;

routes.my-route\.js

import Route from '@ember/routing/route';

export default Route.extend({
  queryParams: {
    a: {
      refreshModel: true
    }
  }
});

templates.application\.hbs

<button onclick={{goto 'my-route' 3 4  queryParams=(hash a='123')}}>
  My button
</button>

twiddle\.json

{
  "version": "0.17.0",
  "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/3.3.1/jquery.js",
    "ember": "3.17.0",
    "ember-template-compiler": "3.17.0",
    "ember-testing": "3.17.0"
  },
  "addons": {
    "@glimmer/component": "1.0.0",
    "ember-data": "3.11.5"
  }
}